BookMoves vs FPVSIM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BookMoves
Master chess openings with a unique blend of theory, computer science, and spaced repetition. Memorize hundreds of variants for both sides and transition from rote learning to intuitive application. Overcome the forgetting curve with an innovative technique for lasting mastery.
- Chess opening theory
- Spaced repetition learning
- Hundreds of chess variants
- Statistical probabilities
- Integrated scoring system
- Algorithmic improvement
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Embark on a transformative chess journey with our groundbreaking app, seamlessly blending Opening Theory, Computer Science, and Space Repetition. Easily memorize hundreds of chess variants for both white and black, transitioning from rote memorization to intuitive application of knowledge. Overcome the Forgetting Curve using our innovative Space Repetition technique, converting short-term storage into lasting mastery. Access a comprehensive database of 1 million+ opening variants, each accompanied by statistical probabilities. Our integrated scoring system considers game statistics and parameters for effective play, constantly evolving to provide you with the strongest advantage at your current skill level. Experience the power of continuous algorithmic improvement, ensuring you stay ahead in every game. Optimized for mobile, our app lets you practice openings anytime, anywhere, enhancing your skills on the move. Unleash your chess potential by consistently training with new openings, conveniently accessible through your mobile browser. Elevate your game, break free from stagnation, and become the chess pro you aspire to be. Start your journey to mastery today!
FPVSIM
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A reliable, easy to use, cross platform drone racing lap timing system. Compatible with both analog and HD FPV systems. Perfect for race events and personal/club training. Timer V3 just arrived! With USB connectivity with all mainline devices, zero connection drops even with the most complex RF environments!
Screenshots
Verdict
The clearest difference is price: BookMoves at Free against FPVSIM's $9.99. BookMoves also leads on update cadence (every 3 weeks vs every 4 months). On ads, in-app purchases, device support and iOS requirement 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
BookMoves is free to download; FPVSIM costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
BookMoves ships an update every 3 weeks, FPVSIM every 4 months. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.
| Parameter | BookMoves | FPVSIM |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | 4.5 (4 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 70 MB | 73 MB |
| Age rating | 4+ | 4+ |
| Developer | Regulus Team s.r.o. | Jiahao Wang |
In-app purchases
BookMoves
No in-app purchases
FPVSIM
No in-app purchases
