# F6Tech vs Tire Size Calculator +

The clearest difference is ads: F6Tech at none against Tire Size Calculator +'s shown. F6Tech also leads on iOS requirement (11.0 vs 16.4). Tire Size Calculator +'s advantage is update cadence (every 2 weeks vs every 3 months). On price, 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.

F6Tech ships an update every 3 months, Tire Size Calculator + every 2 weeks. The most recent releases landed on October 8, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | F6Tech | Tire Size Calculator + |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 49 MB | 49 MB |
| Requires iOS | **11.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Nanjing F6 Automobile Technology Co.,Ltd.](https://appshunter.io/developer/1456599647) | [heekyung moon](https://appshunter.io/developer/6779193748) |

## What reviewers say

### F6Tech

[App page](https://appshunter.io/ios/app/f6tech/id6749342232)

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

**In-app purchases:** none


### Tire Size Calculator +

[App page](https://appshunter.io/ios/app/tire-size-calculator-plus/id6790019544)

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

**In-app purchases:** none


## Frequently asked questions

### Is F6Tech free?

F6Tech is free to download, with no in-app purchases.

### Is Tire Size Calculator + free?

Tire Size Calculator + is free to download, with no in-app purchases.

### Do F6Tech or Tire Size Calculator + have ads?

Tire Size Calculator + shows ads; F6Tech does not.

### Which is updated more often, F6Tech or Tire Size Calculator +?

F6Tech ships an update every 3 months, and Tire Size Calculator + every 2 weeks. Most recently, F6Tech was updated on October 8, 2026 and Tire Size Calculator + on October 23, 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.*