# tSolar app vs Tarso

The clearest difference is update cadence: Tarso at every 2 months against tSolar app's every 21 months. tSolar app's advantage is device support (3 vs 1) and iOS requirement (9.0 vs 16.0). On price, ads and in-app purchases there is nothing between them.

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

tSolar app ships an update every 21 months, Tarso every 2 months. The most recent releases landed on September 16, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | tSolar app | Tarso |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 2 months** |
| Size | 47 MB | 46 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Toscano Linea Electronica SL](https://appshunter.io/developer/1170172273) | [Tarso-man SL](https://appshunter.io/developer/1728618368) |

## What reviewers say

### tSolar app

[App page](https://appshunter.io/ios/app/tsolar-app/id1464794767)

**Features:** macOS Compatibility

**In-app purchases:** none


### Tarso

[App page](https://appshunter.io/ios/app/tarso/id6477383482)

**In-app purchases:** none


## Frequently asked questions

### Is tSolar app free?

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

### Is Tarso free?

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

### Do tSolar app or Tarso have ads?

Neither tSolar app nor Tarso shows ads.

### Which is updated more often, tSolar app or Tarso?

tSolar app ships an update every 21 months, and Tarso every 2 months. Most recently, tSolar app was updated on September 16, 2026 and Tarso on September 9, 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.*