Marble vs Zdravo
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Marble
An interactive world designed to spark children's curiosity into learning through exploration, quests, and problem-solving. It adapts to their interests and learning levels, offering engaging challenges and real-world activity ideas.
- Interactive learning worlds
- Adaptive quests and challenges
- Parental progress reports
- Real-world activity suggestions
- COPPA compliant
- Designed for ages 6-12
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Marble is an interactive world that turns your kid's curiosity into learning. And it never feels like school. They explore worlds, take on quests, make things, solve problems and follow their questions wherever they lead: dinosaurs, space, drawing, music, storms, machines. Marble listens and adapts, so every adventure is built around what your kid cares about. (WHAT YOUR KID GETS) - A living world that grows with their interests and adapts to their level. No passive feed to scroll. - Quests where they build, create, and figure things out - A guide that never runs out of patience for the 677th "why?" question - Challenges that teach them to get stuck, try again, and win (WHAT YOU GET) - A daily note on what they explored and what they're learning - One connected map of their curiosity( skills, interests, breakthroughs) based on the US and UK curriculum standards - Ideas for real-world activities to keep the spark going off-screen - Valuable, active screen time. No passive mindless watching. (BUILT FOR CHILDHOOD) - Designed for kids ages 6β12 - No ads. No algorithmic feed. - COPPA compliant: parents create every account, we don't sell data, and you can review or delete your kid's information anytime - Made by parents who believe technology should be worthy of childhood (BETA) We're building Marble with our community. Join us to give us feedback and help us make Marble great for kids around the world. Questions? Ideas? Your kid would want to ride a whale to reach the next island? We read everything: support@withmarble.com
Zdravo
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Heading to Montenegro? Zdravo teaches you the essential words and phrases travellers actually use β greetings, ordering coffee and food, money, directions, small talk, and the polite bits in between. A STRUCTURED PLAN A 27-day study plan (~15 minutes a day) walks you from "zdravo" to confidently handling a restaurant bill, with weekly review days built in. Done your day? There's always more vocabulary waiting. LEARN IT YOUR WAY β’ Flashcards β flip, mark learned, review again, in either direction β’ Quiz β 10 quick questions on any topic β’ 260+ words in 24 travel categories, searchable, with rough phonetics β’ Real audio for every word, plus a prompt of the day β’ Daily reminders that double as mini practice prompts β’ A two-page grammar and pronunciation guide β only what a trip needs PRIVATE BY DESIGN No account, no ads, no tracking, nothing collected β and everything works offline, from the plane to the beach at Budva. SreΔan put β have a great trip!
Screenshots
Verdict
The clearest difference is iOS requirement: Zdravo at 16.0 against Marble's 26.0. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Marble | Zdravo |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 57.1% of reviews | β |
| Update frequency | Every 3 days | β |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | β |
| Devices | iPhone, iPad β better | iPhone |
| Requires iOS | 26.0 | 16.0 β better |
| Further details β not scored | ||
| Size | 849 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Generative Spark Inc | DINK Productions LLC |
In-app purchases
Marble
No in-app purchases
Zdravo
No in-app purchases









