Comparison

Krill Keeper vs Stockout Zero

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

Head to head
About

Krill Keeper

A relaxing simulation game where you nurture a deep-sea krill colony. Feed and clean your krill, hatch eggs to expand your colony, and discover 20 unique variants. Enjoy peaceful gameplay with realistic flocking physics and beautiful dark visuals.

Highlights
  • Realistic krill swarm simulation
  • Feed and clean krill
  • Hatch new krill companions
  • Collect 20 krill variants
  • Discover rare variants
  • Deep-sea dark palette visuals
Features
Read full description

Krill Keeper is a relaxing simulation game where you care for krill in a deep-sea tank. Feed your krill, keep the tank clean, and hatch eggs to welcome new companions. Watch them swim together in realistic flocking patterns powered by boid physics, and collect 20 unique krill variants. Key Features: - Realistic krill swarm simulation with boid flocking physics - Feed and clean to keep your krill happy and healthy - Hatch eggs to recruit new krill companions - Collect 20 krill variants with 1 to 4 star rarity - Discover rare variants through milestones and random drops - Beautiful deep-sea dark palette visuals Take a break and find peace with the tiny creatures of the deep sea.

About

Stockout Zero

Features
Read full description

Stockout Zero is a simple incremental inventory game about turning tiny stock checks into unstoppable automation. Tap to check stock, earn money, buy upgrades, and build systems that push you closer to zero stockouts. At first, it is just a small store task. Soon, it becomes a full inventory operation. Features: - Simple tap-based gameplay - Upgrade-based progression - Automation systems - Fast clear leaderboards with Game Center - Daily, weekly, and all-time ranking challenges How fast can you reach Stockout Zero?

Screenshots

Krill Keeper3 screens
Stockout Zero3 screens

Verdict

The call

The clearest difference is price: Krill Keeper at Free against Stockout Zero's $0.29. Krill Keeper also leads on iOS requirement (16.0 vs 18.0). Stockout Zero's advantage is ads (none vs shown). On update cadence, in-app purchases 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

Krill Keeper is free to download; Stockout Zero costs $0.29 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Krill Keeper ships an update every 9 days, Stockout Zero weekly. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

Scorecard3 real differences · 6 level
Krill Keeper versus Stockout Zero: the parameters behind the verdict, then further details
ParameterKrill KeeperStockout Zero
PriceFree — better$0.29
Rating5.0 (7 ratings) — better—
Number of ratings7 — better—
Update frequencyEvery 9 daysWeekly — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better18.0
Further details — not scored
Size68 MB24 MB
Age rating4+4+
DeveloperNante StudioMakoto Fukuoka

In-app purchases

None

Krill Keeper

No in-app purchases

None

Stockout Zero

No in-app purchases

Questions

Is Krill Keeper free?
Krill Keeper is free to download, with no in-app purchases.
Is Stockout Zero free?
Stockout Zero costs $0.29, with no in-app purchases.
Do Krill Keeper or Stockout Zero have ads?
Krill Keeper shows ads; Stockout Zero does not.
Which is updated more often, Krill Keeper or Stockout Zero?
Krill Keeper ships an update every 9 days, and Stockout Zero weekly. Most recently, Krill Keeper was updated on October 7, 2026 and Stockout Zero on October 9, 2026.

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