# IPST Bio vs Schulte Grid

The clearest difference is ads: IPST Bio at none against Schulte Grid's shown. IPST Bio also leads on iOS requirement (6.0 vs 15.0). Schulte Grid's advantage is update cadence (every 4 days vs monthly). On price, 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.

IPST Bio ships an update monthly, Schulte Grid every 4 days. The most recent releases landed on October 4, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | IPST Bio | Schulte Grid |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 4 days** |
| Size | 279 MB | 58 MB |
| Requires iOS | **6.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Institute for the Promotion of Teaching Science and Technology (IPST)](https://appshunter.io/developer/643591471) | [余芳 伍](https://appshunter.io/developer/1229314116) |

## What reviewers say

### IPST Bio

[App page](https://appshunter.io/ios/app/ipst-bio/id1169409440)

**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 IPST Bio free?

IPST Bio 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 IPST Bio or Schulte Grid have ads?

Schulte Grid shows ads; IPST Bio does not.

### Which is updated more often, IPST Bio or Schulte Grid?

IPST Bio ships an update monthly, and Schulte Grid every 4 days. Most recently, IPST Bio was updated on October 4, 2026 and Schulte Grid on October 26, 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.*