Idle Fish Spa vs Krill Keeper
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Idle Fish Spa
Build and manage your own fish spa empire. Serve customers, discover new fish foods, and upgrade your aquatic inhabitants to earn idle income. Enjoy a relaxing adventure as you expand your business.
- Manage fish spa
- Expand fish empire
- Discover fish food
- Earn idle income
- Upgrade fish
- Unlock fish
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Fish pedicures employ hundreds of tiny toothless carp (Garra rufa) to nibble the dead skin from your feet and were hugely popular in North America and Europe towards the end of the 2010s. Start building a fish empire through your Fish spa, find out what's best fruit to feed your fish. Discover the different world and enjoy your adventure. Serve your customers in your Fish Spa become a Spa tycoon. Other than watching the fish around the foot, you could: - Manage your idle fish spa; - Expand your fish empire; - Discover the food - Get idle income; - Enjoy upgrading your fish; - Unlock the fish; - Remove dead foot skin; - Challenge yourself!
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.
- 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
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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
Verdict
The clearest difference is rating: Krill Keeper at 5.0 against Idle Fish Spa's 4.7. Krill Keeper also leads on update cadence (every 2 weeks vs every 2 months). Idle Fish Spa's advantage is ratings volume (28 vs 9) and iOS requirement (10.0 vs 16.0). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Krill Keeper holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 28 and 9 respectively.
Idle Fish Spa ships an update every 2 months, Krill Keeper every 2 weeks. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.
| Parameter | Idle Fish Spa | Krill Keeper |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (28 ratings) | 5.0 (9 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 28 — better | 9 |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 10.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 210 MB | 190 MB |
| Age rating | 4+ | 4+ |
| Developer | Yojoy | Nante Studio |
Customer experience
Idle Fish Spa
Krill Keeper
In-app purchases
Idle Fish Spa
No in-app purchases
Krill Keeper
No in-app purchases
Questions
Is Idle Fish Spa free?
Is Krill Keeper free?
Which has better reviews, Idle Fish Spa or Krill Keeper?
Do Idle Fish Spa or Krill Keeper have ads?
Which is updated more often, Idle Fish Spa or Krill Keeper?
Other comparisons
