# OMA vs Wattstopperi3

The clearest difference is update cadence: Wattstopperi3 at monthly against OMA's every 19 months. OMA's advantage is iOS requirement (10.0 vs 15.6). 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.

OMA ships an update every 19 months, Wattstopperi3 monthly. The most recent releases landed on October 3, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | OMA | Wattstopperi3 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Monthly** |
| Size | 11 MB | 81 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zhejiang Huaruijie Technology CO.,LTD](https://appshunter.io/developer/1547428239) | [THE WATT STOPPER, INC.](https://appshunter.io/developer/1188479609) |

## What reviewers say

### OMA

[App page](https://appshunter.io/ios/app/oma-web/id6444197960)

**Features:** macOS Compatibility

**In-app purchases:** none


### Wattstopperi3

[App page](https://appshunter.io/ios/app/wattstopperi3/id6745227707)

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

**In-app purchases:** none


## Frequently asked questions

### Is OMA free?

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

### Is Wattstopperi3 free?

Wattstopperi3 is free to download, with no in-app purchases.

### Do OMA or Wattstopperi3 have ads?

Neither OMA nor Wattstopperi3 shows ads.

### Which is updated more often, OMA or Wattstopperi3?

OMA ships an update every 19 months, and Wattstopperi3 monthly. Most recently, OMA was updated on October 3, 2026 and Wattstopperi3 on October 13, 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.*