Comparison

Kepler Attack vs I Monkey Jam

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

Head to head
About

Kepler Attack

Engage in a retro arcade space shooter experience on your iPhone and Apple Watch. Destroy waves of alien invaders with power-ups and intuitive controls. Enjoy fast-paced gameplay perfect for short bursts of fun.

Highlights
  • Space shooter gameplay
  • Alien invasion waves
  • Power-ups (Shield, Triple Shot, etc.)
  • Apple Watch Crown controls
  • iPhone swipe controls
  • Retro arcade graphics
  • Short burst gameplay
Features
Currently charting
Read full description

Featured in Apple's "Great on watchOS 6" and "Our Favourite Apple Watch Apps" collections! #2 Casual Game in the US! Kepler Attack is an arcade game for your iPhone and Apple Watch. Fly through space and destroy waves of alien space invaders from Kepler-452b. “I’m just amazed that this is on my Watch.” - Tom, host of The Apple WatchCast Podcast - http://www.applewatchcast.com “I think this is actually my personal favorite new game now on the Apple Watch because of its really fast pacing which is perfect for these types of games.” - HotshotTek, 10 Awesome Apple Watch Games Apps of 2019 • Inspired by Gyruss, Galaga, Galaxian and Space Invaders! • Beautiful retro arcade graphics! • Fast paced alien attack waves with a variety of enemy space invaders! • Power-ups include Shield, Triple Shot, Rapid Fire and Smart Bomb! • Intuitive and simple controls using the Crown on the Watch! • Swipe to move on the iPhone! • Short burst gameplay is perfect for the Watch and iPhone! • Retro sound effects on the iPhone! • Play anywhere, anytime! • Includes Valentine's Day and Santa Christmas Holiday theme! • Runs at 60fps on the Watch! Relive the glory days of the arcade on your Apple Watch and iPhone. Thanks for playing Johnno & Pete

About

I Monkey Jam

Guide a playful monkey to collect bananas and avoid falling coconuts in this arcade game. Test your reflexes with increasing difficulty levels and aim for high scores. Enjoy endless gameplay with intuitive controls and unique wraparound screen navigation.

Highlights
  • Collect bananas
  • Avoid falling coconuts
  • Three difficulty levels
  • Top 10 scores saved
  • Endless gameplay
  • Intuitive controls
  • Wraparound screen navigation
  • Kick coconuts for bonus points
Features
Read full description

Monkey Jam is a fun and challenging arcade game where you guide a playful monkey to collect bananas while avoiding falling coconuts. The game tests your reflexes as you move the monkey back and forth to grab bananas and dodge coconuts. Catching a coconut ends the game, so stay sharp! Features: Three Difficulty Levels: Adjust the game to your skill level. As you progress, the number of coconuts increases, making the game more challenging. Top Scores: Track your best performances with the Top 10 scores saved in the game. Try to beat your own record! Endless Gameplay: Play as long as you can avoid coconuts. The game continues until you make a mistake. Intuitive Controls: Control the monkey by tapping the screen or using the Digital Crown for precise movement. Get ready to enjoy hours of entertainment in this fast-paced, banana-collecting adventure! Wraparound Screen Navigation Enter a screen from the right — and exit on the left. It’s like stepping into a looped world, where the monkey flows seamlessly through the edges of your screen. You can now kick coconuts to earn bonus points! But be careful — they’re still dangerous. Think you can master the timing? Use P.S. Not more than 30 min per day :) :) :)

Screenshots

Kepler Attack4 screens

Verdict

The call

The clearest difference is rating: I Monkey Jam at 5.0 against Kepler Attack's 4.5. Kepler Attack's advantage is ratings volume (943 vs 1) and chart position (#138 vs unranked). On ads, 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

Kepler Attack costs $1.99 and I Monkey Jam $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

I Monkey Jam holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Kepler Attack has 943 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Kepler Attack ships an update every 2 months, I Monkey Jam every 3 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

Scorecard5 real differences · 6 level
Kepler Attack versus I Monkey Jam: the parameters behind the verdict, then further details
ParameterKepler AttackI Monkey Jam
Price$1.99 — better$2.99
Rating4.5 (943 ratings)5.0 (1 ratings) — better
Positive reviews81.4% of reviews—
Number of ratings943 — better1
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#138 — better—
DevicesiPhone, iPad, Apple Watch — betteriPhone, Apple Watch
Requires iOS17.017.0
Further details — not scored
Size17 MB16 MB
Age rating4+4+
DeveloperRed Sprite StudiosMaksym Volobuiev

Bugs and requests

Kepler Attack

Reported bugs

5 issues
  • Game doesn't play complete rip off
  • Just says on the watch version that it has to be installed on my iPhone for it to work. It's installed on my iPhone. Doesn't work.
  • This seems like a good game but I don't see it on my watch.
  • I have the first version watch Apple one, and it does not work on the watch,And has offered me a refund, I appreciate it.
  • It won't download on my watch

Requested features

2 requests
  • Add a golden starship IF
  • Please add upgrades so we can have bettr ships

I Monkey Jam

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Kepler Attack

No in-app purchases

None

I Monkey Jam

No in-app purchases

Questions

Is Kepler Attack free?
Kepler Attack costs $1.99, with no in-app purchases.
Is I Monkey Jam free?
I Monkey Jam costs $2.99, with no in-app purchases.
Which has better reviews, Kepler Attack or I Monkey Jam?
I Monkey Jam is rated higher. Kepler Attack averages 4.5 out of 5 from 943 ratings, while I Monkey Jam averages 5.0 from 1 ratings.
Do Kepler Attack or I Monkey Jam have ads?
Neither Kepler Attack nor I Monkey Jam shows ads.
Which is updated more often, Kepler Attack or I Monkey Jam?
Kepler Attack ships an update every 2 months, and I Monkey Jam every 3 months. Most recently, Kepler Attack was updated on October 29, 2026 and I Monkey Jam on October 27, 2026.

Other comparisons