# IPST Bio vs Othello レトロー

The clearest difference is in-app purchases: IPST Bio at none against Othello レトロー's 1. IPST Bio also leads on ads (none vs shown) and iOS requirement (6.0 vs 13.0). Othello レトロー's advantage is update cadence (every 4 days vs monthly). On price and device support there is nothing between them.

Both are free to download. Othello レトロー sells 1 one-off in-app purchase. IPST Bio asks for nothing beyond the download.

IPST Bio ships an update monthly, Othello レトロー every 4 days. Both last shipped on October 4, 2026.

## The numbers

| Metric | IPST Bio | Othello レトロー |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (4 ratings)](https://appshunter.io/ios/app/othello/id1667212191/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 279 MB | 11 MB |
| Requires iOS | **6.0** | 13.0 |
| 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) | [Sirawat Pulsree](https://appshunter.io/developer/573587995) |

## What reviewers say

### IPST Bio

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Othello レトロー

[App page](https://appshunter.io/ios/app/othello/id1667212191)

Experience the classic strategy game with an 80s retro aesthetic. Enjoy multiple AI difficulty levels and choose between 2D and 3D visual perspectives. Perfect for quick matches or in-depth play.

**Highlights:** 80s retro style graphics, Multiple AI difficulty levels, 2D and 3D view options, Classic strategy gameplay

**Features:** macOS Compatibility

**In-app purchases (1)**

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


## Frequently asked questions

### Is IPST Bio free?

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

### Is Othello レトロー free?

Othello レトロー is free to download, with in-app purchases available.

### Do IPST Bio or Othello レトロー have ads?

Othello レトロー shows ads; IPST Bio does not.

### Which is updated more often, IPST Bio or Othello レトロー?

IPST Bio ships an update monthly, and Othello レトロー every 4 days. Most recently, IPST Bio was updated on October 4, 2026 and Othello レトロー on October 4, 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.*