# PowerMaster vs otsora

The clearest difference is in-app purchases: PowerMaster at none against otsora's 1. PowerMaster also leads on iOS requirement (12.0 vs 18.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. otsora sells 1 in-app purchase, starting at $12.00 per month. PowerMaster asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 11, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | PowerMaster | otsora |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Size | 52 MB | 2 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Cyber Energy Co., Ltd.](https://appshunter.io/developer/1463752550) | [sirajuddin sirajuddin](https://appshunter.io/developer/6773828276) |

## What reviewers say

### PowerMaster

[App page](https://appshunter.io/ios/app/powermaster/id1463752551)

**Features:** macOS Compatibility

**In-app purchases:** none


### otsora

[App page](https://appshunter.io/ios/app/otsora/id6773828274)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| cable pro | $12.00 | per month |


## Frequently asked questions

### Is PowerMaster free?

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

### Is otsora free?

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

### Do PowerMaster or otsora have ads?

Neither PowerMaster nor otsora shows ads.

### Which is updated more often, PowerMaster or otsora?

PowerMaster ships an update every 4 months, and otsora every 4 months. Most recently, PowerMaster was updated on October 11, 2026 and otsora on October 25, 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.*