# u vs respon

The clearest difference is in-app purchases: respon at none against u's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. u sells 2 one-off in-app purchases. respon asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 months. Both last shipped on October 9, 2026.

## The numbers

| Metric | u | respon |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 10.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 16 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Asahipress Co., Ltd.](https://appshunter.io/developer/465908709) | [respon, Inc.](https://appshunter.io/developer/1441360548) |

## What reviewers say

### u

[App page](https://appshunter.io/ios/app/u-cat/id537137825)

This app offers English language learning with personalized weak point training based on simulated tests. It provides detailed analysis and adaptive learning paths to improve scores for all levels. It can be used on smartphones and synced with a PC for a comprehensive study experience.

**Highlights:** Simulated English tests, Personalized weak point analysis, Adaptive learning paths, Score and detailed report generation, PC synchronization, Offline test interruption and restart

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TOEIC標準模試＋ | $26.99 | one-time |
| TOEIC標準模試＋ | $33.99 | one-time |


### respon

[App page](https://appshunter.io/ios/app/respon/id966831550)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is u free?

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

### Is respon free?

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

### Do u or respon have ads?

Neither u nor respon shows ads.

### Which is updated more often, u or respon?

u ships an update every 3 months, and respon every 3 months. Most recently, u was updated on October 9, 2026 and respon on October 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*