# HTD TPMS vs IMAR GPS 4G

The clearest difference is device support: HTD TPMS at 3 against IMAR GPS 4G's —. IMAR GPS 4G's advantage is iOS requirement (12.0 vs 15.5). On price 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.

## The numbers

| Metric | HTD TPMS | IMAR GPS 4G |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 5 weeks | — |
| Size | 38 MB | 23 MB |
| Requires iOS | 15.5 | **12.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [HTD Technology Develop JSC](https://appshunter.io/developer/1626804406) | [Van Quan Vu](https://appshunter.io/developer/1722415496) |

## What reviewers say

### HTD TPMS

[App page](https://appshunter.io/ios/app/htd-tpms/id6443782561)

**Features:** Vision Pro support

**In-app purchases:** none


### IMAR GPS 4G

[App page](https://appshunter.io/ios/app/imar-gps-4g/id6474726359)

**In-app purchases:** none


## Frequently asked questions

### Is HTD TPMS free?

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

### Is IMAR GPS 4G free?

IMAR GPS 4G is free to download, with no in-app purchases.

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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.*