Deduce vs Chess Peace
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Deduce
Engage your mind with daily logic puzzles designed for all skill levels. Explore a vast archive of handcrafted challenges, with themed packs available for purchase. Enjoy a distraction-free experience focused purely on gameplay.
- Three daily puzzles (Easy, Medium, Hard)
- Instant access to over 100 puzzles
- Themed puzzle packs (free and paid)
- In-app tutorial and strategy guide
- Handcrafted puzzles with unique solutions
- Ad-free, timer-free gameplay
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Train your brain with Deduce — the ultimate daily logic challenge! Whether you’re a curious beginner or a seasoned puzzler, Deduce delivers fresh, satisfying challenges every single day. Daily Puzzles • Three brand-new puzzles every day: Easy, Medium, and Hard • Ideal for a quick 5-minute challenge or a deep dive Instant Archive Access • Unlock and play over 100 puzzles right from the start • Explore past puzzles with the sleek calendar view Special Puzzle Packs • Download themed packs — some free, some available for purchase • New packs added regularly without needing an app update For All Skill Levels • Challenging enough to stump experienced puzzle fans • Great for teaching kids logical thinking Built-in Guide • Learn the ropes quickly with an in-app tutorial • Master subtle strategies as you go Every Puzzle is Handcrafted • One unique solution per puzzle • No guessing — all connections must be used Pure Gameplay, No Distractions • No ads, no timers, no pressure • Clean interface designed to keep you focused • Progress is saved automatically Deduce is your daily dose of logical satisfaction — quick to pick up, impossible to put down.
Chess Peace
Engage in a peaceful chess puzzle experience offline, with no ads or account required. It offers thousands of challenges suitable for all skill levels, from beginners to grandmasters, with daily puzzles and extensive customization options.
- Offline play
- No ads or account required
- Thousands of puzzles
- Daily Puzzle feature
- Extensive customization
- Progress syncing via iCloud
- Accessibility options
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• A peaceful chess puzzle, played offline with no ads or account • No chess knowledge required — a new challenge for grandmasters and beginners alike • Thousands of puzzles plus a free Daily Puzzle every day • Available on iPhone, iPad & Mac, with your progress & settings synced via iCloud With over 26,500 unique puzzles across three difficulties and five different puzzle types, and a new Daily Puzzle every day, you play with just the board and six piece types — King, Queen, Rook (Castle), Bishop, Knight and Pawn — to find each satisfying solution. -- Daily Puzzles -- Build your streak by playing a new Daily Puzzle every day, share with other players via our Wordle-style solve grid, as well as a customised image showing the puzzle alongside the stats of your solve. -- Five Unique Puzzle Modes -- • Classic: One of each piece, one board, no captures. • Multiples: Some pieces are copies of each other. Same rule applies: no captures, only peace. • Two-Colour: White and black pieces share the board. Pieces only threaten the opposing colour. • Islands: Two boards, one puzzle. Only the Knight can jump the gap. • Presets: Some positions are revealed, but the pieces remain unknown. -- Find Your Zen through endless customisation -- Unprecedented personal customisation of the gameplay screen and menus, including subtly animated backgrounds, on/off toggles for nearly every visual element, and three distinct sets of gameplay sounds. Find your own Chess Peace in every puzzle, with customisation synced across devices. Also choose from many app-wide colour themes, board styles, and over 30 alternate app icons. -- Great chess learning tool, with no experience required -- If you're not a chess player, don't worry — Chess Peace teaches you everything you need to know, with a quick refresher on hand whenever you need it, as well as an optional possible moves system that shows every move possible by any piece on the board. -- Complete play history & in-depth statistics -- Replay your every solve move-by-move, and track your progress with granular statistics. Not your thing? Hide them using Zen and never seem them again. -- No data connection or account -- Everything is stored inside the app, with no connection required and no data collected. Your progress is synced via iCloud, available only to you. -- Home & Lock Screen Widgets -- Add some Chess Peace to your home and lock screens and jump straight into your next puzzle, or keep up your Daily Puzzle streak. -- Accessibility -- As well as supporting iOS Accessibility options, several additional accessibility features make Chess Peace as inclusive as possible, including colourblind mode, high contrast, bold icons, letters instead of piece icons, large text, reduced motion, and adaptable controls that can be brought to the top or bottom of the screen.
Screenshots
Verdict
The clearest difference is update cadence: Chess Peace at every 2 weeks against Deduce's every 8 months. Chess Peace also leads on monetization model (free vs free with in-app purchases) and ratings volume (133 vs 2). Deduce's advantage is review sentiment (100% vs 89%) and iOS requirement (13.0 vs 17.0). On price, rating, 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. Deduce sells 10 one-off in-app purchases and Chess Peace sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Deduce against 4.9 for Chess Peace. That said, the two scores are not equally well evidenced: Chess Peace has 133 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 100% of Deduce's written reviews are positive against 89% of Chess Peace's.
Deduce ships an update every 8 months, Chess Peace every 2 weeks. The most recent releases landed on September 24, 2026 and October 15, 2026 respectively.
| Parameter | Deduce | Chess Peace |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.9 (133 ratings) |
| Positive reviews | 100.0% of reviews — better | 89.1% of reviews |
| Number of ratings | 2 | 133 — better |
| Update frequency | Every 8 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 76 MB | 185 MB |
| Age rating | 4+ | +4 |
| Developer | Mark Mainwood | Sam Shepherd |
Customer experience
Deduce
Chess Peace
In-app purchases
Deduce
- Kids' Pack 1$0.99
- Hard Pack 1$0.99
- Just + and x 1$0.99
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- Mixed Pack 1$0.99
- Just + and > 1$0.99
- Just x and > 1$0.99
- Medium Pack 1$0.99
- Easy Pack 1$0.99
- Access Archives$1.99
- Extra Hard Pack 1$1.99
Chess Peace
- Premium Unlock$8.99









