Kontest logoKontestClient project

Workout challenges with friends · iPhone & Android

Turn workouts into competitions.

Working out alone is hard to stick with. Kontest makes it a game you play with friends — challenge your circle on reps, volume, distance, steps or top lifts, and watch the leaderboard move as everyone logs.

Official site: thekontest.com

Kontest screenshot
Kontest main screen

Beyond step counts

Most challenge apps only count steps

Which leaves out everyone whose training happens in a gym. Kontest runs challenges on five things — most reps logged, total volume moved, distance covered, daily step totals, and top lifts head to head — so the group competes on what it actually does. Leaderboards update the moment someone logs, and Apple Health or Google Fit can feed steps and distance in automatically. Kontest is a client project: Nainnie Labs designed and built both apps, and the product belongs to the Kontest team.

Five challenge typesReps, volume, distance, steps, and top lifts head to head.
Live leaderboardsRankings move the moment a workout lands, not at week's end.
Public or privateChallenge your own circle, or join an open kontest.
Health integrationsApple Health and Google Fit feed steps and distance in.
AI coachingLeo adapts plans to each athlete's goals and results.
Built by Nainnie LabsBoth apps in Flutter, with real-time WebSocket leaderboards.

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
Kontest challenges — exercises, weight, distance, steps and strength competitions with live rankings

Coaching

Meet Leo, the AI trainer

  • Personalized plans built around your goals and schedule
  • Adaptive programming that responds to your performance
  • 24/7 chat for guidance, recovery and technique questions
Kontest AI coach Leo — personalized plans, adaptive programming and 24/7 coaching

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
Kontest live workout — running timer with set-by-set weight and rep logging

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
Kontest stats — XP levels, total workouts and hours, with Apple Health syncing

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 activity feed — see and react to what your training partners logged

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

Kontest home screen — weekly volume, streak and one-tap workout logging
Kontest challenges — exercises, weight, distance, steps and strength competitions with live rankings
Kontest AI coach Leo — personalized plans, adaptive programming and 24/7 coaching
Kontest live workout — running timer with set-by-set weight and rep logging
Kontest stats — XP levels, total workouts and hours, with Apple Health syncing
Kontest activity feed — see and react to what your training partners logged

From the blog

More on Kontest

Questions

Kontest — frequently asked

Is there an app for doing workout challenges with friends?

Yes — Kontest. You challenge your circle, everyone logs their sessions, and a live leaderboard updates as they do. Challenges can run on reps, total weight moved, distance, daily steps or top lifts, so the group picks what it actually wants to compete on.

What kinds of challenges can you run?

Five: most reps logged, total volume moved, distance in miles or kilometers, daily step totals, and top lifts head to head. Most challenge apps only count steps, which leaves anyone who trains in a gym out of the competition.

How do the leaderboards work?

They update live. The moment someone in your circle logs a workout, the standings move — so the competition runs through the week rather than being settled when somebody adds up totals at the end of it.

Does Kontest sync with Apple Health or Google Fit?

Yes. Link Apple Health on iPhone or Google Fit on Android and your steps and distance count toward your level automatically, so walking and running you already track are not logged twice.

Can I compete with people I don't know?

Yes. As well as challenging friends, you can join public kontests and compete against strangers — useful if your own circle is not on the app yet.

Is Kontest good for gym and lifting, or just steps?

Both, and the lifting side is the point of difference. You can log sets as they happen and compete on reps, total volume or a head-to-head top lift, not only on step counts — which is what most group fitness challenge apps limit you to.

Who is Leo?

Leo is Kontest's AI coach: personalized programming, plans that adapt as you progress, flexible scheduling, and answers about training and recovery whenever you ask. The app's own line for it is a world-class coach without the world-class invoice.

Is Kontest free?

Yes. Logging workouts, competing in challenges and tracking your stats are free, with no credit card. A Pro tier is planned, adding unlimited Leo coaching and deeper analytics.

Is Kontest on iPhone and Android?

Yes, on both — the App Store and Google Play. Challenges and leaderboards work across the two, so a friend group does not all have to be on the same phone.

Can I use it to keep a friend group accountable?

That is what it is built around. You follow your workout partners, see their sessions as they land and react to them, and the running leaderboard means skipping a week is visible to the people you train with — which is the part that tends to work.

Who built Kontest?

Nainnie Labs designed and built the apps for iOS and Android. Kontest is owned and published by its own team, not by us — this page is a case study of our work on it, and the app itself lives at thekontest.com.

Kontest logo

Start your first kontest.

Free on the App Store and Google Play.

Questions? hello@nainnielabs.com