ClueKeeper vs Sumaddle
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
ClueKeeper
Design and participate in interactive clue hunts that guide players through locations with puzzles and challenges. Explore your surroundings in new ways, even offline, with augmented reality features.
- Create custom clue hunts
- Solve puzzles and riddles
- Augmented reality clues
- Offline play support
- Explore surroundings
- Play sample hunts
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ClueKeeper is a powerful platform for creating and playing clue hunts! What's a clue hunt? A clue hunt is a game in which the players solve clues that lead them from one to the next. The clues can be straightforward questions, physical challenges, clever puzzles or riddles, or whatever else the hunt creator can imagine. With the help of our friends from Zappar, we even support augmented reality clues! A hunt might send players searching around their local park, through the best-kept secret spots of their city, or even across state lines. ClueKeeper hunts provide a great way to have fun and explore your surroundings in a new and exciting way! Our app even works offline, allowing you to explore off-the-beaten path areas without a consistent cell connection. To get started, try out the sample hunt "Welcome to ClueKeeper"!
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
Screenshots
Verdict
The clearest difference is in-app purchases: ClueKeeper at none against Sumaddle's 15. ClueKeeper also leads on iOS requirement (13.0 vs 17.0). Sumaddle's advantage is review sentiment (95% vs 67%) and rating (4.9 vs 4.6). On price, 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
Both are free to download. Sumaddle sells 15 one-off in-app purchases. ClueKeeper asks for nothing beyond the download.
Sumaddle holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: Sumaddle has 769 ratings behind it against 20, so its average is the more settled of the two. Written reviews point the same way: 67% of ClueKeeper's written reviews are positive against 95% of Sumaddle's.
ClueKeeper ships an update every 3 months, Sumaddle every 3 weeks. The most recent releases landed on October 8, 2026 and October 20, 2026 respectively.
| Parameter | ClueKeeper | Sumaddle |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (20 ratings) | 4.9 (769 ratings) — better |
| Positive reviews | 66.7% of reviews | 94.9% of reviews — better |
| Number of ratings | 20 | 769 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 28 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | ClueKeeper LLC | Jonathan Buchanan |
Customer experience
ClueKeeper
Sumaddle
Bugs and requests
ClueKeeper
Not enough reviews yet to summarise bugs or 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
In-app purchases
ClueKeeper
No 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
Questions
Is ClueKeeper free?
Is Sumaddle free?
Which has better reviews, ClueKeeper or Sumaddle?
Do ClueKeeper or Sumaddle have ads?
Which is updated more often, ClueKeeper or Sumaddle?
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