# Think_Think vs PSRIO

The clearest difference is price: PSRIO at Free against Think_Think's $4.99. PSRIO also leads on update cadence (every 3 days vs every 51 months) and iOS requirement (18.0 vs 26.0). Think_Think's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On ads there is nothing between them.

PSRIO is free to download; Think_Think costs $4.99 up front. PSRIO sells 1 in-app purchase, starting at $2.99 per month. Think_Think asks for nothing beyond the download.

Think_Think ships an update every 51 months, PSRIO every 3 days. The most recent releases landed on May 31, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Think_Think | PSRIO |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 51 months | **Every 3 days** |
| Size | 4 MB | 2 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Satoshi Sato](https://appshunter.io/developer/1043844101) | [Yoshinori Kobayashi](https://appshunter.io/developer/1828823227) |

## What reviewers say

### Think_Think

[App page](https://appshunter.io/ios/app/think-think/id1615723398)

**Features:** macOS Compatibility

**In-app purchases:** none


### PSRIO

[App page](https://appshunter.io/ios/app/psrio/id6749107911)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 保存期間（1ヶ月） | $2.99 | per month |


## Frequently asked questions

### Is Think_Think free?

Think_Think costs $4.99, with no in-app purchases.

### Is PSRIO free?

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

### Do Think_Think or PSRIO have ads?

Neither Think_Think nor PSRIO shows ads.

### Which is updated more often, Think_Think or PSRIO?

Think_Think ships an update every 51 months, and PSRIO every 3 days. Most recently, Think_Think was updated on May 31, 2026 and PSRIO on September 14, 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.*