# PNrelief vs Fit AI

The clearest difference is update cadence: Fit AI at every 10 days against PNrelief's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PNrelief ships an update every 9 months, Fit AI every 10 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | PNrelief | Fit AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pnrelief/id6444923226/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 10 days** |
| Monetization | Free | — |
| Size | 72 MB | 49 MB |
| Requires iOS | **13.0** | 14.0.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Chongqing Roblink Technology Co., Ltd.](https://appshunter.io/developer/1602774014) | [Ilya Tkach](https://appshunter.io/developer/1748120505) |

## What reviewers say

### PNrelief

[App page](https://appshunter.io/ios/app/pnrelief/id6444923226)

Control your massage devices with this app. Customize massage parts, treatment methods, pain levels, intensity, time, and modes. Connect via Bluetooth for effective treatment.

**Highlights:** Set massage parts, Customize treatment ways, Adjust pain level, Control massage intensity, Set massage time, Select massage modes, Bluetooth connection

**Features:** macOS Compatibility

**In-app purchases:** none


### Fit AI

[App page](https://appshunter.io/ios/app/fit-ai-workout-tracker/id6740336266)

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

**In-app purchases:** none


## Frequently asked questions

### Is PNrelief free?

PNrelief is free to download, with no in-app purchases.

### Is Fit AI free?

Fit AI is free to download, with no in-app purchases.

### Do PNrelief or Fit AI have ads?

Neither PNrelief nor Fit AI shows ads.

### Which is updated more often, PNrelief or Fit AI?

PNrelief ships an update every 9 months, and Fit AI every 10 days. Most recently, PNrelief was updated on November 3, 2026 and Fit AI on October 30, 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.*