Terms of Use

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1. Scope and acceptance

These terms are the agreement that applies between you and DRN if you use UDF360 or the drnportal.com member area. You can use the app without an account to view documents; when you open an account, you declare that you have read and accept these terms by checking a box. The terms version you accepted and the time of acceptance are recorded on your account. When the terms are updated, you cannot continue with signing, identity and purchase actions on your account without accepting the new version; if you do not accept, you can delete your account.

How your personal data is processed is not part of this agreement; it is covered by a separate notice: Privacy Policy and Privacy Notice. No approval is requested for the privacy notice; operations that require explicit consent are asked about separately, on separate screens.

UDF360 lets you open, create, edit, save and share UDF documents, sign them with your mobile signature or your e-signature card, and verify the signature in a signed document. The drnportal.com member area lets you manage your profile, verify your phone and email, see your entitlement status and your invoices, and delete your account.

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2. An independent product

UDF360 is not affiliated with UYAP or with the T.C. Adalet Bakanlığı (Ministry of Justice of the Republic of Türkiye); it has not been developed, supported or approved by them. UYAP is a brand and system belonging to the Ministry of Justice.

Your UYAP username or password is never requested; the app does not access your UYAP account. An app that asks you for your UYAP password is not UDF360.

Uploading a signed document to UYAP is outside the scope of the app. You do the upload yourself from your own browser; problems that may occur during the upload, and consequences such as missed deadlines and rejection, are not our responsibility.

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3. Account

• Age: You must have reached the age of 18 to open an account.
• Single account: Each natural person can open one account. A Turkish ID number can be verified on only one account with an e-signature certificate; when the true owner of the number verifies their identity with their certificate, the number is deleted from other (unverified) accounts that have entered the same number. Your account is personal; it cannot be transferred or allowed to be used by anyone else.
• Accurate information: It is your responsibility to keep your profile information (phone, email, address) accurate and up to date. Your first name, last name and Turkish ID number are verified at your first signature against the information in your signature certificate, and your account is locked to that identity (see "Identity verification"); until the lock is established, you can correct this information yourself. Incorrect information can lead to a signature being blocked, an invoice being issued incorrectly and the account being suspended.
• Verifications: To sign, you must verify your email address (with the 6-digit code sent to your email) and your phone number (with the 6-digit code sent by SMS); for purchases, only an account and acceptance of the current Terms of Use are required. Verification codes are personal; do not share them with anyone.
• Identity verification: When you sign for the first time, the Turkish ID number and first and last name in your qualified electronic signature certificate (e-signature card or mobile signature) are compared on the server with the information in your profile; the first successful match locks your account to that identity. If the information in your certificate does not match your profile before the lock, the signature is blocked; you correct your profile and try again — no support request is opened. If a signature is attempted with a different certificate after the lock, the signature is blocked; because the account is locked to a different identity, this signature cannot be used. You cannot change the locked first name, last name and Turkish ID number yourself; if they are wrong or have been legally changed, you must apply through support with a document that proves your identity.
• Password and email changes: When you want to reset/change your password or change your account email, you are asked to enter a 6-digit code (valid for 10 minutes) sent to the relevant email address. When your password or email address changes, an informational email is sent for your security.
• Security: It is your responsibility to protect your sign-in provider account (Google/Apple) and your device. You are responsible for actions taken through your account; if you notice unauthorized access, tell us immediately. Sensitive actions require that you have signed in again recently: within the last 10 minutes for deleting your account and changing your account email, and within the last 5 minutes for viewing your ID number in plain form.
• Viewing requires no account: An account is not required to open or read documents or to verify signatures; an account is required to edit, sign and save a document (opening an account is free).

