Comparison

HELI HELL 2024 vs simian.interface++

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

Head to head
About

HELI HELL 2024

Pilot a helicopter through intense aerial combat, dodging bullets and destroying enemies. Upgrade weapons and customize your chopper to face waves of adversaries and massive bosses in this retro-inspired bullet hell shooter.

Highlights
  • 6 helicopters
  • 22 upgradable weapons
  • Over 50 enemy units
  • Massive bosses
  • Retro-inspired levels
  • High score competition
Features
Read full description

GET TO THE CHOPPAAAAAA! Unleash the fury of the skies in HELI HELL – the ultimate bullet hell shmup that will test your mettle and your trigger finger! Dive into a relentless arcade experience where the sky is your battlefield and danger comes from every angle. Your mission: pilot a battle-hardened helicopter through waves of relentless enemies, dodging a maelstrom of bullets and obliterating adversaries with a formidable arsenal at your fingertips. SHOW NO MERCY! FEATURES: - 6 helicopters (and more to come) - 22 upgradable weapons - Over 50 different enemy units - MASSIVE. HEAVY. BOSSES. Prepare for vertical mayhem as you ascend through retro-inspired levels, each packed with unique challenges and ruthless bosses. HELI HELL combines the nostalgia of classic shooters with the intense action of modern bullet hell games. Rack up high scores, compete with players worldwide, and etch your name in the annals of high-flying heroes. With every level, the onslaught intensifies, pushing your skills to the limit as you navigate through the chaos of non-stop bullet storms. Customize your chopper, unlock devastating weapons, and show no mercy as you blast through enemy lines. Whether you're a seasoned shmup veteran or a newcomer to the arcade shooter genre, HELI HELL offers an adrenaline-pumping, sky-dominating adventure that's not for the faint of heart. Join the aerial assault, embrace the bullet hell, and become the ultimate sky warrior in HELI HELL – where victory is only a shot away!

About

simian.interface++

An abstract puzzle game that challenges players with pattern recognition and intuition. It features a unique soundtrack, an original version of the game, and a new infinite mode with procedurally generated content for endless replayability.

Highlights
  • Abstract puzzle experience
  • Pattern recognition challenges
  • Intuitive gameplay
  • Original game included
  • Infinite_loop mode
  • Procedurally generated levels
Features
Read full description

simian.interface++, the fully featured update to the Flash game simian.interface, is an abstract puzzle experience for simian participants of all ages and abilities. There are no explicit rules, no instructions, and very simple controls. Inspired by tabletop puzzles, modern art, and cognitive psychology experiments, simian.interface++ presents challenges that must be solved using pattern recognition, intuition, and experimentation. features: - an incredible soundtrack composed by chiptune artist Note! - the original simian.interface - the new 'infinite_loop' mode, with procedurally generated levels, and randomized music and story content! infinite replay value! *This is essentially the same version of the game that was published on iOS by Chillingo from 2014-2017. However, it has been updated for modern devices, and is now self-published so we can ensure that it stays functional and available. Apologies to anyone who purchased the old version.

Screenshots

HELI HELL 20244 screens
simian.interface++4 screens

Verdict

The call

The clearest difference is ads: simian.interface++ at none against HELI HELL 2024's shown. simian.interface++ also leads on update cadence (daily vs every 2 months) and rating (5.0 vs 4.6). HELI HELL 2024's advantage is ratings volume (220 vs 5). On price, in-app purchases, monetization model 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. HELI HELL 2024 sells 11 one-off in-app purchases and simian.interface++ sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

simian.interface++ holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: HELI HELL 2024 has 220 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 78% of HELI HELL 2024's written reviews are positive against 100% of simian.interface++'s.

UpkeepUpdate frequency

HELI HELL 2024 ships an update every 2 months, simian.interface++ daily. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
HELI HELL 2024 versus simian.interface++: the parameters behind the verdict, then further details
ParameterHELI HELL 2024simian.interface++
PriceFreeFree
Rating4.6 (220 ratings)5.0 (5 ratings) — better
Positive reviews77.7% of reviews100.0% of reviews — better
Number of ratings220 — better5
Update frequencyEvery 2 monthsDaily — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size674 MB152 MB
Age rating12+4+
DeveloperNikita Efremovvested interest LLC

Customer experience

HELI HELL 2024

All ratings217 ratings
Positive90.8%
Neutral4.1%
Negative5.1%
Written reviews529 reviews
Positive77.7%
Neutral7.8%
Negative14.6%

simian.interface++

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

HELI HELL 2024

Reported bugs

3 issues
  • Restore purchases not working
  • Game progress not syncing across devices
  • Invisible mines in certain levels

Requested features

4 requests
  • More levels and content updates
  • Ability to customize helicopters
  • Manual firing option
  • In-game music

simian.interface++

Not enough reviews yet to summarise bugs or requests.

In-app purchases

11 purchases

HELI HELL 2024

One-time11
  • Permanent Magnet$0.99
  • Piggy bank$0.99
  • Piggy bank$1.99
Show 8 more
  • Wad of money$1.99
  • Wad of money$2.99
  • War cooperative$2.99
  • President's slush fund$3.99
  • War cooperative$4.99
  • Government support$6.99
  • President's slush fund$9.99
  • Government support$19.99
1 purchases

simian.interface++

One-time1
  • Buy Full Game$1.99

Questions

Is HELI HELL 2024 free?
HELI HELL 2024 is free to download, with in-app purchases available.
Is simian.interface++ free?
simian.interface++ is free to download, with in-app purchases available.
Which has better reviews, HELI HELL 2024 or simian.interface++?
simian.interface++ is rated higher. HELI HELL 2024 averages 4.6 out of 5 from 220 ratings, while simian.interface++ averages 5.0 from 5 ratings.
Do HELI HELL 2024 or simian.interface++ have ads?
HELI HELL 2024 shows ads; simian.interface++ does not.
Which is updated more often, HELI HELL 2024 or simian.interface++?
HELI HELL 2024 ships an update every 2 months, and simian.interface++ daily. Most recently, HELI HELL 2024 was updated on October 21, 2026 and simian.interface++ on October 24, 2026.

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