# TPMS CN vs OhTPMS

The clearest difference is update cadence: TPMS CN at monthly against OhTPMS's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

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

TPMS CN ships an update monthly, OhTPMS every 3 months. The most recent releases landed on September 13, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | TPMS CN | OhTPMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Size | 100 MB | 102 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Xi'an Tonglu Car Electronics Co., Ltd](https://appshunter.io/developer/1756468712) | [Dajia Technology (Shenzhen) Co., Ltd.](https://appshunter.io/developer/1391476924) |

## What reviewers say

### TPMS CN

[App page](https://appshunter.io/ios/app/tpms-cn/id6529535145)

**Features:** macOS Compatibility

**In-app purchases:** none


### OhTPMS

[App page](https://appshunter.io/ios/app/ohtpms/id6738409904)

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

**In-app purchases:** none


## Frequently asked questions

### Is TPMS CN free?

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

### Is OhTPMS free?

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

### Do TPMS CN or OhTPMS have ads?

Neither TPMS CN nor OhTPMS shows ads.

### Which is updated more often, TPMS CN or OhTPMS?

TPMS CN ships an update monthly, and OhTPMS every 3 months. Most recently, TPMS CN was updated on September 13, 2026 and OhTPMS on September 10, 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.*