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4. Signature credit, PRO and gifts

To sign, you must have a signature credit, an active PRO (purchased or gift), or an ad token (see Section 6):

• Signature credit: The credit used to sign a document, or to edit and sign an external document; it is not spent under a PRO subscription. Each completed signature deducts 1 signature credit; if a signature is not completed (PIN cancellation, technical error), no credit is deducted. Document ticket: When you start editing a UDF document that comes from outside the app (an external one), 1 signature credit is deducted for that document and covers one signature of that document; this credit is not returned even if you give up editing or the signature is not completed (the document ticket is free with PRO). The fee is shown on screen before you start editing. Signature credits are not sold; they are granted as gifts (see below) or used through an ad token (see Section 6). Signature credits do not expire; they are used only inside the app, cannot be converted to cash, cannot be transferred, and cannot be moved to another account.
• PRO: For the duration of PRO, signatures and document tickets do not deduct signature credits (the phrase "unlimited signatures" describes this; technical limits such as the daily ad cap, and store rules, still apply). PRO can be purchased from the app store as a monthly or yearly subscription (see Section 5) or granted as a gift.

Gifts (campaigns in effect on the date these terms are published):

• Starting signature credit: Granted once when you verify your email address (3 signature credits).
• PRO for everyone: Every account that completes identity verification is PRO until the end of 30 November 2026 (Türkiye time); PRO starts at the moment identity verification is completed (at your first signature, see Section 3). Identity verification is not required for accounts opened before this text took effect or accounts that accepted the previous text of these terms; these accounts are also PRO until the same date. The launch value of PRO for this trial period is TRY 39.99 (VAT included); a free-of-charge delivery invoice is issued and no payment is collected from you (see Section 7).
• 6 months of PRO for the first 100 users: The first 100 accounts that successfully complete identity verification are granted 6 months of PRO, starting from the moment of completion. The 101st account does not receive it; the same person does not receive it a second time. The launch value of this 6-month gift PRO is TRY 159.99 (VAT included); a free-of-charge delivery invoice is issued and no payment is collected from you (see Section 7).
• Gift signature credit: Within the campaigns we announce (e.g., feedback), our administrator may grant signature credits to your account, recording the reason.

Gift PRO is not a subscription: no fee is charged, it does not renew automatically, and it ends when its duration expires. If it overlaps with a purchased PRO, the durations are added together: the period you purchased begins at the end of your gift or campaign PRO duration that is in effect at that moment; no day is lost. We may change or end gift campaigns by announcing it in advance; gifts that have been granted are not revoked. Abusing campaigns (fake accounts, fake identity, duplicate registration) is grounds for closing the account and canceling the gifts.

Signing requires connecting to the server; you cannot sign without an internet connection. Opening, reading and editing a document, and the mathematical verification of a signature, also work offline.

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5. Purchase, subscription and refund

• PRO subscriptions are currently purchased only through the app store (Google Play or App Store); signature credits are not sold. For store purchases, the rules on payment, collection, renewal, cancellation and refund are subject to the terms of the relevant store, and the sales document is issued by the relevant store.
• Sales through drnportal.com are not currently made; they may be opened in the future. When opened, the rules on payment, invoicing (see Section 7), withdrawal and refund for these sales will be subject to these terms, to consumer legislation and to the preliminary information that will be shown to you before the sale; this Section will be updated and announced before sales are opened.
• PRO subscriptions purchased from the store are sold with the periods the store offers (monthly / yearly) and renew automatically unless canceled. Your PRO duration is calculated based on the period end reported by the store; each renewal adds the new period to the end of your existing duration. You cancel through the account settings of the store where you bought the subscription; the cancellation takes effect at the end of the current period — a canceled subscription remains PRO until the end of the period and is not renewed. There is no upgrade/downgrade between subscription types; a second subscription counts as a separate purchase.
• A store purchase is applied to your account after the receipt reported by the store has been verified on our server. If the store cancels or refunds a transaction, the period of that transaction is deducted from your PRO duration (your PRO end date is moved back, but not to a date earlier than that day); signatures made during that period are not reversed. After the third refund, purchasing is closed on your account; to have it reopened, you must write to us through support.
• Prices and subscription contents may change. A change applies to purchases made after it takes effect; it does not affect your current subscription period.
• A purchase cannot be transferred to another UDF360 account using the same store account.

