# Dev Q vs QBB Keeper

The clearest difference is update cadence: QBB Keeper at every 8 days against Dev Q's every 6 months. QBB Keeper also leads on iOS requirement (13.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Dev Q ships an update every 6 months, QBB Keeper every 8 days. Both last shipped on October 13, 2026.

## The numbers

| Metric | Dev Q | QBB Keeper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dev-q/id1571533603/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 8 days** |
| Monetization | Free | — |
| Size | 18 MB | 27 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [jaesung Lee](https://appshunter.io/developer/906348091) | [QBB Live Co., LTD.](https://appshunter.io/developer/1875528512) |

## What reviewers say

### Dev Q

[App page](https://appshunter.io/ios/app/dev-q/id1571533603)

Prepare for technical developer interviews with curated questions and clear answers across CS, iOS, Android, and Frontend topics. Get weekly updates to keep your knowledge fresh for last-minute reviews or on-the-go studying.

**Highlights:** Curated technical questions, Clear answer explanations, Covers CS, iOS, Android, Frontend, Weekly content updates, Ideal for on-the-go learning

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

**In-app purchases:** none


### QBB Keeper

[App page](https://appshunter.io/ios/app/qbb-keeper/id6758886444)

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

**In-app purchases:** none


## Frequently asked questions

### Is Dev Q free?

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

### Is QBB Keeper free?

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

### Do Dev Q or QBB Keeper have ads?

Neither Dev Q nor QBB Keeper shows ads.

### Which is updated more often, Dev Q or QBB Keeper?

Dev Q ships an update every 6 months, and QBB Keeper every 8 days. Most recently, Dev Q was updated on October 13, 2026 and QBB Keeper on October 13, 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.*