Chessbook vs Aethron Study
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chessbook
Build a personalized chess opening repertoire with spaced repetition training. Identify weaknesses, learn optimal moves based on master game data, and avoid obscure lines. Review your online games for mistakes and master middlegame plans.
- Custom opening repertoire creation
- Spaced repetition training
- Automatic gap identification
- Avoid obscure moves
- Handle transpositions
- Review online game mistakes
- Learn middlegame plans
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Chessbook is the fastest way to build a bulletproof opening repertoire. Key features: • Create a custom repertoire • Train with spaced repetition • Find gaps automatically • Avoid obscure moves • Handle transpositions • Find mistakes in your online games • Fast & modern interface “A fun and simple way to build an opening repertoire based on probabilities of most likely lines. You will actually learn the moves that will happen on the board!” —Grandmaster Eugene Perelshteyn FIND THE GAPS IN YOUR REPERTOIRE BEFORE YOUR OPPONENTS DO Chessbook calculates your coverage per opening so you always know what to work on. PICK THE BEST MOVES TO MAXIMIZE YOUR WIN-RATE Weigh up your options by looking at stats from master games, engine evaluation and results at your level. ONLY SPEND TIME ON THE MOVES YOU'LL ACTUALLY SEE Most books and courses are written by masters for masters. Chessbook lets you avoid obscure grandmaster lines and focus your effort on the moves that are common at your level. TARGETED PRACTICE MEANS YOU'LL NEVER FORGET A MOVE Chessbook uses spaced repetition, a scientifically proven technique to memorize openings quickly and thoroughly. COLLECT ALL YOUR OPENINGS IN ONE PLACE Nobody gets their whole repertoire from a single course or book. Chessbook lets you combine openings from multiple sources to create a custom repertoire just for you. REVIEW YOUR ONLINE GAMES FOR OPENING MISTAKES Get instant feedback on how well you're sticking to your repertoire. Chessbook supports both Lichess and Chess.com LEARN MIDDLEGAME PLANS FOR ANY OPENING See how top players handle the positions that result from the openings you play. CHESSBOOK PRO Chessbook Pro gives you the ability to add unlimited moves to your repertoire! Free users can add 400 moves. Terms of Use: https://chessbook.com/terms-and-conditions.html Privacy Policy: https://chessbook.com/privacy-policy.html
Aethron Study
This app helps students manage their schoolwork by connecting to their Canvas LMS. It organizes assignments, provides AI-powered summaries, and offers tools for note-taking, flashcards, study plans, and essay grading.
- Canvas LMS integration
- Assignment and due date tracking
- AI-powered coursework analysis
- Note-taking and organization
- Smart flashcards and quizzes
- Personalized study plans
- Focus timer
- Essay grading against rubrics
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Aethron Study Stay on top of your schoolwork with Aethron Study -- the all-in-one study companion that connects directly to your Canvas LMS account. See all your assignments, due dates, and courses in one place. No more switching between tabs or forgetting what's due. Aethron Study pulls everything from Canvas and organizes it into a clean, easy-to-use dashboard. What you can do: View all your assignments and due dates at a glance Get AI-powered summaries and analysis of your coursework Take and organize notes by class, unit, and semester Create smart flashcards and practice quizzes from your notes Build personalized study plans for upcoming tests Time your study sessions with a built-in focus timer Translate text and documents in 30+ languages Analyze YouTube videos for study notes Grade your essays against rubrics before you submit Import your class schedule from a photo Upgrade to Student+ to unlock premium features like AI-generated flashcards, practice quizzes, essay grading, math tutoring, study planning, and more. Aethron Study is built for students who want to work smarter, not harder. Terms of Use: https://aethronstudy.com/terms Privacy Policy: https://aethronstudy.com/privacy Student+ subscription options: - Monthly: $4.99/month - Annual: $39.99/year Subscription auto-renews unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in Settings > Apple ID > Subscriptions.
Screenshots
Verdict
The clearest difference is rating: Chessbook at 4.9 against Aethron Study's 4.3. Chessbook also leads on ratings volume (2.2K vs 3). Aethron Study's advantage is review sentiment (100% vs 83%). On price, ads, in-app purchases and monetization model 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. Chessbook sells 2 in-app purchases, starting at $7.99 per month and Aethron Study sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Chessbook holds the better App Store score, 4.9 against 4.3. That said, the two scores are not equally well evidenced: Chessbook has 2.2K ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 83% of Chessbook's written reviews are positive against 100% of Aethron Study's, so the app with the better star average is not the one people write more warmly about.
| Parameter | Chessbook | Aethron Study |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (2.2K ratings) — better | 4.3 (3 ratings) |
| Positive reviews | 82.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 2.2K — better | 3 |
| Update frequency | Every 3 days | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 121 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Chessbook | Aethron Dynamics LLC |
Customer experience
Chessbook
Aethron Study
Bugs and requests
Chessbook
Reported bugs
3 issues- App not working on iPad
- Login issues on iPhone
- Inability to delete move sequences
Requested features
4 requests- Pause after completing move sequences
- Clearer instructions for beginners
- Customizable notification settings
- Option to input and practice specific positions
Aethron Study
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Chessbook
- Chessbook Pro - Monthly$7.991 Month
- Chessbook Pro - Annual$79.991 Year
Aethron Study
- Student+ Monthly$4.991 Month
- Student+ Annually$49.991 Year









