# Tire Size Calculator vs ISPBox

The clearest difference is update cadence: ISPBox at every 2 months against Tire Size Calculator's every 14 months. Tire Size Calculator's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.4). On price, 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.

Tire Size Calculator ships an update every 14 months, ISPBox every 2 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Tire Size Calculator | ISPBox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.1 (7 ratings)](https://appshunter.io/ios/app/tire-size-calculator-upsize/id1590813057/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 30 MB | 47 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Gorasiya Vishal Nanjibhai](https://appshunter.io/developer/1287086933) | [Karol Labuda](https://appshunter.io/developer/1792205828) |

## What reviewers say

### Tire Size Calculator

[App page](https://appshunter.io/ios/app/tire-size-calculator-upsize/id1590813057)

Calculate and compare tire sizes for your vehicle. This tool helps you understand the impact of different tire dimensions on performance and ensures your speedometer remains accurate after upgrades. It's designed for automotive enthusiasts and anyone looking to optimize their vehicle's setup.

**Highlights:** Accurate tire size calculations, Aspect ratio adjustments, Speedometer correction, Tire size comparison tool, User-friendly interface, Save and share configurations

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

**In-app purchases:** none


### ISPBox

[App page](https://appshunter.io/ios/app/ispbox/id6789878713)

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

**In-app purchases:** none


## Frequently asked questions

### Is Tire Size Calculator free?

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

### Is ISPBox free?

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

### Do Tire Size Calculator or ISPBox have ads?

Neither Tire Size Calculator nor ISPBox shows ads.

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

Tire Size Calculator ships an update every 14 months, and ISPBox every 2 months. Most recently, Tire Size Calculator was updated on October 24, 2026 and ISPBox on October 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.*