Comparison

Helichopter vs Clue Formula

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

Head to head
About

Helichopter

This game is designed with extensive adaptations for players with severe motor disabilities, cognitive impairments, visual impairments, and cortical vision impairment. It features switch adaptability, though some bugs have been reported.

Highlights
  • Adaptations for motor disabilities
  • Cognitive impairment support
  • Visual impairment features
  • Cortical vision impairment compatibility
  • Switch adaptability
Features
Read full description

Find your rhythm in a helicopter obstacle game you can adjust to suit your play. Fly through the gaps, try another round, or keep practicing with No-Fail Mode. Start with Gentle, Standard, or Challenge, then adjust gap size, pipe speed, and hitbox forgiveness. Choose how you fly: - Tap to Flap - Hold to Hover - Auto Hover with altitude nudges - Up/Down Switches: one switch to rise, another to descend Make the experience comfortable: - No-Fail Mode lets you keep going after collisions. - Calm Mode removes collision sounds and impact vibration. - Show or hide the score, and switch music and sound effects on or off. - Adjust background scrolling and choose among three themes and six colour palettes. - Replay How to Play whenever you need a reminder. Menus and Settings offer scalable text and switch scanning. With VoiceOver, touch the game to fly at once, or use double-taps and actions; spoken gap guidance tells you where the next gap is. Each flight scheme has its own way to pause with switches, and Settings let you adjust the hold delay and scanning speed or turn hold-to-pause off. Helichopter works offline without an account, ads, or in-app purchases. Settings and scores are saved on your device.

About

Clue Formula

Engage in a 3D Mahjong puzzle game featuring IQ-test style tiles. Match selectable pairs to clear levels, with increasing difficulty as you progress. Utilize hints and shuffles to aid your gameplay and compete on leaderboards.

Highlights
  • 3D Mahjong puzzle gameplay
  • IQ-test style tiles
  • Layered 3D levels
  • Hint and shuffle options
  • Leaderboard competition
  • VoiceOver accessibility
Features
Read full description

Clue Formula is a 3D Mahjong puzzle with IQ-test style tiles and pattern-matching challenges. Your goal is to complete all levels. In each level, remove all tiles by selecting matching pairs. Not every matching tile can be selected. A tile is selectable only when it is positioned at the end of a row - when there is no neighboring tile on at least one side (left or right) within the same layer. To complete a level, you need to find matching pairs where both tiles are selectable. Each new level becomes more challenging as you advance. A hint can show all selectable matching pairs. A shuffle can rearrange the remaining tiles and help you continue the level. Key Features: 3D Mahjong Puzzle: Match selectable pairs and clear each level. IQ-Test Style Tiles: Match tiles using shapes and symbols. Layered 3D Levels: Look through rows and layers to find selectable matching pairs. Leaderboards: Complete levels and compete for a place on the leaderboards. Accessibility and Device Support: Clue Formula is fully playable with VoiceOver. Clue Formula is fully supported on Mac. Extra hints and extra shuffles are available for purchase.

Screenshots

Helichopter4 screens
Clue Formula4 screens

Verdict

The call

The clearest difference is in-app purchases: Helichopter at none against Clue Formula's 2. Helichopter also leads on ads (none vs shown). Clue Formula's advantage is rating (5.0 vs 4.6) and update cadence (every 4 days vs fortnightly). On price, review sentiment, ratings volume 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. Clue Formula sells 2 one-off in-app purchases. Helichopter asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Clue Formula holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 11 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Helichopter ships an update fortnightly, Clue Formula every 4 days. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

Scorecard5 real differences · 5 level
Helichopter versus Clue Formula: the parameters behind the verdict, then further details
ParameterHelichopterClue Formula
PriceFreeFree
Rating4.6 (11 ratings)5.0 (4 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings11 — better4
Update frequencyFortnightlyEvery 4 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS17.617.0 — better
Further details — not scored
Size6 MB22 MB
Age rating4+4+
DeveloperMichael Mayox2line.com LLC

Customer experience

Helichopter

All ratings11 ratings
Positive90.9%
Neutral0.0%
Negative9.1%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Clue Formula

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Helichopter

No in-app purchases

2 purchases

Clue Formula

One-time2
  • Hint$0.99
  • Shuffle$0.99

Questions

Is Helichopter free?
Helichopter is free to download, with no in-app purchases.
Is Clue Formula free?
Clue Formula is free to download, with in-app purchases available.
Which has better reviews, Helichopter or Clue Formula?
Clue Formula is rated higher. Helichopter averages 4.6 out of 5 from 11 ratings, while Clue Formula averages 5.0 from 4 ratings.
Do Helichopter or Clue Formula have ads?
Clue Formula shows ads; Helichopter does not.
Which is updated more often, Helichopter or Clue Formula?
Helichopter ships an update fortnightly, and Clue Formula every 4 days. Most recently, Helichopter was updated on November 7, 2026 and Clue Formula on November 4, 2026.

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