Coin52 privacy policy

Last updated: October 28, 2026

Coin52 is a planner for buying crypto with the 52‑week challenge. It is made by Levia Star, Ukraine. This policy explains what data the Coin52 app handles and what this website handles.

In short

No account and no sign‑up.
Everything you enter (plans, purchases, amounts, settings) is stored only on your device.
The developer does not collect, receive or sell any data from the app.
The app has no analytics, advertising, crash reporting or tracking tools.
To show prices, the app requests public market data from Binance and Bybit. These requests contain only the trading pair, for example BTCUSDT, and a date range for historical prices.

Who is responsible

Levia Star, Ukraine, the developer of Coin52. Contact: coin52@leviastar.com.

Data stored on your device

Plans: names, coins and their shares, contribution mode, amounts and start dates.
Recorded purchases: dates, amounts, prices and coin quantities.
Settings: theme, language, privacy mode, reminders and app lock.
Last known prices, downloaded coin logos and the milestones you reach.
A copy of your data from before the last restore, so you can undo a restore.
Temporary files you are sharing (see «Backups, exports and sharing»).

This data stays in the app's private storage, and the developer has no access to it. You can delete individual plans and purchases in the app. All app data is deleted when you uninstall Coin52 or clear its storage in your phone's settings.

Network requests

The app connects to the internet only for the following.

Prices. The app requests prices from the public Binance market data API (data-api.binance.vision) and the public Bybit API (api.bybit.com). A request contains the trading pair and, for historical prices, a date range. It contains no amounts, quantities, plan names or identifiers. Like any internet request, it reveals your device's IP address and the standard technical name of the app's network library. Binance and Bybit process this under their own privacy policies. Coin52 is not affiliated with Binance or Bybit. You can always enter prices manually.

Coin logos (optional, off by default). If you turn on «Download missing logos (optional)» in Settings, the app downloads logos it doesn't already include from jsDelivr (cdn.jsdelivr.net), a public content delivery network. The request contains the coin's ticker, and jsDelivr sees your IP address. Downloaded logos are stored on your device and stay available after you turn the setting off.

The app makes no other network requests. Links in the app's About section open your browser or email app.

Permissions

Internet: prices and, if you turn them on, coin logos.
Notifications: contribution reminders. They are created on your device; no notification server is involved.
Run at startup: restores your reminders after the phone restarts.
Biometrics: the optional app lock. Fingerprint or face recognition is done by your phone's system; the app only learns whether unlocking succeeded and never gets biometric data.

The app doesn't ask for access to your contacts, location, camera, microphone or photos. It only opens a file you choose yourself in the system file picker.

A backup (JSON) or an export of your contributions (CSV) is created only when you ask for it, and saved only where you choose: in the system file picker or through the share sheet.
Backup and export files are not encrypted. Anyone who has the file can read your plans and amounts, so keep it somewhere safe.
Milestone cards (images) leave the device only when you share or save them. In privacy mode the amounts on them are always hidden.
Temporary copies made for sharing are kept in the app's cache and removed automatically: images after 1 hour, backup and export copies after 24 hours.
The app opts out of Android cloud backup, so the system doesn't upload its data to your Google account. If you use your phone's device‑to‑device transfer when moving to a new phone, that tool may copy app data to the new device.

App stores

If you install Coin52 from an app store, the store operator (for example, Google for Google Play) processes data under its own terms, such as your installs and technical crash and performance statistics collected by the system. The developer can see only aggregated statistics that the store provides.

Age

Coin52 is intended for adults (18+).

Email

If you write to coin52@leviastar.com, we receive your email address and your message and use them only to reply to you. We don't add you to any mailing list. Our email is hosted by Proton Mail.

This website

coin52.leviastar.com is a static website. It uses no cookies, no analytics and no third‑party fonts or scripts. It is hosted by Cloudflare, which processes technical data such as IP addresses to deliver the site and protect it from abuse. If we ever add analytics, it will be cookieless, and this section will be updated before it is enabled.

Your choices and rights

Your app data is under your control on your device: you can view, export and delete it at any time. The developer holds no app data about you. For any question or request about your personal data, write to coin52@leviastar.com. If you are in the EU or the UK, you can also contact your data protection authority.

Changes to this policy

When the app or the website changes in a way that affects your data, we will update this page and its «Last updated» date. Earlier versions are kept, and we will send them on request.