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6. Rewarded ad (signing by watching an ad)

Inside the app, whenever you wish, you can sign by watching a short ad. The ad reward is not added to your signature credit balance and does not accumulate: when the ad is completed, a single-use ad token valid for 30 minutes is granted; you can use the token for one signature within that time, and if it is not used it expires and becomes invalid. You are entitled to at most 5 ads per day. The ads are shown by Google AdMob. The reward is processed after the ad network's signed notification has been verified on our server; no reward is given for notifications that cannot be verified or that are repeated. No invoice is issued for an ad reward. Ads are personalized for you only with your explicit consent; if you do not give it, non-personalized ads are shown. We may limit or turn off the ad reward feature by announcing it in advance.

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7. Invoices

The e-Arşiv invoices issued by DRN (e-Fatura, if the recipient is an e-Fatura taxpayer) are for PRO granted as a gift and transactions that DRN collects payment for directly; after the entitlement is granted (for a sale: after payment confirmation), they are issued automatically within 7 days at the latest, sent to your registered email address, and kept in the app / member area under "My Invoices". The invoice issued for gift PRO is a free-of-charge delivery invoice: the invoice clearly states that it was provided free of charge under the launch campaign and states its comparable value; no payment is requested from you. No invoice is issued for signature credit gifts (see Section 4) — a signature credit has no monetary value, is not sold and cannot be converted to cash. For a gift PRO invoice, your profile must contain your first name, last name, address and ID number (see Section 3). For purchases made through the app store, the sales document is issued by the relevant store (see Section 5).

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8. Things that are your responsibility

• The content of the document belongs to you. You are responsible for what you write, what you sign and the accuracy of the document.
• The legal consequences of the signature rest with you. The app carries out the signing process technically; it does not give an opinion on the legal validity, time limit, addressee or consequences of the text you sign, and does not provide legal advice.
• Use only documents that you are authorized to access and act on; sign only with your own signature certificate. Using someone else's certificate, opening an account with a fake identity and abusing gift campaigns with multiple accounts are prohibited.
• It is your responsibility to ensure that the mobile signature subscription, the e-signature certificate and the card reader required for signing are in working order.
• Do not share your card password, mobile signature password, UYAP password or verification codes with anyone. The app never asks you for these in a support conversation or by email.
• You hold the backup of your documents. Your documents are not stored on DRN servers; we do not have a copy and cannot recover a lost document. The "UDF360" folder and sync options work on your device and your own cloud accounts.
• It is your responsibility not to use the app and the member area contrary to applicable law, these terms and store rules, not to reverse engineer them, and not to attempt to bypass security measures.

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9. Your documents and privacy (technical fact)

UDF360 does not provide a document storage service. Documents are processed on your device; document content is not uploaded to DRN servers. With mobile signing, the document goes, only at the moment of signing, to the mobile signature service that produces the signature, over an encrypted connection (TLS) (recipient and data sent: Privacy Policy Section 3); with e-signature card signing, the document does not leave the device. When you open a signed document, the certificate authority that issued the certificate is asked whether the certificate has been revoked (only the certificate serial number is sent). On our server, only the entitlement record (time, signature credit) and the identity match result are kept about your signature. Details: Privacy Policy.

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10. About verification results

When the app verifies a signature, it shows separately what it has verified: whether the document has changed since it was signed, the mathematical correctness of the signature, and whether the certificate reaches a recognized root are separate results. When a check cannot be completed, the app shows this as "could not be completed", not "failed". These results are the output of a technical check; they are not an opinion that a document is legally valid.

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11. Abuse, suspension and closure

In the event of a breach of these terms (especially Sections 3, 4 and 8), a fake identity, someone else's certificate, a duplicate account, payment fraud or an attempt to bypass security measures, we may suspend or close your account without prior notice; we may cancel gift entitlements. In a suspended account, document viewing continues to work; signing, purchases and ad rewards stop. You can submit your objection through support.

