# UnitKit vs FSpower

The clearest difference is in-app purchases: FSpower at none against UnitKit's 2. FSpower also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. UnitKit sells 2 in-app purchases, starting at $0.99 per 7 days. FSpower asks for nothing beyond the download.

UnitKit ships an update monthly, FSpower every 5 weeks. The most recent releases landed on October 9, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | UnitKit | FSpower |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Size | 6 MB | 57 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [LukyLab](https://appshunter.io/developer/1698729177) | [Pion Power](https://appshunter.io/developer/1485384759) |

## What reviewers say

### UnitKit

[App page](https://appshunter.io/ios/app/unitkit-unit-converter/id6748941419)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $0.99 | per 7 days |
| Annual | $7.99 | per year |


### FSpower

[App page](https://appshunter.io/ios/app/fspower/id6753936564)

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

**In-app purchases:** none


## Frequently asked questions

### Is UnitKit free?

UnitKit is free to download, with in-app purchases available.

### Is FSpower free?

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

### Do UnitKit or FSpower have ads?

Neither UnitKit nor FSpower shows ads.

### Which is updated more often, UnitKit or FSpower?

UnitKit ships an update monthly, and FSpower every 5 weeks. Most recently, UnitKit was updated on October 9, 2026 and FSpower on October 28, 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.*