OceanTree vs こどもずかん Kids' Encyclopedia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OceanTree
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OceanTree - Learn, Play, and Explore Help your little ones discover the joy of learning with OceanTree, an interactive educational app designed to inspire curiosity, creativity, and early development. Through word lessons, picture quizzes, playful math, colour activities, flashcards, and illustrated stories, children can build vocabulary, practise thinking skills, and enjoy meaningful learning in a safe, child-friendly environment. Key Features 1. Word Learning for Early Literacy Build your child’s vocabulary through fun, spoken lessons. Learn everyday words with colourful pictures and clear audio Practise new words in short, simple sentences Help children recognise, remember, and use language naturally 2. Playful Quizzes Make learning feel like a game. Answer picture and word questions by tapping the right choice Explore animals, numbers, nature, safety, and more Build focus, memory, matching, and problem-solving skills 3. Early Math Practice Turn numbers into play. Count, compare, add, and subtract with pictures and simple puzzles Learn through tap, match, and fill-in activities — not worksheets Grow number sense at a gentle, child-friendly pace 4. Colour Discovery Explore the world of colour. Recognise, name, and match colours with bright pictures Connect colours to familiar objects children see every day Strengthen observation and visual learning through play 5. Picture Flashcards Learn new things one card at a time. Browse themed decks such as animals, food, objects, and more See a clear picture and hear the word spoken aloud Build recognition skills with short, repeatable practice 6. Imaginative Stories for Children Encourage creativity and language through storytelling. Enjoy illustrated stories with lovable characters Improve listening skills and comprehension Inspire imagination, kindness, and emotional learning 7. Report Issues Easily Help us improve OceanTree with your feedback. Found an incorrect answer, image, audio, or activity issue? Report problems directly from the app Help us continuously improve learning content quality 8. Engaging and Child-Friendly Design Designed for young learners. Large buttons and simple navigation Bright, cheerful visuals Easy for children to explore independently or with parents 9. Safe and Ad-Free Learning Environment A peaceful place for children to learn and explore. No distracting advertisements Kid-friendly educational content Safe activities designed for preschool and early learners 10. Learn Anytime, Anywhere Turn everyday moments into learning opportunities. Practise at home or while travelling Build consistent learning habits through fun activities Explore new lessons whenever your child wants to learn Why Families Love OceanTree Combines words, quizzes, math, colour, flashcards, and stories in one app Supports visual, audio, and interactive learning Helps develop vocabulary, number sense, memory, and thinking skills Designed for preschool and early learners Continuously improved with new content and activities OceanTree turns everyday moments into opportunities to learn, play, and grow — helping children build a strong foundation for their future. Customer Email: hello@kidpify.com Privacy Policy: https://www.kidpify.com/privacy Terms and Conditions: https://www.kidpify.com/terms
こどもずかん Kids' Encyclopedia
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A first picture encyclopedia for little vehicle fans. Trains, bullet trains, fire trucks, planes, ships, rockets, and more — about 50 vehicles, each with a big picture and a simple description. BIG PICTURES TO LOOK AT Explore the shapes and colors of each vehicle in big, photo-like pictures, full screen on iPhone and iPad. CAN'T READ YET? JUST LISTEN Tap a button to hear the name and description read aloud, so kids who can't read yet can enjoy it too. SPEED, LENGTH, AND PASSENGERS Each vehicle shows its speed, its length, and how many people it carries, so kids can compare vehicles. ENGLISH AND JAPANESE Switch between English and Japanese anytime. The name in the other language is shown too, so kids can learn both. In Japanese, choose hiragana only, hiragana and katakana, or hiragana, katakana, and kanji. COLLECT FAVORITES Tap the heart, and the vehicle moves to the top of the list. JUMP TO ANY GROUP Book-style index tabs take kids to trains, cars, planes, and more with one tap. FOR GROWN-UPS - No ads. No tracking or analytics. - Settings open with a long press, and purchases sit behind a math-problem parental gate, so kids can't buy anything by accident. - The app is free, and some vehicles are free to view. To see every vehicle, buy the Vehicles book with an In-App Purchase. It's a one-time purchase, not a subscription. - Family Sharing is supported. - The text and pictures were generated with AI, and some details may differ from real vehicles. Check the facts together in books or by seeing vehicles in person. - Pictures are downloaded from the internet and saved on the device after they are shown. Terms of Use - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy - https://rainbow-of-apps.web.app/app/kids_zukan/privacy_policy
Screenshots
Verdict
OceanTree and こどもずかん Kids' Encyclopedia are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. OceanTree sells 2 in-app purchases, starting at $2.49 per month and こどもずかん Kids' Encyclopedia sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
OceanTree ships an update every 2 months, こどもずかん Kids' Encyclopedia monthly. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.
| Parameter | OceanTree | こどもずかん Kids' Encyclopedia |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.6 |
| Further details — not scored | ||
| Size | 75 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Win Hlaing Tun | Noriaki Togashi |
In-app purchases
OceanTree
- Monthly Subscription$2.491 Month
- Yearly Subscription$14.991 Year
こどもずかん Kids' Encyclopedia
- Vehicles: Full Book$2.99
Questions
Is OceanTree free?
Is こどもずかん Kids' Encyclopedia free?
Do OceanTree or こどもずかん Kids' Encyclopedia have ads?
Which is updated more often, OceanTree or こどもずかん Kids' Encyclopedia?
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