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12. Deleting your account

You can delete your account at any time from the app (Settings › My Account › Delete account, shown in the app as Ayarlar › Hesabım › Hesabı sil) or from the drnportal.com/hesap/sil page; for your security, deletion requires that you have signed in within the last 10 minutes. Deletion cannot be undone: your remaining signature credits, PRO duration, gifts, document ticket records and in-app support correspondence are deleted; no refund is made by us for unused entitlements. Deleting your account does not cancel your store subscription: you must cancel your Google Play / App Store subscription separately from your store account, otherwise the store may continue to collect payment; the app reminds you of this before deletion. For purchases made through the store, refund requests are subject to the rules of the relevant store; your consumer rights arising from law are reserved in all cases. The invoice and purchase records that we are required by law to keep are kept with their link to your account removed; the name, address and Turkish ID number on the invoice continue to be kept for 10 years as required by law, while the account label in the purchase record is pseudonymized (it has been separated from your identity). The explicit consent log, administrator access records and deletion trail are kept in pseudonymized form for 3 years after account deletion (details: Privacy Policy Section 5). If you hold an administrator role, you must first hand over the role.

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13. License and intellectual property rights

The rights in the app, the member area, and the software, text and images they contain belong to DRN. You are granted a non-transferable and non-exclusive right to use the app for your personal or professional work. This right does not cover distributing the app by copying it, selling it, renting it, or publishing a modified copy of it.

Information obtained from this app cannot be used to develop, produce or market a computer program that is substantially similar in terms of expression. The statutory rights that Law No. 5846 on Intellectual and Artistic Works grants to users are reserved; this Section does not narrow them.

The documents you create and sign belong to you; we claim no rights over these documents. The names and logos "UDF360" and "DRN Portal" belong to DRN.

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14. Continuity of service, maintenance and version shutdown

The app is developed with all the care we can give and is provided as is. We cannot commit that it will work uninterrupted on every device, every operating system version, every card reader and every mobile operator. There may be maintenance, updates and technical interruptions; we announce planned interruptions in advance whenever possible.

We may discontinue or change a version or a feature of the app; in a mandatory update for security reasons, signing, purchase and account actions (server-connected actions) stop until the update is made; opening, reading and (if you are signed in to your account) editing the documents on your device is always available. In this case, the app directs you to update. If we decide to end the service completely, we will notify you at least 30 days in advance and, within the framework of store rules, offer a solution for purchased entitlements that have not been used.

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15. Limitation of liability

We are not responsible for interruptions, changes or errors in the third-party services that the app depends on (the mobile signature service, the revocation query servers of certificate authorities, SMS and email providers, app stores, the ad network, infrastructure providers). Product descriptions on this website do not constitute a guarantee of compatibility with every document type, device or signature provider.

To the extent permitted by law, we have no liability for indirect damages, loss of profit, loss of data and damages arising from missed deadlines. In any case, our liability is limited to the amount you paid us for the app in the twelve months preceding the date on which the relevant claim arose. Liability arising from our intent or gross negligence, and your rights arising from consumer legislation, are reserved; this Section does not limit them.

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16. Changes

We may update these terms. The current text is always published at drnportal.com/legal/kullanim-kosullari, and the date at the top and the terms version change. For a significant change, the app and the member area show you the new version and ask for your acceptance before you continue (see Section 1). If you do not accept, you can delete your account; viewing documents without an account is not affected.

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17. Governing law and competent court

These terms are governed by the law of the Republic of Türkiye. The courts and enforcement offices of Ankara have jurisdiction over any disputes that may arise. The right of those who use the app as consumers to apply to the consumer arbitration committees, according to the monetary limits, and to the consumer courts at their place of residence is reserved.

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18. Contact

• General support: from within the app, Settings › Help › Support › "Write to us"; drnportal.com/destek; destek@drnportal.com
• Personal data requests: privacy@drnportal.com · KVKK Application
• Security reports: security@drnportal.com

UYAP is a brand and system belonging to the Ministry of Justice. UDF360 is an independent app; it has no connection to UYAP.

☐ I have read and accept the Terms of Use. (For this text only; there is no checkbox for the privacy notice.)