Independent software studio
Apps that do one thing, properly.
NullTwenty makes focused software for Mac, iPhone, iPad, Android and the web. Private by default, native to each platform, and fairly priced.
The apps
05 shipping
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Keysi
macOS · menu bar
Hold ⌘ to see every keyboard shortcut of the app you're using, then click any row to run it. Free, with Pro at $14.99 once.
keysi.io → -
Cairn
iPad
A private browser for iPad. Spaces keep sign-ins apart, Cairns bring a whole session back weeks later, and summaries are written on the iPad itself.
App Store → -
Quickspan
Android · phone, tablet, foldable
The private calendar you just type into. Type “Lunch Friday 1pm” and it's on your calendar. No account, no ads, no tracking.
quickspan.app → -
AnywhereRoles
iPhone · Android · web
Remote jobs, organized from search to follow-up. Roles from many job boards, filters for salary and fit, alerts, and an application tracker, all backed by its own API.
anywhereroles.com → -
shotfleet
macOS · command line
Captures your App Store and Google Play screenshots in every language from one flow, and checks each one is really in the right language.
shotfleet.com →
How the apps are made
Private by default
Most apps need no account at all and keep your data on your device. Where there's AI, it runs on the device too.
Fair, simple pricing
Try it free first. Apps are a one-time purchase, and a subscription only where a live service has running costs. Never ads.
Native, not ported
Swift on Apple platforms, Kotlin and Compose on Android. Each app follows the conventions of the device it runs on.