KontestClient projectCompetitive fitness · AI coach · iPhone & Android
Turn workouts into competitions.
Working out alone is hard to stick with. Kontest makes it a game you play with friends — set a challenge, log your sessions, and watch the leaderboard move in real time.
Official site: thekontest.com
Our work
Built by Nainnie Labs, owned by Kontest
Kontest is a client project. We designed and built the app across iOS and Android in Flutter, with real-time WebSocket leaderboards that keep every participant's ranking in sync as they train, an AI coaching layer, and Apple Health and Google Fit integration. The product belongs to the Kontest team — this page is a case study of the app we shipped for them.
Want something like this built? Talk to us.
What Kontest does
From a lonely gym session to a competition
Compete
Challenge your circle
- Five contest types: exercises, weight, distance, steps and strength
- Create your own, or join one someone else started
- Live rankings that move as participants log workouts
Coaching
Meet Leo, the AI trainer
- Personalised plans built around your goals and schedule
- Adaptive programming that responds to your performance
- 24/7 chat for guidance, recovery and technique questions
Log
Track every set as it happens
- Live timer with set-by-set weight and rep logging
- Three ways in: log a lift, one-tap repeat, or quick record
- Templates for the sessions you run often
Progress
Level up every session
- XP, levels, streaks and personal records
- Weekly volume and hours, with training-balance heat maps
- Apple Health and Google Fit sync steps and distance for you
Social
Accountability that is actually fun
- Follow training partners and see what they logged
- React to sessions and keep each other honest
- Badges and achievements as you go
Kontest is a product of the Kontest team; Nainnie Labs designed and developed the app for them. Leo is an AI fitness coach, not a medical professional — always consult a qualified healthcare provider for medical advice, injury diagnosis or treatment. Feature availability and pricing are set by Kontest and may change; the app's own site is the source of truth.
Pricing
Free to start.
Kontest is free to download and free to start training with, with no per-session fees. A Pro plan for unlimited Leo coaching and deeper analytics is on the way.
- Free on the App Store and Google Play
- Challenges, logging, leaderboards and progress tracking included
- Pro plan announced for unlimited AI coaching and analytics
Pricing is set by Kontest — check thekontest.com or the store listings for the current plans.
Take a look
Kontest, screen by screen
Questions
Kontest — frequently asked
What is Kontest?
Kontest is a competitive fitness app. You log your workouts, then compete with friends in challenges — reps, weight, distance, steps or strength — with leaderboards that update live as everyone trains.
Who is Leo?
Leo is Kontest's AI coach. It builds a plan around your goals and schedule, adapts it based on how your sessions actually go, and is available to chat any time. Leo is a fitness coach, not a medical professional.
Is Kontest free?
Kontest is free to start, with no per-session fees. A Pro plan for unlimited Leo coaching and deeper analytics is on the way, according to the app's own site.
Does Kontest work with Apple Health or Google Fit?
Yes. Connect Apple Health or Google Fit and your steps and distance sync automatically, so step and distance challenges count your activity without you logging it by hand.
Who built Kontest?
Nainnie Labs designed and built Kontest for the Kontest team, across iOS and Android, using Flutter with real-time WebSocket leaderboards. Kontest is their product; we were the studio behind it.