Android apps
PocketToolz is made by Umer Labs, who also publish a handful of Android apps. They are listed here because a phone can do two things this site cannot: keep working with no connection at all, and stay on your home screen rather than in a tab.
The currency converter is the clearest example. The web version fetches the day’s rates, so it needs a network to be accurate — which is no use on a plane or a foreign SIM. The app carries its rates with it.
Compressor: Video, Image & PDF
Shrink videos, photos and PDFs without uploading them.
Pick a file, choose a size, and get a smaller version back. Compression runs on the phone itself, so nothing is uploaded and it works with no connection — the same principle this site is built on, applied to video, which a browser cannot realistically do.
Currency Converter Offline
Convert currencies with no connection at all.
Rates are downloaded once and kept on the device, so conversions keep working at a foreign ATM, at a border, or anywhere the signal has gone. The web version fetches live rates and needs a network to be accurate, which is exactly the gap this fills.
Spin The Wheel — Random Picker
Build a wheel, spin it, let it decide.
Customisable wheels for whatever needs deciding — a restaurant, a name drawn at random, a class lottery, an argument settled. Wheels are saved, so a list you use often is not retyped every time.
Fake Call — Prank Call Dialer
Make your phone ring exactly when you need it to.
Schedules a realistic incoming call on a delay, so there is a way out of a meeting that will not end or a conversation that has run long. Also, as the name admits, a decent prank.
Water Sort — Color Puzzle
Pour the colours until each tube holds one.
Pour coloured water between tubes until every tube holds a single colour. Easy to learn and quietly absorbing, with no timer hurrying you along — the colours stack up fast enough on their own.
Everything on PocketToolz stays free and needs no account, and that is not changing — the apps are a separate thing for the jobs a browser cannot do, not a paywall around the tools.