Comparison

Kernel King vs PlanetCrystals Inc

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

Head to head
About

Kernel King

Tap to create an endless stream of popcorn in this addictive idle game. Invest in upgrades to pop faster, earn more, and unlock new poppers. Compete with friends and aim to become the ultimate Kernel King.

Highlights
  • Tap to make popcorn
  • Investments for faster popping
  • Upgrade popper and recipe
  • Offline kernel earnings
  • Unlockable poppers
  • Prestige system
  • Bonuses and multipliers
Features
Read full description

Tap to make popcorn! In this super simple yet insanely addicting game you'll be making more popcorn than you'll know what to do with. Tap to make popcorn in a meeting, during class, on the bus, waiting in line. Once you start popping you won't be able to stop. Your friends and family start to worry about when they haven't seen you in days. You are up to your eyes in popcorn. You begin to dream in popcorn. You only take breaks from popping popcorn to eat popcorn. There is only one goal. Become the Kernel King. Kernel King features: -Simple game mechanics - Tap to make popcorn -Investments to pop even faster - Once you start popping you'll be hard to stop -Upgrade your popper - Earn more kernels per second -Upgrade your recipe - Earn more kernels per click -Upgrade your status - Earn more kernels while you're not popping -Buy a bucket to collect popcorn while you're eating popcorn - Most have figured out how to eat and pop at the same time so you run the risk of falling behind with this tactic -Over 10 different poppers to unlock - Collect them all and show off to your friends -Game Center - Know exactly how close you are to being the king -Share on Facebook and Twitter - Let your friends know how far they are behind -Prestige and pop kernels even faster - It's harder to stay at the top than it is to get there -Bonuses and Multipliers - Earn bonuses and multipliers to start rolling in popcorn Everyone else has already started, but there is still hope. Download today for free and start your journey to the top. There can be only one Kernel King. Are you the one?

About

PlanetCrystals Inc

Features
Read full description

Embark on an exciting journey through the cosmic expanses and help the aliens mine enough crystals on each planet to build a rocket! Players will have the opportunity to send friends from other planets on thrilling space adventures, collecting parts for the rocket and assisting the aliens in reaching their homes. Functions: Mine Crystals: Click on the planet to help your new friends. Upgrades: Improve your devices to gather resources for the rocket. Space Adventures: Send your rocket on expeditions to other planets and explore new worlds.

Screenshots

Kernel King4 screens
PlanetCrystals Inc4 screens

Verdict

The call

The clearest difference is in-app purchases: PlanetCrystals Inc at none against Kernel King's 10. Kernel King's advantage is iOS requirement (8.0 vs 11.0). On price, update cadence, ads 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. Kernel King sells 10 one-off in-app purchases. PlanetCrystals Inc asks for nothing beyond the download.

UpkeepUpdate frequency

Kernel King ships an update every 6 days, PlanetCrystals Inc weekly. The most recent releases landed on October 22, 2026 and October 20, 2026 respectively.

Scorecard2 real differences · 8 level
Kernel King versus PlanetCrystals Inc: the parameters behind the verdict, then further details
ParameterKernel KingPlanetCrystals Inc
PriceFreeFree
Rating4.5 (40 ratings) — better—
Positive reviews89.4% of reviews—
Number of ratings40 — better—
Update frequencyEvery 6 days — betterWeekly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS8.0 — better11.0
Further details — not scored
Size46 MB121 MB
Age rating4+4+
DeveloperBlake EckertRuslan Shevtsov

Bugs and requests

Kernel King

Reported bugs

4 issues
  • Game crashes and forces user to home screen
  • Data loss when game crashes
  • Game won't start without reviewing or advertising
  • Glitches causing loss of progress

Requested features

4 requests
  • Timer mode to track kernels earned
  • Upgrade levels with multipliers for easier progression
  • Better tutorial or onboarding instructions
  • More diverse upgrades and features

PlanetCrystals Inc

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Kernel King

One-time10
  • Double Kernels Per Second$0.99
  • Double Kernels$0.99
  • Remove Ads$0.99
Show 7 more
  • Kernel Blast$1.99
  • Shaker of Salt$1.99
  • Treadmill$1.99
  • King Kernel$4.99
  • Salt Mine$9.99
  • Kernel Bomb$19.99
  • Forever 20x$49.99
None

PlanetCrystals Inc

No in-app purchases

Questions

Is Kernel King free?
Kernel King is free to download, with in-app purchases available.
Is PlanetCrystals Inc free?
PlanetCrystals Inc is free to download, with no in-app purchases.
Do Kernel King or PlanetCrystals Inc have ads?
Neither Kernel King nor PlanetCrystals Inc shows ads.
Which is updated more often, Kernel King or PlanetCrystals Inc?
Kernel King ships an update every 6 days, and PlanetCrystals Inc weekly. Most recently, Kernel King was updated on October 22, 2026 and PlanetCrystals Inc on October 20, 2026.

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