Dussmann Link vs Block Door Study
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dussmann Link
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Dussmann Service is a global facility management specialist providing cleaning services, technical services, security and office support in the Middle East and in many countries across the world.
Block Door Study
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Block Door Study helps you build and organize personal flashcard decks for everyday learning. Create cards, review material, test yourself, and monitor study progress with clear statistics and flexible review tools. Visual tower progression rewards consistent study as successful review sessions unlock new doors and complete knowledge floors. Personal tags, archive, mini quizzes, manual difficulty, and local progress tracking create a focused study experience while keeping all information stored on your device
Screenshots
Verdict
The clearest difference is ads: Dussmann Link at none against Block Door Study's shown. Dussmann Link also leads on iOS requirement (10.0 vs 17.0). Block Door Study's advantage is update cadence (every 2 weeks vs every 9 months). On price, 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.
Dussmann Link ships an update every 9 months, Block Door Study every 2 weeks. The most recent releases landed on September 28, 2026 and September 17, 2026 respectively.
| Parameter | Dussmann Link | Block Door Study |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 10.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 176 MB | 4 MB |
| Age rating | 4+ | 17+ |
| Developer | Ildefonso Almario | Ryan Sullivan |
In-app purchases
Dussmann Link
No in-app purchases
Block Door Study
No in-app purchases
Questions
Is Dussmann Link free?
Is Block Door Study free?
Do Dussmann Link or Block Door Study have ads?
Which is updated more often, Dussmann Link or Block Door Study?
Other comparisons
