# Constant Scale vs FitPass+

The clearest difference is update cadence: FitPass+ at every 6 days against Constant Scale's every 4 weeks. Constant Scale's advantage is iOS requirement (11.0 vs 16.4). 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.

Constant Scale ships an update every 4 weeks, FitPass+ every 6 days. The most recent releases landed on November 8, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Constant Scale | FitPass+ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 6 days** |
| Size | 150 MB | 67 MB |
| Requires iOS | **11.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Yiwu Chaolan Import & Export Co., Ltd.](https://appshunter.io/developer/1788815884) | [FITPASS TECHNOLOGIES LTD](https://appshunter.io/developer/6798430804) |

## What reviewers say

### Constant Scale

[App page](https://appshunter.io/ios/app/constant-scale/id6740186656)

**Features:** macOS Compatibility

**In-app purchases:** none


### FitPass+

[App page](https://appshunter.io/ios/app/fitpass-plus/id6798430802)

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

**In-app purchases:** none


## Frequently asked questions

### Is Constant Scale free?

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

### Is FitPass+ free?

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

### Do Constant Scale or FitPass+ have ads?

Neither Constant Scale nor FitPass+ shows ads.

### Which is updated more often, Constant Scale or FitPass+?

Constant Scale ships an update every 4 weeks, and FitPass+ every 6 days. Most recently, Constant Scale was updated on November 8, 2026 and FitPass+ on November 6, 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.*