# Fitforce2 vs Nak by Polyme

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.

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.

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.

## The numbers

| Metric | Fitforce2 | Nak by Polyme |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (8 ratings)](https://appshunter.io/ios/app/nak-by-polyme/id6791503108/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 1.5 GB | 144 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 9+ | 4+ |
| Developer | [RUNNEX TECHNOLOGY COMPANY LIMITED](https://appshunter.io/developer/1402662893) | [POLYME DOT COMPANY LIMITED](https://appshunter.io/developer/1894242895) |

## What reviewers say

### Fitforce2

[App page](https://appshunter.io/ios/app/fitforce2/id1607830236)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium pass - monthly | $4.99 | per month |
| Premium pass - annual | $39.99 | per year |
| 6 Gems | $0.99 | one-time |
| Premium - 1 Day | $1.49 | one-time |
| 35 Gems | $4.99 | one-time |
| 70 Gems | $9.99 | one-time |
| 15,000 Coins | $39.99 | one-time |
| 300 Gems | $39.99 | one-time |
| 640 Gems | $79.99 | one-time |
| 32,000 Coins | $79.99 | one-time |


### Nak by Polyme

[App page](https://appshunter.io/ios/app/nak-by-polyme/id6791503108)

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:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*