An independent British studio
Apps worth keeping.
We build focused, beautiful software: identification tools trusted by homeowners, puzzles with honest pricing, and utilities that respect your privacy. No ads. No dark patterns. No nonsense.
5apps in the family
0ads, anywhere, ever
0bytes of your data collected
UKdesigned and built
The apps
One studio. Five obsessions.
KnotweedID Live on the App Store
Spot Japanese knotweed before it costs you thousands.
Point your camera at a suspicious plant and know in seconds. KnotweedID pairs on-device intelligence with real UK surveyors: instant identification, season-by-season guides, and formal surveyor-verified reports for when a sale or purchase depends on the answer.
Nonogram Pure Coming soon
Endless logic puzzles. Pay once, play forever.
Every board is generated fresh and proven solvable by pure logic, so you will never have to guess. A shared daily puzzle, streaks, purist mode, dark mode, and not a single ad, subscription or energy bar in sight. One small price, yours for good.
In the lab
Three more on the bench.
Plot Mark Soon
Planning-ready location and block plans, drawn on your phone. Red line, blue line, done.
Learn more →Size Cap Soon
Photos and videos compressed to an exact size. Under the limit, every time, without leaving your device.
Learn more →DoseJot Soon
A private little journal for your doses. Reminders and notes that never leave your phone.
Learn more →
01
No ads, ever
If an app is worth using, it's worth paying for once, not being interrupted forever.
02
Private by design
Our apps collect nothing they don't need, and usually nothing at all.
03
Built, then kept
Small tools, maintained properly, supported by the people who wrote them.
Want to talk?
Partnerships, press, ideas, or a bug you've spotted: it all goes to the same inbox, and the people who built the apps read it.
Email uscontact@rta-group.co.uk