Planbook Mobile vs Arena by flashcardaudit.com
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Planbook Mobile
This is a comprehensive online lesson planning tool designed for educators. It offers a wide array of features, meticulous student learning standards, and excellent support. A free trial is available to experience its capabilities.
- Comprehensive lesson planning
- Meticulous student learning standards
- Extensive features for educators
- Outstanding support and tutorials
- Continuous improvement based on feedback
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Welcome to Planbook! With over one million teachers and one billion lessons, Planbook is the established leader in online lesson planning! Why is Planbook preferred by educators? * We offer the most features for teachers and schools * At $20 per year, we offer the best value on the market * Outstanding support plus knowledge base and tutorials * Our student learning standards are meticulous * Our product is always improving thanks to educator feedback Download and take advantage of our 90 day free trial!
Arena by flashcardaudit.com
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One challenge a day. That is the whole ask. Arena is not a study app. It is how you find out whether your studying worked. Every answer earns XP toward your level, and every topic you play becomes a skill with its own tier, so over time you build a profile of what you actually know. The way a game shows a character's stats, except the character is you. HOW A CHALLENGE WORKS A card shows a category, a topic, and how hard the question is. Double-tap to open it: usually four options, one guess, no hints. Then you see the correct answer, a short explanation, the XP it earned, and the ideas your answer moved. IT ADAPTS TO YOU The feed picks what to show you next from how you have been doing, drawing on every level from beginner to specialist. Questions you answer come back later on an FSRS schedule, the same spaced-repetition algorithm Anki uses, timed to just before you would have forgotten them. EVERY TOPIC, ITS OWN TIER Questions come from 22 categories: Life Sciences, Physical Sciences, Medicine and Health, Mathematics, Technology, Engineering, History, Geography, Law and Government, Business and Economics, Psychology and Social Sciences, Philosophy and Religion, Language and Linguistics, Literature, Arts, Film and TV, Music, Gaming, Sports, Food and Drink, Lifestyle and Culture, General Knowledge. Inside them, each topic you play is a skill with a tier from Bronze to Diamond. It rises as you answer well and can slip when you miss or let it fade. Strength in one topic does not cover for weakness in another. GUILDS Create a guild, share the code, and everyone who joins gets a private leaderboard that compares streaks, levels and skill tiers. FREE, AND MEMBERSHIP Arena is free, with a daily limit on challenges. Membership removes the daily limit and gives you a permanent member number based on when you joined. USD 5.99 per month or USD 39.99 per year. It renews automatically until you cancel, and you can cancel anytime in your store's subscription settings. Terms of Use: https://flashcardaudit.com/terms Privacy Policy: https://flashcardaudit.com/privacy
Screenshots
Verdict
The clearest difference is update cadence: Arena by flashcardaudit.com at every 4 days against Planbook Mobile's every 2 months. Planbook Mobile's advantage is iOS requirement (13.0 vs 15.0). 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. Planbook Mobile sells 3 one-off in-app purchases and Arena by flashcardaudit.com sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
Planbook Mobile ships an update every 2 months, Arena by flashcardaudit.com every 4 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Planbook Mobile | Arena by flashcardaudit.com |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (7.7K ratings) — better | — |
| Positive reviews | 50.6% of reviews | — |
| Number of ratings | 7.7K — better | — |
| Update frequency | Every 2 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 83 MB | 62 MB |
| Age rating | 4+ | 12+ |
| Developer | Planbook Inc. | Island Cookie Shop LLC |
Bugs and requests
Planbook Mobile
Reported bugs
4 issues- Unable to add school year dates
- Login page issues (keyboard blocking screen)
- Inability to use Gmail account for sign-up
- Lesson plans deleted without explanation
Requested features
3 requests- Add copy and paste feature
- Improve mobile app experience (e.g., biometric login, portrait mode)
- Enhance integration with other platforms (e.g., Canvas)
Arena by flashcardaudit.com
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Planbook Mobile
- 1-Year Planbook Subscription$20.00
- 2-Year Planbook Subscription$36.00
- 3-Year Planbook Subscription$48.00
Arena by flashcardaudit.com
- Arena Membership$5.991 Month
- Arena Membership$39.991 Year
Questions
Is Planbook Mobile free?
Is Arena by flashcardaudit.com free?
Do Planbook Mobile or Arena by flashcardaudit.com have ads?
Which is updated more often, Planbook Mobile or Arena by flashcardaudit.com?
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