Comparison

Platform Defense vs Krill Keeper

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

Head to head
About

Platform Defense

Defend against waves of monsters by strategically placing traps and utilizing special heroes. Survive 100 levels of elemental challenges.

Highlights
  • Unlockable special heroes
  • Variety of traps to deploy
  • Unique elemental monsters
  • 100 waves of defense
  • Strategic trap placement
Features
Read full description

Can you be the hero? Monsters are kidnapping people! You are the only one left. Defend yourself against monsters. And survive through 100 waves! - Special heros to unlock - Source pans to shoot - Unique traps to place - All different elemental monsters to DEFEAT! Trap Description - Spike: Gives damage to enemies that step on. - Freezer: Freezes enemies that are in front of it when it opens .(Ice element) - Wall: Stops enemies for a while. - Wall Spike: Attacks slowly but gives heavy damage. - Flask: 1 time use bomb. - Gas Burner: Gives fire damage to enemies that step on.(Fire element) - Spike Drop: Spike drops are falling on enemies' head. - Bomb: Blows after a second when a enemy touches it. - Ice ball: Fires an ice ball. (Ice element) - Boulder: Press enemies so that they can move for a while. - Fire: Upgrade version of Gas Burner(Fire elemenet) - Big Hand: Push enemies to a lower level. Element description - Fire: Gives 2x damages when enemies start to burn. Gives damages gradually until the fire is extinguished. - Ice: Freezes enemies and extinguishes fire.

About

Krill Keeper

A relaxing aquarium simulation where you nurture a vibrant colony of krill. Feed them, maintain their habitat, and discover unique species to expand your underwater world.

Highlights
  • Raise a krill swarm
  • Feed and clean tank
  • Hatch eggs
  • Collect 36 krill types
  • Name favorite krill
  • Play Bubble Pop mini-game
  • Daily free food
Features
Read full description

Krill Keeper is a calm aquarium game. Raise a swarm of tiny krill in a glowing deep-sea tank and watch them swim together. Feed them, keep the water clean, and hatch eggs to grow your colony. Any egg can hold a new kind of krill, from common all the way to legendary. What you can do: - Watch your krill swim together as one living swarm - Feed your krill and clean the tank to keep them happy - Hatch eggs in up to 3 incubators and see the time left on each - Collect 36 kinds of krill across 4 rarities - Give your favorite krill their own names - Play Bubble Pop: make 10 to pop bubbles and win food - Get free food every day Leave the tank open and unwind, or drop in for a minute between things.

Screenshots

Platform Defense4 screens
Krill Keeper4 screens

Verdict

The call

The clearest difference is in-app purchases: Krill Keeper at none against Platform Defense's 10. Krill Keeper also leads on rating (5.0 vs 4.6) and review sentiment (100% vs 80%). Platform Defense's advantage is ads (none vs shown) and ratings volume (29 vs 9). On price, update cadence 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. Platform Defense sells 10 one-off in-app purchases. Krill Keeper asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Krill Keeper holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 29 and 9 respectively. Written reviews point the same way: 80% of Platform Defense's written reviews are positive against 100% of Krill Keeper's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 2, 2026 and November 9, 2026 respectively.

Scorecard7 real differences · 3 level
Platform Defense versus Krill Keeper: the parameters behind the verdict, then further details
ParameterPlatform DefenseKrill Keeper
PriceFreeFree
Rating4.6 (29 ratings)5.0 (9 ratings) — better
Positive reviews80.5% of reviews100.0% of reviews — better
Number of ratings29 — better9
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS6.0 — better16.0
Further details — not scored
Size44 MB190 MB
Age rating9+4+
DeveloperParkPillNante Studio

Customer experience

Platform Defense

All ratings29 ratings
Positive96.6%
Neutral0.0%
Negative3.4%
Written reviews41 reviews
Positive80.5%
Neutral7.3%
Negative12.2%

Krill Keeper

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

10 purchases

Platform Defense

One-time10
  • Small Coin$0.99
  • Bree$0.99
  • Remove Ads/Double Coin$0.99
Show 7 more
  • Middle Coin$1.99
  • Andrew$1.99
  • Blue Stars$1.99
  • Big Coin$4.99
  • Unlock All Heroes$4.99
  • Unlock All Friends$5.99
  • Huge Coin$9.99
None

Krill Keeper

No in-app purchases

Questions

Is Platform Defense free?
Platform Defense is free to download, with in-app purchases available.
Is Krill Keeper free?
Krill Keeper is free to download, with no in-app purchases.
Which has better reviews, Platform Defense or Krill Keeper?
Krill Keeper is rated higher. Platform Defense averages 4.6 out of 5 from 29 ratings, while Krill Keeper averages 5.0 from 9 ratings.
Do Platform Defense or Krill Keeper have ads?
Krill Keeper shows ads; Platform Defense does not.
Which is updated more often, Platform Defense or Krill Keeper?
Platform Defense ships an update every 2 weeks, and Krill Keeper every 2 weeks. Most recently, Platform Defense was updated on November 2, 2026 and Krill Keeper on November 9, 2026.

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