Stop wondering
Stop wondering. Know for sure. Certain helps you confirm important safety tasks before you leave home — and gives you proof you can trust later. Locked the door? Turned off the gas? Switched off appliances? Record it in seconds and move on without the nagging doubt. Why Certain? • Instantly record safety checks • Automatic date & time stamps • Optional photo evidence for reassurance • Organise items by room • Simple, calming interface • Lock/Unlock and On/Off items When doubt creeps in, just open Certain and see exactly what you did — and when. Privacy Built In • No accounts • No cloud storage • No tracking • All data stays on your device Free & Plus Free: Track up to 3 items Certain Plus: Unlimited items and photos £0.99/month or £6.99/year Certain is a simple record-keeping tool designed to help you trust yourself and leave home with confidence. Terms of Use: https://tiltedlensacc-star.github.io/Certain/terms-of-use.html
| # | Name | Price | Currency | Region |
|---|---|---|---|---|
| 1 | Item | ¥ 0 | CNY | 中国 |
| 2 | Certain Plus | ¥ 48 | CNY | 中国 |
| 3 | Certain Plus | ¥ 8 | CNY | 中国 |
