# O2 Car Control vs RJ DataSMS

O2 Car Control and RJ DataSMS 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.

O2 Car Control ships an update every 4 months, RJ DataSMS every 3 months. The most recent releases landed on October 19, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | O2 Car Control | RJ DataSMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Size | 47 MB | 31 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [O2 Czech Republic a.s.](https://appshunter.io/developer/311143795) | [Student Agency, k. s.](https://appshunter.io/developer/706033018) |

## What reviewers say

### O2 Car Control

[App page](https://appshunter.io/ios/app/o2-car-control/id512635003)

**Features:** Vision Pro support

**In-app purchases:** none


### RJ DataSMS

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

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

**In-app purchases:** none


## Frequently asked questions

### Is O2 Car Control free?

O2 Car Control is free to download, with no in-app purchases.

### Is RJ DataSMS free?

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

### Do O2 Car Control or RJ DataSMS have ads?

Neither O2 Car Control nor RJ DataSMS shows ads.

### Which is updated more often, O2 Car Control or RJ DataSMS?

O2 Car Control ships an update every 4 months, and RJ DataSMS every 3 months. Most recently, O2 Car Control was updated on October 19, 2026 and RJ DataSMS on October 6, 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.*