Comparison

Sumaddle vs Akari

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Interactive logic puzzles
  • Number combination fitting
  • Pure logic solving
  • Built-in help and mistake correction
  • Over 150 free puzzles
  • Offline play
  • Ad-free experience
Features
Read full description

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

About

Akari

Place light bulbs on a grid to illuminate every square without bulbs shining on each other. Master hundreds of addictive logic puzzles with daily and weekly challenges.

Highlights
  • Daily puzzle challenges
  • Weekly challenges
  • Multiple difficulty levels
  • Logic puzzle packs
  • Solving strategy guide
  • Player statistics and progress tracking
  • Offline play
Features
Read full description

Puzzle Your Way to Enlightenment! Ready for a mental workout that’s both challenging and fun? Akari, also known as Light Up, is here to brighten your day! Put on your thinking cap and illuminate your way through hundreds of addictive puzzles. This isn’t just a game; it’s a light-bulb moment waiting to happen. How to Play: Place light bulbs on the grid to illuminate every square. But watch out! Bulbs can't shine on each other, and you’ll need to use your wits to avoid lighting up the same area twice. Can you master the art of illumination and solve them all? Features: - Everyday I release a new number game (daily puzzle challenge) - Achievements & Leaderboards: Show off your brilliance and climb to the top of the global leaderboard. - There is also a weekly challenge for geniuses - There are 5 different difficulties (easy to diabolical) - Packs with hand-selected logic puzzle (e.g. for beginners) - Guide with solving strategies - Profile with stats about your skill level & progress Why You’ll Love Akari: - Perfect blend of strategy and logic. - No time limits, just pure puzzling pleasure. - Suitable for all ages. - Play offline anytime, anywhere. Whether you’re a seasoned puzzle master or a curious newcomer, Akari is the perfect way to light up your free time. Download now and start your journey to becoming the ultimate puzzle luminary! Privacy policy: https://guriddo.app/akari/legal/privacy Terms of use: https://guriddo.app/akari/legal/tos

Screenshots

Sumaddle3 screens
Akari4 screens

Verdict

The call

The clearest difference is review sentiment: Sumaddle at 95% against Akari's 33%. Sumaddle also leads on ads (none vs shown) and rating (4.9 vs 4.6). Akari's advantage is iOS requirement (15.6 vs 17.0). On price, update cadence, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sumaddle sells 10 one-off in-app purchases and Akari sells 10 in-app purchases, starting at $2.49 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

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 30, so its average is the more settled of the two. Written reviews point the same way: 95% of Sumaddle's written reviews are positive against 33% of Akari's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard5 real differences · 5 level
Sumaddle versus Akari: the parameters behind the verdict, then further details
ParameterSumaddleAkari
PriceFreeFree
Rating4.9 (769 ratings) — better4.6 (30 ratings)
Positive reviews94.9% of reviews — better33.3% of reviews
Number of ratings769 — better30
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.6 — better
Further details — not scored
Size31 MB73 MB
Age rating4+4+
DeveloperJonathan BuchananSimon Schuster

Customer experience

Sumaddle

All ratings769 ratings
Positive98.3%
Neutral0.7%
Negative1.0%
Written reviews98 reviews
Positive94.9%
Neutral1.0%
Negative4.1%

Akari

All ratings30 ratings
Positive90.0%
Neutral3.3%
Negative6.7%
Written reviews6 reviews
Positive33.3%
Neutral16.7%
Negative50.0%

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

Akari

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Sumaddle

One-time10
  • Crafty, Pack 1$0.99
  • Crafty, Pack 2$0.99
  • Crafty, Pack 3$0.99
Show 7 more
  • 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
  • Puzzle Generator$9.99
10 purchases

Akari

Subscriptions2
  • Supporter (Monthly)$2.491 Month
  • Supporter (Annual)$14.991 Year
One-time8
  • Beginner Pack 1 (5x5)$0.99
  • Beginner Pack 1 (10x10)$0.99
  • Beginner Pack 1 (7x7)$0.99
Show 5 more
  • Beginner Pack 1 (14x14)$0.99
  • Advanced Pack 1 (5x5)$1.99
  • Genius Pack 1 (25x25)$3.49
  • Wizard Pack 1 (30x30)$3.49
  • Wizard Pack 1 (40x50)$3.49

Questions

Is Sumaddle free?
Sumaddle is free to download, with in-app purchases available.
Is Akari free?
Akari is free to download, with in-app purchases available.
Which has better reviews, Sumaddle or Akari?
Sumaddle is rated higher. Sumaddle averages 4.9 out of 5 from 769 ratings, while Akari averages 4.6 from 30 ratings.
Do Sumaddle or Akari have ads?
Akari shows ads; Sumaddle does not.
Which is updated more often, Sumaddle or Akari?
Sumaddle ships an update every 3 weeks, and Akari every 3 weeks. Most recently, Sumaddle was updated on November 3, 2026 and Akari on November 4, 2026.

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