# Tire Sizes vs Sudn' Impact

The clearest difference is in-app purchases: Sudn' Impact at none against Tire Sizes's 1. Sudn' Impact also leads on update cadence (weekly vs every 6 weeks) and iOS requirement (15.6 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Tire Sizes sells 1 one-off in-app purchase. Sudn' Impact asks for nothing beyond the download.

Tire Sizes ships an update every 6 weeks, Sudn' Impact weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Tire Sizes | Sudn' Impact |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (82 ratings)](https://appshunter.io/ios/app/tire-sizes/id6743722834/reviews)** | — |
| Number of ratings | **82** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 17 MB | 16 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zaven Hovhannisyan](https://appshunter.io/developer/1804196073) | [Dayat Enterprises, INC](https://appshunter.io/developer/1092803122) |

## What reviewers say

### Tire Sizes

[App page](https://appshunter.io/ios/app/tire-sizes/id6743722834)

Find essential tire dimensions and receive suggestions for new tire sizes. Compare wheels visually and by specifications like offset and width. Discover factory tire sizes for your car and compare motorcycle tires across different measurement systems.

**Highlights:** Tire dimension calculations, New tire size suggestions, Wheel comparison (visual and specs), Offset and width comparison, Motorcycle tire comparison, Factory tire size lookup

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


### Sudn' Impact

[App page](https://appshunter.io/ios/app/sudn-impact/id6791570826)

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

**In-app purchases:** none


## Frequently asked questions

### Is Tire Sizes free?

Tire Sizes is free to download, with in-app purchases available.

### Is Sudn' Impact free?

Sudn' Impact is free to download, with no in-app purchases.

### Do Tire Sizes or Sudn' Impact have ads?

Neither Tire Sizes nor Sudn' Impact shows ads.

### Which is updated more often, Tire Sizes or Sudn' Impact?

Tire Sizes ships an update every 6 weeks, and Sudn' Impact weekly. Most recently, Tire Sizes was updated on October 30, 2026 and Sudn' Impact on October 31, 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.*