# PG Blanket Memory vs Schulte Grid

The clearest difference is update cadence: Schulte Grid at every 4 days against PG Blanket Memory's every 9 days. PG Blanket Memory's advantage is iOS requirement (13.0 vs 15.0). On price, ads, 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.

PG Blanket Memory ships an update every 9 days, Schulte Grid every 4 days. The most recent releases landed on November 9, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | PG Blanket Memory | Schulte Grid |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 9 days | **Every 4 days** |
| Size | 20 MB | 58 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Celtic Wards, LLC](https://appshunter.io/developer/1219544143) | [余芳 伍](https://appshunter.io/developer/1229314116) |

## What reviewers say

### PG Blanket Memory

[App page](https://appshunter.io/ios/app/pg-blanket-memory/id6755336011)

**Features:** macOS Compatibility

**In-app purchases:** none


### Schulte Grid

[App page](https://appshunter.io/ios/app/schulte-grid-brain-training/id6810313541)

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

**In-app purchases:** none


## Frequently asked questions

### Is PG Blanket Memory free?

PG Blanket Memory is free to download, with no in-app purchases.

### Is Schulte Grid free?

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

### Do PG Blanket Memory or Schulte Grid have ads?

Both PG Blanket Memory and Schulte Grid show ads.

### Which is updated more often, PG Blanket Memory or Schulte Grid?

PG Blanket Memory ships an update every 9 days, and Schulte Grid every 4 days. Most recently, PG Blanket Memory was updated on November 9, 2026 and Schulte Grid on November 6, 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.*