Comparison

Fitforce2 vs Nak by Polyme

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Fitforce2

Features
Read full description

-- Say Goodbye to Boring Workouts! -- With our interactive exercise games, you’ll be so entertained that the tiredness will be the last thing on your mind. -- Just a Smartphone is All You Need -- Thanks to our Posture recognition AI technology, We can detect your movements without any extra equipment! Enjoy easy and fun workouts with just your smartphone. -- Automated Health Tracking and Reports -- Every time you work out, the game will record your calories burned, exercise moves, muscles used, and exercise time, and will visualize this data in daily and weekly formats to help you plan more effective workouts. Never Get Bored with Over 1000 Stages! We offer games that incorporate 12 different exercise moves and over 1,000 stages, making your exercise fresh and exciting every day. Set your goal and dive in! We have a lot of workout plans for you to explore, created by fitness trainers advice or other users. Just find the one that suits your goal and start working out! You can also customize it or create your own and share it with others. We'll help you stick to your plan and provide weekly progress summaries Get fit and have fun together! If you’re ready, let’s get started! Learn more about Terms of Use: https://fitforce2.com/terms

About

Nak by Polyme

This app uses your device's front camera to ensure your eyes are closed during meditation sessions. The timer only progresses when your eyes are shut, preventing faking and encouraging genuine mindfulness. It offers various session lengths, progress tracking, and private journaling.

Highlights
  • Eye-tracking to verify closed eyes
  • Timed meditation sessions
  • Progressive otter transformation
  • Earn orbs and climb leaderboards
  • Private journaling
  • Logs Mindful Minutes to Apple Health
Features
Read full description

Sit with a little otter on a floating island. nak is not another meditation timer - the front camera checks that your eyes are actually closed. The clock only runs while they are. Open your eyes and it waits. This is meditation you can't fake. - Seven levels, from 5 minutes to a full hour - The otter transforms as you go deeper - all the way to the Naga King - Earn orbs, climb the ladder on total minutes or longest daily streak - Journal what came up, privately - Logs Mindful Minutes to Apple Health Privacy first: all camera processing happens on-device. Not a single frame ever leaves your phone - only the measured numbers are sent. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Fitforce24 screens
Nak by Polyme4 screens

Verdict

The call

The clearest difference is in-app purchases: Nak by Polyme at none against Fitforce2's 10. Nak by Polyme also leads on update cadence (every 2 days vs every 3 weeks). Fitforce2's advantage is iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Fitforce2 sells 10 in-app purchases, starting at $4.99 per month. Nak by Polyme asks for nothing beyond the download.

UpkeepUpdate frequency

Fitforce2 ships an update every 3 weeks, Nak by Polyme every 2 days. The most recent releases landed on September 29, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 7 level
Fitforce2 versus Nak by Polyme: the parameters behind the verdict, then further details
ParameterFitforce2Nak by Polyme
PriceFreeFree
Rating—4.9 (8 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—8 — better
Update frequencyEvery 3 weeksEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS13.0 — better15.0
Further details — not scored
Size1.5 GB144 MB
Age rating9+4+
DeveloperRUNNEX TECHNOLOGY COMPANY LIMITEDPOLYME DOT COMPANY LIMITED

In-app purchases

10 purchases

Fitforce2

Subscriptions2
  • Premium pass - monthly7 Days trial$4.991 Month
  • Premium pass - annual$39.991 Year
One-time8
  • 6 Gems$0.99
  • Premium - 1 Day$1.49
  • 35 Gems$4.99
Show 5 more
  • 70 Gems$9.99
  • 15,000 Coins$39.99
  • 300 Gems$39.99
  • 640 Gems$79.99
  • 32,000 Coins$79.99
None

Nak by Polyme

No in-app purchases

Questions

Is Fitforce2 free?
Fitforce2 is free to download, with in-app purchases available.
Is Nak by Polyme free?
Nak by Polyme is free to download, with no in-app purchases.
Do Fitforce2 or Nak by Polyme have ads?
Neither Fitforce2 nor Nak by Polyme shows ads.
Which is updated more often, Fitforce2 or Nak by Polyme?
Fitforce2 ships an update every 3 weeks, and Nak by Polyme every 2 days. Most recently, Fitforce2 was updated on September 29, 2026 and Nak by Polyme on October 11, 2026.

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