Flippy vs Boo World
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flippy
This app uses smart algorithms and ARKit to help you learn languages and facts more effectively. It offers personalized learning sessions, intuitive flashcard interaction, and smart reminders to reinforce your knowledge.
- Generated personalized learning sessions
- Intuitive swipe-based flashcard interface
- ARKit eye-tracking for focus (select devices)
- Import or create custom flashcards
- Smart spaced repetition reminders
- Leitner system algorithm
- Detailed progress statistics
Read full descriptionHide full description
Flippy is the flashcard app that brings cards back exactly when you're about to forget them. Learn less. Remember more. A STAGE, NOT A FORM Your decks live on a wallet of passes in front of a photo stage — chalkboard, water, sunset, chemistry, space, or your own photo. Glass navigation, paper cards, serif type. Dark, calm, focused. SPACED REPETITION THAT ACTUALLY THINKS Grade every card Again, Hard, Good or Easy. Each card keeps its own ease, its interval stretches as you remember, and a daily session picks what's due plus a few new cards. Memory-strength rings show what's fading. Leeches are flagged before they eat your time. Undo any answer. EIGHT WAYS TO LEARN Today's session · Quick 10 · New cards · Hardest cards · Reverse · Quiz · Write · Match · Cram. Deselect topics you don't want right now. Every session starts with a 3-2-1 countdown and your settings right there. QUIZ — POWERED BY APPLE INTELLIGENCE Multiple-choice distractors are written on device: plausible, same style, same topic, never the correct answer paraphrased. Match spreads pairs across the whole screen and races the clock. Write forgives typos. SCAN DOCUMENTS & SLIDES INTO CARDS Photograph pages with the document camera or drop in PDF slides and images. Text is recognized on device, then Apple Intelligence drafts your cards — long slide decks are split into chunks automatically. BRING YOUR CARDS Import Anki decks (.apkg, with images and subdecks), Anki text, Quizlet and Flashcard Hero exports (.flashcards, with images and topics), CSV and TSV. Export any deck or topic as a .flippy file with everything inside — text, photos, drawings, LaTeX and your learning progress. RICH CARDS Photos, PencilKit drawings, LaTeX formulas, cloze deletions, read-aloud in the card's language, scrollable long content. WIDGETS EVERYWHERE Today pass with goal ring and streak · interactive flashcard widget (flip and grade on the Home Screen) · streak & week · 14-day forecast · deck passes · learning modes · Lock Screen and Apple Watch complications · Control Center: start a session or mute today's reminder · a Live Activity keeps your session on the Lock Screen and in the Dynamic Island. STATISTICS THAT MOTIVATE Learning score, accuracy and volume trends, activity heatmap, hour × weekday grid, Leitner boxes, memory-strength buckets, forecast, deck health, records and insights — for the week, month, 90 days or the year. YOUR DATA STAYS YOURS No server, no account. Sync through your own iCloud. A trash keeps deleted decks, topics and cards for 30 days. FREE VS. PREMIUM Free: 2 decks with 2 topics and 40 cards each, every learning mode, statistics, import and export. Premium: unlimited decks, topics and cards, Apple Intelligence card sets, iCloud sync across your devices, every wallpaper and tint — and you support an independent developer. Family Sharing for up to five people. Privacy: https://kevinreutter.online/privacy-flippy Terms: https://kevinreutter.online/terms-and-conditions/
Boo World
Read full descriptionHide full description
Welcome to Boo World — a gentle, playful world made for little explorers. Join Boo, a curious little friend, and start in the kitchen: sort fruits and vegetables into bowls and baskets, set the table, wash and cook simple dishes across 116 step-by-step stages. Boo names every food out loud in English, Russian, Uzbek or Kazakh, so children pick up words while they play. New places in Boo World are on the way, and every update adds more to explore. Boo World is designed especially for toddlers and preschoolers, with simple interactions that children can understand through play. WHAT KIDS CAN DO • Explore Boo's colorful world • Play simple drag-and-drop activities • Listen to Boo say the word, then find it • Match foods by kind and colour • Discover the kitchen, with new places on the way • Earn stars for every finished level • Enjoy gentle animations, sounds, and character reactions MADE FOR LITTLE HANDS Boo World uses large interactive objects, simple gestures, and minimal text. There are no complicated menus, no countdown timers, no leaderboards, and no stressful challenges. A CALMER KIND OF SCREEN TIME Boo encourages curiosity and exploration without punishing mistakes. If something doesn’t work, children can simply try again and keep playing. BUILT WITH FAMILIES IN MIND • No ads in the children’s experience • No chat or social features • No strangers or user-generated content • Parent-protected settings and purchases • Child-friendly controls Boo World is just beginning. New places, activities, and little adventures can be added over time. Come explore with Boo! Boo World Premium unlocks every level in every place and all future content. Plans: monthly $4.99, yearly $29.99 with a 7-day free trial, or a one-time Forever purchase $59.99 (prices vary by region). Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period in your Apple ID settings. Privacy Policy: https://mirzaev.uz/apps/booworld/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is device support: Flippy at 6 against Boo World's 2. Boo World's advantage is iOS requirement (15.0 vs 26.0). On price, update cadence, ads and in-app purchases 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. Flippy sells 10 in-app purchases, starting at $2.99 per 3 months and Boo World sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Flippy ships an update every 9 days, Boo World every 6 days. The most recent releases landed on November 7, 2026 and October 29, 2026 respectively.
| Parameter | Flippy | Boo World |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (20 ratings) — better | — |
| Positive reviews | 59.3% of reviews | — |
| Number of ratings | 20 — better | — |
| Update frequency | Every 9 days | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro — better | iPhone, iPod |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 107 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Kevin Reutter | Ahrorbek Mirzaev |
In-app purchases
Flippy
- Premium - 3 Months$2.993 Months
- Flippy+ 3 Months$3.993 Months
- Premium Monthly$3.991 Month
Show 5 moreShow fewer
- Family Flippy+ 3 Months$6.993 Months
- Premium - Annual7 Days trial$7.991 Year
- PremiumAnnualOffering$9.991 Year
- Flippy+ Annual$24.991 Year
- Family Flippy+ (Annual)7 Days trial$39.991 Year
- Flippy+ Lifetime$59.99
- Family Flippy+ Lifetime$99.99
Boo World
- Premium Monthly$4.991 Month
- Premium Yearly7 Days trial$29.991 Year
- Premium Forever$59.99









