# JM vs CarManager

The clearest difference is ads: JM at none against CarManager's shown. JM also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.2). On price, update cadence 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.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 20, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | JM | CarManager |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Monthly | Monthly |
| Size | 18 MB | 4 MB |
| Requires iOS | **13.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Japan Radio Co.,Ltd.](https://appshunter.io/developer/932220259) | [Ayako Asayama](https://appshunter.io/developer/1702795563) |

## What reviewers say

### JM

[App page](https://appshunter.io/ios/app/jm-watcher/id932220260)

**In-app purchases:** none


### CarManager

[App page](https://appshunter.io/ios/app/carmanager-easy-car-tracking/id6756239760)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is JM free?

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

### Is CarManager free?

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

### Do JM or CarManager have ads?

CarManager shows ads; JM does not.

### Which is updated more often, JM or CarManager?

JM ships an update monthly, and CarManager monthly. Most recently, JM was updated on October 20, 2026 and CarManager on October 28, 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.*