# Gem Factory! vs Blitz Speed

The clearest difference is in-app purchases: Gem Factory! at none against Blitz Speed's 1. Gem Factory! also leads on update cadence (every 2 days vs every 2 weeks) and iOS requirement (14.5 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Blitz Speed sells 1 one-off in-app purchase. Gem Factory! asks for nothing beyond the download.

Gem Factory! ships an update every 2 days, Blitz Speed every 2 weeks. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Gem Factory! | Blitz Speed |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Size | 117 MB | 9 MB |
| Requires iOS | **14.5** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nebih Basaran](https://appshunter.io/developer/1586973680) | [SHOTARO TAKAHASHI](https://appshunter.io/developer/6777748605) |

## What reviewers say

### Gem Factory!

[App page](https://appshunter.io/ios/app/gem-factory/id6785407819)

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

**In-app purchases:** none


### Blitz Speed

[App page](https://appshunter.io/ios/app/blitz-speed/id6794324543)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Gem Factory! free?

Gem Factory! is free to download, with no in-app purchases.

### Is Blitz Speed free?

Blitz Speed is free to download, with in-app purchases available.

### Do Gem Factory! or Blitz Speed have ads?

Both Gem Factory! and Blitz Speed show ads.

### Which is updated more often, Gem Factory! or Blitz Speed?

Gem Factory! ships an update every 2 days, and Blitz Speed every 2 weeks. Most recently, Gem Factory! was updated on October 9, 2026 and Blitz Speed on October 15, 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.*