NumChain vs Drop Duchy
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
NumChain
This number puzzle game sharpens mental math skills through engaging gameplay. Connect numbers to form chains, sums, and products across three distinct modes. Compete globally, earn achievements, and enjoy a clean, intuitive interface designed for all ages.
- Three game modes: Chains, Sums, Multiplication
- Global leaderboards and achievements
- Hint system for challenging puzzles
- Intuitive interface and clean design
- Optimized for iPhone and iPad
- Develops mental calculation and strategic thinking
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NumChain is a number puzzle that trains your mental math. Connect numbers on the board to build chains, sums and products, collect badges and beat your high score. THREE GAME MODES • CHAINS: Join consecutive numbers on the board and build the longest chain you can. • SUMS: Connect adjacent numbers to make sums and test your mental agility. • MULTIPLICATION: The ultimate challenge for math lovers. Multiply connected numbers and master the times tables. HINTS WHEN YOU'RE STUCK ‣ Earn points and spend them on hints. ‣ Reveal a strategic move or the solution when a puzzle gets tough. COMPETE WORLDWIDE ‣ Compete against players from around the world. ‣ Global leaderboards with Game Center. ‣ Transparent and fair scoring. ‣ Special achievements to unlock. FEATURES YOU'LL LOVE ‣ Exclusive medals and badges for your achievements. ‣ Intuitive interface and clean design. ‣ Play in portrait or landscape. ‣ Optimized for iPhone, foldable iPhone and iPad. ‣ Smooth, satisfying animations. BENEFITS FOR YOUR MIND ‣ Faster mental calculation. ‣ Strategic thinking and planning. ‣ Stronger visual and spatial memory. ‣ Better concentration. ‣ Basic and advanced math skills. ‣ Quick problem solving. ‣ Perfect for all ages. PERFECT FOR ‣ Students who want to improve their math skills in a fun way. ‣ Gamers who enjoy mental challenges. ‣ Adults who want to keep their mind sharp and active. ‣ Families looking for quality educational entertainment. ‣ Teachers looking for new learning tools. ‣ Competitive players who want to climb the world rankings. Practice regularly with NumChain to sharpen your math and thinking skills and climb the global leaderboard. Download NumChain now and train your brain with numbers!
Drop Duchy
Experience a unique blend of deckbuilding, puzzle, and rogue-lite gameplay. Build a realm by strategically placing tiles, gather resources, and lead your troops to reclaim enemy territory. Each run offers a fresh challenge with procedural generation and meta-progression.
- Deckbuilding, puzzle, and rogue-lite gameplay mix
- Strategic tile placement for resource maximization
- Real-time strategy combat and territory reclamation
- Procedurally generated game experiences
- Meta-progression with over 90 challenges
- Over 110 unique cards for deck building
- Three playable factions: The Duchy, The Order, The Republic
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[TRY BEFORE YOU BUY!] A beloved PC game, now coming to mobile. Metacritic: 83. Very Positive on STEAM - 90%. Drop Duchy takes the iconic geometric puzzle gameplay we all know and love and gives it a fresh perspective: instead of simply clearing lines, you build a realm. A mix of deckbuilding, puzzle and rogue-lite, designed to hone your appetite as a block-stacking tactician. Place tile pieces as you would in a block-dropping game, but align them to maximize their activation rules. Set the right structures next to lush forests, wild rivers and grassy plains to pull out maximum resources and units. Then gather your troops, reclaim the regions under enemy control, and storm the enemy fortress along branching, decision-filled paths. Let your castle take too much damage and the run ends - but defeat is not the end: jump straight back in with a new strategy, and use the experience gained to unlock even more content. Grow in power with over 110 unique cards, trade with markets and guilds, and climb a meta progression of over 90 missions tied to three playable factions: The Duchy, The Order and The Republic. Adapt, conquer, and keep the action moving! FEATURES * An original mix of puzzle gameplay and real-time strategy * A brand new game experience with each run thanks to procedural generation * Play with Factions: The Duchy, The Order, The Republic * Meta progression: over 90 challenges designed to help you through your journey * Build the perfect deck with over 110 unique cards * An elegant and charming art direction to please your eyes * An engaging and ever-evolving soundtrack to please your ears * Choose your path between lakes, glades, forests, villages, guilds… and more!
Screenshots
Verdict
The clearest difference is review sentiment: NumChain at 100% against Drop Duchy's 61%. Drop Duchy's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price 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. NumChain sells 5 one-off in-app purchases and Drop Duchy sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
NumChain ships an update monthly, Drop Duchy weekly. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.
| Parameter | NumChain | Drop Duchy |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.6 (57 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 60.9% of reviews |
| Number of ratings | — | 57 — better |
| Update frequency | Monthly | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 1.1 GB |
| Age rating | 4+ | 9+ |
| Developer | J.Benito Pereira | Doghowl Games Ltd. |
Customer experience
NumChain
Drop Duchy
In-app purchases
NumChain
- 25 Points$0.99
- 53 Points$1.99
- Ads Remove$2.99
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- 85 Points$2.99
- 110 Points$3.99
Drop Duchy
- Base Game Offer$8.99
- Base Game$9.99









