# RJ DataSMS vs MOBIL.CZ

RJ DataSMS and MOBIL.CZ are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

RJ DataSMS ships an update every 3 months, MOBIL.CZ every 2 months. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | RJ DataSMS | MOBIL.CZ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 31 MB | 159 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Student Agency, k. s.](https://appshunter.io/developer/706033018) | [T-Mobile Czech Republic a.s.](https://appshunter.io/developer/483686347) |

## What reviewers say

### RJ DataSMS

[App page](https://appshunter.io/ios/app/rj-datasms/id1488314121)

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

**In-app purchases:** none


### MOBIL.CZ

[App page](https://appshunter.io/ios/app/mobilcz/id1491420639)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RJ DataSMS free?

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

### Is MOBIL.CZ free?

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

### Do RJ DataSMS or MOBIL.CZ have ads?

Neither RJ DataSMS nor MOBIL.CZ shows ads.

### Which is updated more often, RJ DataSMS or MOBIL.CZ?

RJ DataSMS ships an update every 3 months, and MOBIL.CZ every 2 months. Most recently, RJ DataSMS was updated on October 6, 2026 and MOBIL.CZ on October 24, 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.*