Comparison

Sum Fun vs Hue Factory

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

Head to head
About

Sum Fun

A unique number puzzle game that combines logic, numbers, and strategy. Enjoy endlessly replayable puzzles with creative board shapes and a brain-boosting gameplay experience. Play at your own pace with no time limits and challenge friends.

Highlights
  • Unique number puzzle gameplay
  • Variety of creative board shapes
  • Brain-boosting mental workout
  • No time limits for relaxed play
  • Challenge friends offline
  • Easy to play, fun to master
Features
Read full description

Sum Fun – The Number Puzzle Game for Sharp Minds Place numbers, match sums, blast the board! Sum Fun is the unique number puzzle that's been loved by players worldwide since 2015. How To Play (3 simple rules): 1. Place a number into any empty slot 2. If it matches the last digit of the sum of its neighbours, they get blasted away! 3. No matches? Place a number that sets up a future sum, and keep blasting until the board is empty! Why you'll love Sum Fun: • Easy to play, fun to master – just 3 simple rules, with surprising depth and strategy • 20+ creative board shapes – play on a Hexagon, Pyramid, Star, Heart, Turtle, Rocket, Butterfly, Snowflake, and many more, with new shapes added regularly! • Seasonal Postcard Challenges – play limited-time events and collect unique downloadable artwork (by real artists!) • No time limits – play at your own pace and relax while keeping your mind sharp • Challenge friends (and yourself!) – share puzzles via QR code, text code, or pass-and-play. No internet needed! • No annoying pop-up ads – your concentration stays on the puzzle, where it belongs! We play Sum Fun too, and keep the experience friendly. • Brain-boosting gameplay – after a few games, you'll be adding up numbers faster than you can say, 'What's six plus eight?' • Multiple themes – choose from Light, Dark, and Midnight to suit your style If you enjoy Sudoku, Kakuro, or other number-based brain games, you'll love the unique twist of Sum Fun. Exercise your mind, master the numbers, and discover why players keep coming back – download free today!

About

Hue Factory

Features
Read full description

Welcome to the factory floor, Engineer! Hue Factory is a puzzle game set in a whimsical steampunk paint factory. Glowing paint pours out of brass machines day and night, and someone has to make sure it all ends up in the right jars. That someone is you. How It Works Tap a tile and it rotates a quarter turn. That's the whole control scheme, and it's enough to steer streams of paint through a maze of pipes, from the emitters all the way to the collector jars. Paint flows in real time, so you can watch a colour creep along its route, run into a crate and stop dead, or finally pour into a waiting jar. Fill every jar at the same time and the level is yours. Careful, though: several colours share the board, and one thoughtless rotation can break a connection you spent minutes setting up. Master the Machinery Every chapter adds a new contraption: • Angle pipes turn a stream around a corner • Splitters divide one stream into two new colours • Mergers blend two streams into a single shade • Crossovers let two lines cross a tile without mixing • Teleporters send paint to the far side of the board None of them are complicated on their own. Put five of them between an emitter and a jar and things get interesting. Mix Your Own Colours The paint itself is part of the puzzle. Splitters and mergers create new colours mid-flow, and some jars only accept one particular shade. Later levels ask you to build a colour that doesn't exist yet: split here, merge there, and hope you got the mix right. Collect Every Star Filling the jars clears a level. Perfecting one takes more. Stars sit scattered around each board and only light up when paint runs straight through them. You can often finish a level with a shortcut we never intended, but the stars mark the proper route, and you'll want all three to earn the full rating and unlock the later chapters. Five Handcrafted Chapters Work your way up from Apprentice's Awakening, through Tinkerer's Trial, Cogsmith's Challenge and Clockwork Conundrum, to Inventor's Insight. Early boards are small and friendly. The later ones are sprawling factory floors where dozens of paint lines run at once and every free tile matters. Each level was picked and play-tested by hand, a short tutorial introduces every new machine, and if you get properly stuck, a hint can show you the next tile that needs turning. The Endless Engine Finished the chapters? The factory keeps going. The Endless Engine builds a brand-new board every time you pull the lever. No two are the same, and there is no end to them. A Factory With Character The whole game takes place inside one gloriously over-engineered paint works. Gears spin around the pipework, jars sit against worn brick walls, and every board feels like a different corner of the same machine. It's a satisfying thing, watching a colour you routed creep through the pipes, light up a star on the way past and settle into its jar. More Features • One-finger controls: tap to rotate, drag to pan, pinch to zoom • No timers, no move limits. Take your time • A leaderboard to compare scores with other engineers • Built for phones and tablets, portrait and landscape • Available in English, Dutch, German, French, Spanish, Brazilian Portuguese, Japanese, Korean, Simplified Chinese and Traditional Chinese The gears are turning and the paint is flowing. Grab your goggles, Engineer. The factory is yours.

Screenshots

Sum Fun4 screens
Hue Factory4 screens

Verdict

The call

Sum Fun and Hue Factory are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Sum Fun ships an update every 10 days, Hue Factory every 3 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

ScorecardNo meaningful differences
Sum Fun versus Hue Factory: the parameters behind the verdict, then further details
ParameterSum FunHue Factory
PriceFreeFree
Rating4.9 (33 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings33 — better—
Update frequencyEvery 10 days — betterEvery 3 weeks
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size181 MB143 MB
Age rating4+4+
DeveloperGreg SharpeMarc Bekhuis

In-app purchases

None

Sum Fun

No in-app purchases

None

Hue Factory

No in-app purchases

Questions

Is Sum Fun free?
Sum Fun is free to download, with no in-app purchases.
Is Hue Factory free?
Hue Factory is free to download, with no in-app purchases.
Do Sum Fun or Hue Factory have ads?
Both Sum Fun and Hue Factory show ads.
Which is updated more often, Sum Fun or Hue Factory?
Sum Fun ships an update every 10 days, and Hue Factory every 3 weeks. Most recently, Sum Fun was updated on October 23, 2026 and Hue Factory on October 24, 2026.

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