# Q vs OneQ

The clearest difference is in-app purchases: Q at none against OneQ's 1. Q also leads on iOS requirement (15.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. OneQ sells 1 one-off in-app purchase. Q asks for nothing beyond the download.

Q ships an update every 6 days, OneQ every 11 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Q | OneQ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 6 days** | Every 11 days |
| Size | 107 MB | 11 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Dong Hwan Choi](https://appshunter.io/developer/1760185617) | [Vinh Nguyen](https://appshunter.io/developer/1802304933) |

## What reviewers say

### Q

[App page](https://appshunter.io/ios/app/q-diary/id6590635808)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### OneQ

[App page](https://appshunter.io/ios/app/oneq-one-question-a-day/id6792615124)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OneQ Plus | $0.99 | one-time |


## Frequently asked questions

### Is Q free?

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

### Is OneQ free?

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

### Do Q or OneQ have ads?

Both Q and OneQ show ads.

### Which is updated more often, Q or OneQ?

Q ships an update every 6 days, and OneQ every 11 days. Most recently, Q was updated on October 25, 2026 and OneQ on October 24, 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.*