Coin52A missed week doesn't expire
An overdue week can be recorded later. Spare money can go in advance: the app highlights the weeks with the closest target.
52 weeks of crypto buys. Only you see the amounts.
Coin52 turns the 52‑week savings challenge into a crypto purchase plan: weekly targets for the whole year, a record of every buy and your portfolio's value. You buy on your own exchange. No account, no servers, no analytics.
What actually leaves your phone
To show a price, the app needs one request to an exchange's public API. It contains the coin's ticker. Nothing else about your plan is in it.
on your phone· local only
- Plans and weekly targets local
- Purchases and coin quantities local
- Plan names local
- Settings and last prices local
price
Binancedata-api.binance.visionprice
Bybitapi.bybit.comonly if you turn it on
Coin logoscdn.jsdelivr.netThe exchange receives the ticker, your IP address and user agent, like with any price request. No amounts, quantities or plan names are in the request.
The developer receives nothing. The app has no analytics, ads, crash reports or accounts. When you uninstall it, all its data goes with it.
Plan first. Then just record.
Pick a mode and a base amount: each of the 52 weeks gets its own target. Try it here, it works the same way in the app.
plan mode
$6,890.005 × 1,378week 1: $5.00, week 52: $260.00
then every week
03privacy
One tap and the amounts disappear
- Privacy mode hides amounts on screens, in notifications and on the cards you share.
- Exchanges only get the ticker so they can return a price. No amounts or plan names are in the request.
- The developer receives nothing: no analytics, no ads, no accounts.
Small things that make the year easier
Allocation down to 0.01%
40%BTC35%ETH25%SOL100%always in total
Any coin with a USDT pair. Every buy is split by these shares.
Your backup, in your hands
JSON to restore and CSV for spreadsheets. The file only appears where you save it yourself.
Several plans at once
Each plan lives on its own: its own coins, its own contribution mode and its own progress over 52 weeks.
52 Weeks · BTC/ETH
On Dashboard
Started Feb 5, 2026 · Classic
$6,890.00••••••••••
38 of 52 weeks
Contributed$3,705.00••••••••••
Portfolio value$4,088.29••••••••••
BTC · ETH · SOL
Binance
Altcoins
Started Jun 3, 2026 · Fixed
$1,040.00••••••••••
21 of 52 weeks
Contributed$420.00••••••••••
Portfolio value$480.91••••••••••
BNB · LINK · DOT
Binance
Unfolded screen: two panes instead of one
On foldables and tablets, navigation moves to a side rail and the screen splits in two. Progress and portfolio value on the left, coins and recent contributions on the right.
- No account
- No ads
- No analytics or trackers
- Data stays on your phone
- Free
Three stones, one logic
Indigo, Aquamarine or Amber, light or dark theme. Pick a stone and this page changes along with the app.
06FAQ
Questions about the 52‑week challenge
In short: how the plan works, how much it adds up to and what happens to your data.
How does the 52‑week challenge work with crypto?
You pick a mode and a base amount, and each of the 52 weeks gets its own target. In Classic mode a week's target is the base times the week number, from smallest to largest or the other way round. In Fixed mode it's the same amount every week. You buy on your own exchange, record the purchase in Coin52, and it's split between coins by your shares.
How much do you save with the 52‑week challenge?
In Classic mode it's always base × 1,378: a $1.00 base gives $1,378.00, and a $10.00 base gives $13,780.00. In Fixed mode it's the amount × 52, so $25.00 a week gives $1,300.00. The calculator in “How it works” works it out for your amount.
Does Coin52 buy crypto for me?
No. The app doesn't connect to an exchange or a wallet and never asks for API keys. It plans and records purchases, and you do the buying. Prices come from the public Binance and Bybit APIs, and you can always enter them manually.
Do I need an account? Where does my data go?
There's no account and no sign‑up. Everything you enter stays on your phone, and the exchange only sees a request for a coin's price. You save backups yourself, wherever you choose.
Is Coin52 free?
Yes. Version 1.0 is completely free: no ads, no subscriptions and no in‑app purchases.