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Privacy Policy

Effective and last updated: 12 October 2026 · Version: 2026-10-12 · Print / PDF

This English text is a translation provided for convenience. Where the Turkish version differs, the Turkish version prevails for users in Türkiye.

In short

Who we are

Belli Olur is a site of free calculators (tax, salary, loans, exam scores and more) and practical office tools such as PDF and image utilities. This policy applies to the service provided at belliolur.com and related apps.

Data controllerHasan Akgül (an individual developing software products under the Pingel brand; “Pingel”)
LocationIstanbul, Türkiye
E-mailhasan@pingel.dev
Webpingel.dev

What we process and why

The table below lists the categories of data we process, why, the legal basis under Turkish law (KVKK) and how long we keep it. Legal bases for other regions are in the section for your region below.

DataPurposeLegal basisRetention
Tool inputs
Calculation values, favourites, recently used
Calculating on your device; not sent to our serversNecessary to conclude or perform a contract (KVKK Art. 5(2)(c))In your browser until you delete it
Technical and security logs
IP address, browser/device info, request time, error logs
Running the service, keeping it secure, preventing abuse and attacks, obligations under Law No. 5651Our legitimate interests, provided your fundamental rights are not harmed (KVKK Art. 5(2)(f)); Expressly provided for by law (KVKK Art. 5(2)(a))Hosting provider logs 30 days; records under Law 5651 for the statutory period (1–2 years)
Usage statistics
Pages visited, session duration, approximate location (country/city), device type, cookie ID
Anonymised statistics to improve the site (Google Analytics) — only if you consentYour explicit consent (KVKK Art. 5(1)); you may withdraw it at any time14 months in Google Analytics
Advertising data
Cookie ID, ad interactions, approximate location
Showing ads; personalising them by interest if you consent (Google AdSense)Your explicit consent (KVKK Art. 5(1)); you may withdraw it at any timeAccording to Google's policy, up to 13 months
Contact and support
Name, e-mail, message content
Answering your questions and requestsOur legitimate interests, provided your fundamental rights are not harmed (KVKK Art. 5(2)(f)); Establishment, exercise or protection of a right (KVKK Art. 5(2)(e))2 years after the conversation ends

We do not ask for sensitive data such as national ID numbers, health, religion or biometrics; please do not enter them in free-text fields either.

How we collect data

We collect personal data electronically, partly by automated means, through the forms you fill in, the actions you take in your account, the e-mails you send us and the technical information your browser or device sends automatically (including cookies and similar technologies).

Who we share data with

We do not sell or rent your data to anyone for their own purposes. To run the service we share data only with the following providers, and only as far as their service requires:

ProviderPurposeLocation
Google Firebase Hosting (Google LLC)Hosting and serving the websiteGlobal content delivery network
Google reCAPTCHA / Firebase App CheckBot and abuse protectionUnited States
Google Analytics 4 (Google Ireland Ltd., Google LLC)Visit statistics — only with your consentEU and/or US
Google AdSense (Google Ireland Ltd., Google LLC)Showing ads — personalised only with your consentEU and/or US

We also disclose information to competent public authorities and courts only where there is a lawful request or legal obligation.

International transfers

Some of the providers above process data on servers outside Türkiye (in the EU, the US and other countries). Under Article 9 of the KVKK these transfers rely on appropriate safeguards such as standard contracts and the providers' data processing terms, and, for occasional transfers where these cannot be used, on the cases in Article 9(6) (necessity for the performance of a contract or explicit consent). For users in the European Economic Area, transfers rely on the European Commission's Standard Contractual Clauses and, where the provider is certified, the EU–US Data Privacy Framework.

How long we keep data

We keep data for the period stated in the table above or, if none is stated, for as long as the purpose requires. We then delete, destroy or anonymise it. Copies in backups are removed within the backup cycle (at most 35 days). Payment records that tax and commercial law require us to keep are retained for the statutory period (up to 10 years).

Security

Connections are encrypted with HTTPS; database access is restricted by roles and rules; administrative access is kept to a minimum and logged. No system is perfect; if a breach affects your personal data we will notify the competent authority and you as required by KVKK Art. 12(5) and GDPR Arts. 33–34.

Children

The service is not directed at children under 13 and we do not knowingly collect their data. Users aged 13–18 should use it with a parent's permission. If you believe a child has given us data, tell us and we will delete it.

