# OTiS Mobile vs MESPAS TSM

The clearest difference is iOS requirement: OTiS Mobile at 8.0 against MESPAS TSM's 15.0. On price, update cadence, 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.

OTiS Mobile ships an update every 4 months, MESPAS TSM every 2 months. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | OTiS Mobile | MESPAS TSM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 71 MB | 71 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [StratumFive](https://appshunter.io/developer/886642287) | [MESPAS AG](https://appshunter.io/developer/1073594128) |

## What reviewers say

### OTiS Mobile

[App page](https://appshunter.io/ios/app/otis-mobile/id886642284)

**Features:** macOS Compatibility

**In-app purchases:** none


### MESPAS TSM

[App page](https://appshunter.io/ios/app/mespas-tsm/id1598358369)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OTiS Mobile free?

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

### Is MESPAS TSM free?

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

### Do OTiS Mobile or MESPAS TSM have ads?

Neither OTiS Mobile nor MESPAS TSM shows ads.

### Which is updated more often, OTiS Mobile or MESPAS TSM?

OTiS Mobile ships an update every 4 months, and MESPAS TSM every 2 months. Most recently, OTiS Mobile was updated on September 23, 2026 and MESPAS TSM on September 17, 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.*