Deduce vs Star Battle
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.
Star Battle
This logic puzzle game challenges you to place stars on a grid, ensuring each row, column, and region has the correct number. With hundreds of handcrafted puzzles and daily challenges, it offers a relaxing yet brain-testing experience.
- Unique star placement gameplay
- Hundreds of handcrafted puzzles
- Daily challenges
- Multiple difficulty levels
- Brain training for logic and focus
- Relaxing visual design
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Star Battle — Grid Logic Puzzle Game Star Battle is a relaxing and rewarding logic puzzle game built on pure deduction. Also known as Queens, Hoshi or Two Not Touch, Star Battle challenges you to place the required number of stars in each row, column, and region, while making sure that no two stars touch, even diagonally. Easy to learn and satisfying to master, Star Battle offers handcrafted puzzles, daily challenges, and a clean, focused design. From beginner-friendly boards to deeper puzzle challenges, every level is designed to feel fair, clear, and rewarding. How to Play ● Place the required number of stars in each row, column, and region. ● Stars cannot touch, even diagonally. ● Use logic and deduction to solve every puzzle. Key Features ● Every puzzle has a unique solution with no guessing required ● Zen Mode for a calm and relaxing puzzle experience ● Handcrafted Star Battle puzzles ● 1-star, 2-star, and 3-star puzzle challenges ● Daily challenges ● Multiple difficulty levels ● Clean and relaxing design ● Smart hints ● Smooth controls and clear visuals ● Offline play Download Star Battle and enjoy a clean, satisfying logic puzzle experience with daily challenges, unique solutions, and no guessing required.
Screenshots
Verdict
The clearest difference is review sentiment: Deduce at 100% against Star Battle's 58%. Deduce also leads on ads (none vs shown) and rating (5.0 vs 4.6). Star Battle's advantage is update cadence (every 3 weeks vs every 8 months) and ratings volume (70 vs 2). On price, in-app purchases, monetization model 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. Deduce sells 10 one-off in-app purchases and Star Battle sells 9 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Deduce holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Star Battle has 70 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Deduce's written reviews are positive against 58% of Star Battle's.
Deduce ships an update every 8 months, Star Battle every 3 weeks. The most recent releases landed on November 5, 2026 and November 8, 2026 respectively.
| Parameter | Deduce | Star Battle |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.6 (70 ratings) |
| Positive reviews | 100.0% of reviews — better | 58.3% of reviews |
| Number of ratings | 2 | 70 — better |
| Update frequency | Every 8 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 76 MB | 150 MB |
| Age rating | 4+ | 9+ |
| Developer | Mark Mainwood | Beijing PixelDian Technology Co., Ltd. |
Customer experience
Deduce
Star Battle
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
Star Battle
- Hint Pack 1$0.99
- Hint Pack 2$1.99
- Master Pack 10x10 IV$2.99
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- Master Pack 10x10 V$2.99
- Master Pack 10x10 I$2.99
- Master Pack 10x10 II$2.99
- Hint Pack 3$4.99
- Remove Forced Ads$6.99
- Hint Pack 4$9.99









