# 3RHO vs TSA

The clearest difference is ads: TSA at none against 3RHO's shown. TSA also leads on update cadence (every 3 months vs every 9 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

3RHO ships an update every 9 months, TSA every 3 months. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 3RHO | TSA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 3 months** |
| Size | 63 MB | 101 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [3-RHO INTERRUPTORES AUTOMOTIVOS LTDA](https://appshunter.io/developer/1458872623) | [TSA](https://appshunter.io/developer/1538431806) |

## What reviewers say

### 3RHO

[App page](https://appshunter.io/ios/app/3rho-catalogo/id1458872624)

**Features:** macOS Compatibility

**In-app purchases:** none


### TSA

[App page](https://appshunter.io/ios/app/tsa/id1538431624)

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

**In-app purchases:** none


## Frequently asked questions

### Is 3RHO free?

3RHO is free to download, with no in-app purchases.

### Is TSA free?

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

### Do 3RHO or TSA have ads?

3RHO shows ads; TSA does not.

### Which is updated more often, 3RHO or TSA?

3RHO ships an update every 9 months, and TSA every 3 months. Most recently, 3RHO was updated on October 26, 2026 and TSA on October 29, 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.*