Sumaddle vs DropRXN
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Sumaddle
This logic puzzle game transforms pencil-and-paper challenges into interactive brain teasers. Fit number combinations to clues using pure logic, with no mental arithmetic required. Enjoy over 150 free puzzles of varying difficulty, with built-in help and offline play.
- Interactive logic puzzles
- Number combination fitting
- Pure logic solving
- Built-in help and mistake correction
- Over 150 free puzzles
- Offline play
- Ad-free experience
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This type of logical puzzle was first seen in the Japan Puzzle Championship 2006 and is sometimes known as Doppelblock, or Smashed Sums. When played with pencil and paper, these puzzles can be hard work to solve. Sumaddle changes that by transforming the puzzles into interactive brain teasers that unfold before your eyes. Each puzzle has a unique solution. Finding the solution involves fitting the number combinations to the clues. The app makes it easy to view the possible combinations, you don’t need to do any sums in your head. Instead, you are able to focus on using logic to narrow down the combinations and find a fitting arrangement. The puzzles come in a range of sizes and difficulties, to suit all levels of skill and puzzling purposes. Choose a small puzzle to idle away a minute or two while waiting in a queue, or a big puzzle to give your brain some exercise during a coffee break! Some reasons why you will enjoy playing Sumaddle: • more than 150 puzzles are included for free • all puzzles can be solved with pure logic, no mental arithmetic required • the sophisticated built-in help can explain the logical reasoning at each step and also fix mistakes if you go wrong • the built-in help is completely free, use it as much as you like • works offline (great for long journeys) • a high standard of accessibility, including comprehensive support for VoiceOver • ad-free play - there are absolutely no ads! IGRS age rating (Indonesia Game Rating System): 3+ Designed and developed in Winterthur, Switzerland
DropRXN
Engage in a strategic ball-dropping game where you match rows and columns based on dropping numbers. Trigger chain reactions to achieve high scores and test your luck against random chance. Enjoy customizable settings and a unique gameplay experience.
- Ball-dropping puzzle gameplay
- Match rows and columns
- Chain reaction scoring
- Multiple difficulty levels
- Customizable settings
- Pithy rejoinders
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A game where you match wits against the fickle whims of random chance. Match rows and columns according to the number on the balls as they drop into the grid. Create satisfying point-scoring chain reactions to get the highest score. Features: Fast-paced ball-dropping action! Select 5 different difficulty levels! Change Settings, including background music! Pithy rejoinders! This game is a labor of love. A hobby I developed in my spare time just to see if I can do it. Try not to expect too much. Rated IGRS 3+ in Indonesia.
Screenshots
Verdict
The clearest difference is price: Sumaddle at Free against DropRXN's $0.99. Sumaddle also leads on update cadence (every 3 weeks vs every 25 months) and ratings volume (769 vs 2). DropRXN's advantage is in-app purchases (none vs 15) and iOS requirement (12.0 vs 17.0). On rating, ads 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
Sumaddle is free to download; DropRXN costs $0.99 up front. Sumaddle sells 15 one-off in-app purchases. DropRXN asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for Sumaddle against 5.0 for DropRXN. That said, the two scores are not equally well evidenced: Sumaddle has 769 ratings behind it against 2, so its average is the more settled of the two.
Sumaddle ships an update every 3 weeks, DropRXN every 25 months. The most recent releases landed on October 24, 2026 and June 1, 2026 respectively.
| Parameter | Sumaddle | DropRXN |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.9 (769 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 94.9% of reviews | — |
| Number of ratings | 769 — better | 2 |
| Update frequency | Every 3 weeks — better | Every 25 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 165 MB |
| Age rating | 4+ | 4+ |
| Developer | Jonathan Buchanan | James Mundie |
Customer experience
Sumaddle
DropRXN
Bugs and requests
Sumaddle
Reported bugs
2 issues- Losing progress when minimizing the app
- Inconsistent difficulty ratings
Requested features
4 requests- Ability to selectively pencil in notes
- More difficult puzzle options
- Synced progress across devices
- Detailed statistics and leaderboard
DropRXN
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sumaddle
- Quirky, Pack 5$0.99
- Very Difficult Puzzles$0.99
- Quirky, Pack 1$0.99
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- Premium 9x9 Puzzles, Pack 1$0.99
- Crafty, Pack 1$0.99
- Crafty, Pack 2$0.99
- Crafty, Pack 3$0.99
- Sneaky, Pack 1$0.99
- Sneaky, Pack 2$0.99
- Sneaky, Pack 3$0.99
- Tricky, Pack 1$0.99
- Tricky, Pack 2$0.99
- Tricky, Pack 3$0.99
- Assorted Puzzles$0.99
- Puzzle Generator$9.99
DropRXN
No in-app purchases