Cookies

The cookies we use and how to change your choice: Cookie Policy

Your rights — by region

The section for your location opens automatically; you can open any section. Wherever you are, you can write to hasan@pingel.dev for any request; we reply free of charge within 30 days.

Türkiye — KVKK (Law No. 6698)

Under Article 11 of the KVKK you may ask whether your data is processed, request information about it, learn the purpose and whether it is used accordingly, know the third parties it is transferred to, request correction, deletion or destruction (under Art. 7) and notification of these to recipients, object to an adverse result arising solely from automated analysis, and claim compensation for damage caused by unlawful processing.

Send your request from the e-mail address registered with us to hasan@pingel.dev, or in writing. We reply free of charge within 30 days. If you are not satisfied you may complain to the Turkish Personal Data Protection Board. Details: KVKK Privacy Notice (Türkiye).

European Union / EEA, United Kingdom and Switzerland — GDPR

In these regions your data is protected under the General Data Protection Regulation (GDPR), the UK GDPR and the Swiss FADP. Our legal bases are:

DataPurposeLegal basisRetention
Tool inputs
Calculation values, favourites, recently used
Calculating on your device; not sent to our serversPerformance of a contract (GDPR Art. 6(1)(b))In your browser until you delete it
Technical and security logs
IP address, browser/device info, request time, error logs
Running the service, keeping it secure, preventing abuse and attacks, obligations under Law No. 5651Legitimate interests (GDPR Art. 6(1)(f)); Legal obligation (GDPR Art. 6(1)(c))Hosting provider logs 30 days; records under Law 5651 for the statutory period (1–2 years)
Usage statistics
Pages visited, session duration, approximate location (country/city), device type, cookie ID
Anonymised statistics to improve the site (Google Analytics) — only if you consentConsent (GDPR Art. 6(1)(a))14 months in Google Analytics
Advertising data
Cookie ID, ad interactions, approximate location
Showing ads; personalising them by interest if you consent (Google AdSense)Consent (GDPR Art. 6(1)(a))According to Google's policy, up to 13 months
Contact and support
Name, e-mail, message content
Answering your questions and requestsLegitimate interests (GDPR Art. 6(1)(f)); Legitimate interests (GDPR Art. 6(1)(f))2 years after the conversation ends

Your rights: access, rectification, erasure (“right to be forgotten”), restriction, data portability, objection to processing based on legitimate interests and to direct marketing, withdrawing consent at any time, and not being subject to solely automated decisions. You may lodge a complaint with the data protection authority in your country. We have no EU representative; you can contact us directly at hasan@pingel.dev.

United States — California (CCPA/CPRA) and other states

In the last 12 months we collected personal information in the categories listed in the table above, from the sources and for the purposes shown there. We do not sell your personal information and we do not use sensitive personal information to infer characteristics about you. Advertising cookies run only with your consent; without it no data is shared for targeted advertising.

Under the laws of California, Colorado, Virginia, Connecticut, Utah, Texas, Oregon and similar states you have the right to know/access, correct, delete, obtain a portable copy and opt out of sale/sharing or targeted advertising. We will not discriminate against you for exercising these rights. We honour the Global Privacy Control (GPC) signal as an opt-out request. Send requests to hasan@pingel.dev; you may also use an authorised agent, and we will reasonably verify your identity.

Brazil — LGPD

Under the Lei Geral de Proteção de Dados (LGPD) you may confirm processing, access, correct, anonymise, block or delete data, obtain portability, learn with whom data is shared, withdraw consent and complain to the ANPD. Our legal bases are the same as in the GDPR section (contract, legal obligation, legitimate interests, consent). Requests: hasan@pingel.dev.

Canada — PIPEDA

You may access and request correction of your personal information and withdraw consent. Your information may be processed outside Canada and be accessible to authorities there. Please raise concerns with us first (hasan@pingel.dev), then with the Office of the Privacy Commissioner of Canada.

India — DPDP Act 2023

Under the Digital Personal Data Protection Act you may obtain a summary of the data processed, request correction and erasure, have grievances redressed and nominate a person to exercise your rights. Grievance contact: hasan@pingel.dev. If you are not satisfied you may approach the Data Protection Board of India.

Other countries

The laws of your country may give you additional rights. Wherever you are, you can ask us at hasan@pingel.dev to access, correct or delete your data or to withdraw consent. We reply within the period required by local law and at most 30 days.

Changes

We may update this policy. We announce material changes on the site and notify account holders. The date and version at the top show the current text.

Contact

For any privacy question or request: hasan@pingel.dev