# TPMS Chart vs 1

The clearest difference is iOS requirement: 1 at 12.0 against TPMS Chart's 15.6. On price, update cadence, ads 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.

TPMS Chart ships an update every 3 weeks, 1 every 2 weeks. The most recent releases landed on September 19, 2026 and August 26, 2026 respectively.

## The numbers

| Metric | TPMS Chart | 1 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 52 MB | 46 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [SYSGRATION](https://appshunter.io/developer/833548921) | [Ningbo Ruicheng Automobile Co., Ltd.](https://appshunter.io/developer/1840822372) |

## What reviewers say

### TPMS Chart

[App page](https://appshunter.io/ios/app/tpms-chart/id1468856989)

**In-app purchases:** none


### 1

[App page](https://appshunter.io/ios/app/1-one-direct/id6752764420)

This utility app helps users monitor and program tire pressure sensors for automobiles. It focuses on detecting current tire pressure and enabling the programming of new sensors.

**Highlights:** Detect tire pressure, Program tire pressure sensors, Automobile utility, Sensor management

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

**In-app purchases:** none


## Frequently asked questions

### Is TPMS Chart free?

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

### Is 1 free?

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

### Do TPMS Chart or 1 have ads?

Neither TPMS Chart nor 1 shows ads.

### Which is updated more often, TPMS Chart or 1?

TPMS Chart ships an update every 3 weeks, and 1 every 2 weeks. Most recently, TPMS Chart was updated on September 19, 2026 and 1 on August 26, 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.*