Dev Q vs QBB Keeper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dev Q
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.
- Curated technical questions
- Clear answer explanations
- Covers CS, iOS, Android, Frontend
- Weekly content updates
- Ideal for on-the-go learning
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Dev Q: Tech Interview Prep Made Simple Dev Q helps you master key technical questions for developer interviews — across CS, iOS, aOS, and Frontend. Whether you’re preparing last minute or reviewing on the go, Dev Q has you covered. • Curated questions & clear answers • Covers CS, iOS, aOS, and Frontend • Weekly updates to keep content fresh • Perfect for commute, breaks, and pre-interview reviews Ace your next interview — with Dev Q.
QBB Keeper
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QBB Keeper은 비밀번호 생성, 저장 및 관리를 지원하는 비밀번호 관리 애플리케이션입니다. 사용자는 계정 정보와 비밀번호를 안전하게 저장하고 관리할 수 있으며, 강력한 비밀번호를 생성하여 보안을 강화할 수 있습니다. 직관적인 인터페이스를 통해 비밀번호를 효율적으로 관리할 수 있으며, 계정 보안을 위한 다양한 기능을 제공합니다. 주요 기능: 비밀번호 생성 비밀번호 저장 및 관리 계정 정보 관리 보안 강화를 위한 관리 기능 QBB Keeper은 사용자의 계정과 비밀번호를 보다 안전하게 관리할 수 있도록 지원합니다.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Dev Q | QBB Keeper |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 months | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 18 MB | 27 MB |
| Age rating | 4+ | 17+ |
| Developer | jaesung Lee | QBB Live Co., LTD. |
In-app purchases
Dev Q
No in-app purchases
QBB Keeper
No in-app purchases
