Drafted, then built
Every feature begins as a spec and a prototype. We measure twice so the build holds its shape.
Sheet 00 — Index · Mobile app studio · Biarritz, FR
We engineer apps
like instruments.
Kyrø is a mobile app studio in Biarritz. We treat every screen, gesture and millisecond as a measured part — drafted, calibrated and built to tolerance.
- Location
- 43.4832° N
- Discipline
- iOS · Android
- Tolerance
- ±0 px
The studio
A small team that drafts before it builds.
We're a focused crew of product engineers and designers. Before a single line ships, we draw the thing: flows, states, edge cases, motion curves. The result is software that feels deliberate — fast, legible, and quiet where it should be.
Built with Flutter
We develop our apps with Flutter — one calibrated codebase that ships to iOS and Android with real gestures and real performance.
Owned end to end
From the first sketch to the App Store listing, one team carries the work. No handoff gaps.
Our first app · Elvy
A coaching app, drawn to spec.
01 Goals, filtered by horizon
02 Progress, plainly charted
03 Quick add, always reachable
Goals, broken into parts
Elvy turns a big intention into small, measurable daily actions you can actually finish.
Streaks you can read
A calibrated streak gauge shows momentum at a glance, so progress feels earned, not gamed.
Coaching that nudges
Timely, plainly-worded prompts meet you where you are — encouraging on hard days, never nagging.
Growth, charted over time
Weekly readouts plot the trend lines, so you can see how far you've moved — and adjust the plan.
Distribution
Available on iOS & Android.
One app, drafted for both platforms. Built with Flutter, Elvy is tuned to feel native on each — the same precision, on whatever you carry.
Early access · 2026 — request an invite
Field data · beta cohort
Measured against real use.
- Daily check-ins
- 120k
- Goal completion
- 3.4×
- Day-30 retention
- 68%
- Avg. rating
- 4.9
logged across the beta
vs. the first week
of habits still active
from early testers
"It doesn't shout at me. Elvy feels like a tool that was actually built on purpose — I open it, I know exactly where I stand, I move on."
05
Contact
Want to know more about our apps?
Drop us a line and we'll tell you what we're building, share early access, and keep you posted on what's next.
contact@kyro-studio.com