# Block Puzzle Gem Blast vs PSI

The clearest difference is in-app purchases: Block Puzzle Gem Blast at none against PSI's 2. Block Puzzle Gem Blast also leads on device support (3 vs 1). PSI's advantage is ads (none vs shown). On price and iOS requirement there is nothing between them.

Both are free to download. PSI sells 2 in-app purchases, starting at $7.99 per month. Block Puzzle Gem Blast asks for nothing beyond the download.

## The numbers

| Metric | Block Puzzle Gem Blast | PSI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (3.5K ratings)](https://appshunter.io/ios/app/block-puzzle-gem-blast/id1577300311/reviews)** | — |
| Number of ratings | **3.5K** | — |
| Positive reviews | 92.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 154 MB | 137 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Never Old PTE. LTD.](https://appshunter.io/developer/1559524488) | [Collab168 Pty Ltd](https://appshunter.io/developer/6795792664) |

## What reviewers say

### Block Puzzle Gem Blast

[App page](https://appshunter.io/ios/app/block-puzzle-gem-blast/id1577300311)

This classic block puzzle game offers a relaxing yet challenging experience for all ages. Merge colorful gem blocks to clear rows and columns, aiming for high scores without time limits. It's perfect for brain training and passing the time, playable offline.

**Highlights:** Merge blocks to clear rows and columns, 8x8 board with colorful gem blocks, No time limit for strategic play, Offline play supported, Traditional combo gameplay for high scores, Brain training and IQ boosting

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

**In-app purchases:** none


### PSI

[App page](https://appshunter.io/ios/app/psi-esp-training/id6795792662)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PSI PRO - Monthly | $7.99 | per month |
| PSI PRO - Annual | $49.99 | per year |


## Frequently asked questions

### Is Block Puzzle Gem Blast free?

Block Puzzle Gem Blast is free to download, with no in-app purchases.

### Is PSI free?

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

### Do Block Puzzle Gem Blast or PSI have ads?

Block Puzzle Gem Blast shows ads; PSI does not.

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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.*