# IPST Bio vs Decipher

The clearest difference is in-app purchases: IPST Bio at none against Decipher's 4. IPST Bio also leads on ads (none vs shown) and iOS requirement (6.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Decipher sells 4 in-app purchases, starting at $9.99 per month. IPST Bio asks for nothing beyond the download.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 4, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | IPST Bio | Decipher |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (4 ratings)](https://appshunter.io/ios/app/decipher-brain-test/id6743929289/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 279 MB | 149 MB |
| Requires iOS | **6.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [The Institute for the Promotion of Teaching Science and Technology (IPST)](https://appshunter.io/developer/643591471) | [Gamehouse LLC](https://appshunter.io/developer/284837569) |

## What reviewers say

### IPST Bio

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Decipher

[App page](https://appshunter.io/ios/app/decipher-brain-test/id6743929289)

Engage in a relaxing yet challenging puzzle game with a sci-fi theme. Rotate and align interconnected rings to solve intricate puzzles. Offers a pressure-free experience with evolving mechanics and a calming atmosphere.

**Highlights:** Physics-based ring rotation puzzles, 250 handcrafted puzzles, No timers or pressure, Calming abstract visuals, Color-blind mode and haptics, Evolving puzzle mechanics

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GameHouse Subscription Monthly | $9.99 | per month |
| GameHouse Subscription Monthly | $9.99 | per month |
| GameHouse Subscription Yearly | $89.99 | per year |
| GameHouse Subscription Yearly | $89.99 | per year |


## Frequently asked questions

### Is IPST Bio free?

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

### Is Decipher free?

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

### Do IPST Bio or Decipher have ads?

Decipher shows ads; IPST Bio does not.

### Which is updated more often, IPST Bio or Decipher?

IPST Bio ships an update monthly, and Decipher monthly. Most recently, IPST Bio was updated on October 4, 2026 and Decipher on September 29, 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.*