Comparison

Flow Free vs Viper Puzzle

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

Head to head
About

Flow Free

Connect matching colored pipes to fill the board and solve puzzles. Avoid crossing pipes to complete each level. Offers hundreds of free puzzles with varying difficulty, plus daily challenges and a timed mode.

Highlights
  • Connect matching colors
  • Cover the entire board
  • Hundreds of shaped puzzles
  • Daily new levels
  • Time Trial mode
  • Game Center achievements
  • Cloud sync
Features
Read full description

Flow Free® reimagined: Infinite possibilities! If you like Flow Free, you'll love Flow Free: Shapes! Connect matching colors with pipe to create a Flow®. Pair all colors, and cover the entire board to solve each puzzle. But watch out, pipes will break if they cross or overlap! Free play through hundreds of levels, or race against the clock in Time Trial mode. Gameplay ranges from simple and relaxed, to challenging and frenetic, and everywhere in between. How you play is up to you. So, give Flow Free: Shapes a try, and experience "mind like water"! Flow Free: Shapes features: * Over 4,000 free, shaped puzzles! * Daily puzzles: new levels every day, never run out * Carefully crafted, high-quality puzzles ranging from easy to extreme! * Optimized touch controls for smooth, satisfying play * Game Center achievements and cloud sync of your progress * Clean, colorful graphics and fun sound effects Enjoy!

About

Viper Puzzle

Experience a unique snake game where strategy and spatial reasoning replace reflexes. Navigate intricate levels, collect eggs to grow your snake, and master precise tap-to-turn controls. This game offers a satisfying puzzle experience for short bursts or extended play.

Highlights
  • Hand-crafted puzzle levels
  • Precise tap-to-turn controls
  • In-game tutorial
  • Collect eggs to grow snake
  • Multiple snake skins
  • Offline play
Features
Read full description

A fresh take on the classic snake game, with puzzles and a tutorial that teaches you the moves. VIPER is a snake puzzle game built around precise, tap-to-turn controls. Each level is hand-designed: glide along walls, time your turns through tight corridors and eat eggs to grow longer. FEATURES • Dozens of hand-crafted levels, sorted from easy to brain-bending • Tap-to-turn controls (left tap = counter-clockwise, right tap = clockwise) — fast to learn, satisfying to master • A first-play tutorial that walks you through the moves • Eggs to eat into new snake segments • Multiple snake skins — pick the look that fits your mood • Haptic feedback and optional sound • Plays great offline, anywhere WHY VIPER Most snake games are about reflexes. VIPER is about reading the board. Every level is a small spatial puzzle: where do you turn, when do you turn, and which path leaves you room to grow? Levels start simple and gradually layer in eggs, wormholes, and tighter geometry until you're planning three moves ahead. Whether you're killing five minutes on a commute or settling in for a long session, VIPER is designed to feel good in your hand and respect your time.

Screenshots

Flow Free4 screens
Viper Puzzle3 screens

Verdict

The call

The clearest difference is in-app purchases: Viper Puzzle at none against Flow Free's 10. Viper Puzzle also leads on ads (none vs shown) and update cadence (fortnightly vs every 10 months). Flow Free's advantage is ratings volume (14K vs 1). On price, rating 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Flow Free sells 10 one-off in-app purchases. Viper Puzzle asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Viper Puzzle holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Flow Free has 14K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 82% of Flow Free's written reviews are positive against 100% of Viper Puzzle's.

UpkeepUpdate frequency

Flow Free ships an update every 10 months, Viper Puzzle fortnightly. The most recent releases landed on November 10, 2026 and October 31, 2026 respectively.

Scorecard7 real differences · 3 level
Flow Free versus Viper Puzzle: the parameters behind the verdict, then further details
ParameterFlow FreeViper Puzzle
PriceFreeFree
Rating4.8 (14K ratings)5.0 (1 ratings) — better
Positive reviews81.8% of reviews100.0% of reviews — better
Number of ratings14K — better1
Update frequencyEvery 10 monthsFortnightly — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size90 MB41 MB
Age rating4+4+
DeveloperBig Duck Games LLCCESARE CELOZZI

Customer experience

Flow Free

All ratings13,611 ratings
Positive96.6%
Neutral2.0%
Negative1.5%
Written reviews401 reviews
Positive81.8%
Neutral6.0%
Negative12.2%

Viper Puzzle

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Flow Free

Reported bugs

2 issues
  • Accidental hint usage due to button placement
  • Visibility issues with overlapping paths in 3D levels

Requested features

3 requests
  • Restore original UI layout from previous Flow Free games
  • Option to disable in-app purchase prompts
  • Forward/backward level navigation

Viper Puzzle

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Flow Free

One-time10
  • 5 Hints$0.99
  • Fall Harvest Colors$0.99
  • Pastel Colors$0.99
Show 7 more
  • Neon Rainbow Colors$0.99
  • Winter Chill Colors$0.99
  • Starter Bundle$1.99
  • Unlock All Themes$1.99
  • 20 Hints$2.99
  • Unlock All Packs & Remove Ads$4.99
  • 100 Hints$9.99
None

Viper Puzzle

No in-app purchases

Questions

Is Flow Free free?
Flow Free is free to download, with in-app purchases available.
Is Viper Puzzle free?
Viper Puzzle is free to download, with no in-app purchases.
Which has better reviews, Flow Free or Viper Puzzle?
Viper Puzzle is rated higher. Flow Free averages 4.8 out of 5 from 14K ratings, while Viper Puzzle averages 5.0 from 1 ratings.
Do Flow Free or Viper Puzzle have ads?
Flow Free shows ads; Viper Puzzle does not.
Which is updated more often, Flow Free or Viper Puzzle?
Flow Free ships an update every 10 months, and Viper Puzzle fortnightly. Most recently, Flow Free was updated on November 10, 2026 and Viper Puzzle on October 31, 2026.

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