Comparison

Zero Out vs Pasterium C

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

Head to head
About

Zero Out

This game helps you spend the exact remaining balance on your Apple account by purchasing virtual cat food. Watch your pixel cat grow as you clear your balance and prepare to switch App Store regions.

Highlights
  • Spend exact Apple account balance
  • Purchase virtual cat food
  • Raise and bond with a pixel cat
  • Collect 28 different foods
  • Works in 175 regions
  • No account or data collection
Features
Read full description

Zero Out turns a tedious chore into a delight: clearing the leftover balance on your Apple account — by feeding an adorable pixel cat. WHY ZERO OUT? Want to switch your App Store country/region? Apple requires you to spend your remaining balance first. Those odd leftover cents are too small to buy anything — until now. HOW IT WORKS 1. Enter your current Apple account balance 2. Zero Out instantly computes a combination of virtual cat foods that adds up to the exact amount 3. Purchase them via standard In-App Purchase — your balance hits zero, precisely 4. Every food you buy is automatically fed to your pixel cat. Nothing goes to waste! RAISE YOUR PIXEL CAT - 28 delicious foods to collect, from Dried Fishies to the Nine-Tier Feast - Feed, pet, and check in daily to earn EXP and bond - Watch your kitten grow from Kitten to Grand Elder - Unlock 14 achievements and complete the Food Dex FEATURES - Works in all 175 regions — prices are read live from the App Store in your local currency - Exact zero-out algorithm with a closest-combo fallback - No account, no sign-up, no data collection - 100% standard StoreKit purchases — safe and secure Clear your balance. Feed your cat. Switch regions with ease.

About

Pasterium C

Features
Read full description

Spend quiet days with your fish in a little aquarium. Pasterium C is a 3D aquarium set in a softly muted pastel room, where you enjoy everyday life with your fish. You start with three little fish in a fishbowl. Give them names, feed them, and watch them slowly grow and bond with you. - Every fish has its own personality and looks Even fish of the same kind each have something special. Keep an eye on growth, bond, and health on each fish’s card. Fish that feel weak can get care, or rest at boarding. - A life that grows a little every day New friends and ornaments arrive, and sometimes eggs are laid. On day 7 the living room tank opens, and on day 14 you get an auto feeder you can use in any tank. - Make the tank your own Choose plants, ornaments, sand colors, and lighting to decorate. Save up to 5 favorite layouts for each tank. - Learn about creatures and ornaments in your journal Look back on each day in the diary, and read about each one in the creature and ornament guides. - Shifting light and gentle sounds The light in the room changes from morning to night and with the seasons. Watch your fish from underwater, and keep photos or short videos. Choose between the original music and lofi, with different tracks for morning, day, and night. You can choose your tap sounds too. - Start for free, then visit the study or the round tank The fishbowl and the living room are free. “Study with a Bookshelf” and “Sunset City & Round Tank” are each a one-time in-app purchase. The study adds a big tank about 120 cm wide, along with Discus, Arowana, River Stingray, and Axolotl. The round tank adds a glass tank about 130 cm across by a window over a sunset city, a lighthouse harbor, and 4 new kinds: Penguin Tetra, White Cloud Minnow, Glass Catfish, and White Medaka. Available in Japanese, English, Korean, Arabic, Simplified and Traditional Chinese, Spanish, French, German, and Portuguese. No ads and no account sign-up. Everyday play works offline. Buying and restoring in-app purchases needs a connection. Your fish, diary, and other records are saved in the app. Deleting the app also deletes these records, but photos and videos you saved to the Photos app remain.

Screenshots

Zero Out4 screens
Pasterium C4 screens

Verdict

The call

Zero Out and Pasterium C are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Zero Out sells 10 one-off in-app purchases and Pasterium C sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Zero Out ships an update every 2 weeks, Pasterium C every 6 days. The most recent releases landed on October 31, 2026 and November 7, 2026 respectively.

ScorecardNo meaningful differences
Zero Out versus Pasterium C: the parameters behind the verdict, then further details
ParameterZero OutPasterium C
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 weeksEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone
Requires iOS17.016.0 — better
Further details — not scored
Size2 MB19 MB
Age rating4+4+
Developer方言 高KENICHI TAKAOKA

In-app purchases

10 purchases

Zero Out

One-time10
  • 小鱼干$0.29
  • 猫饼干$0.39
  • 温牛奶$0.49
Show 7 more
  • 三文鱼$0.79
  • 鸡蛋羹$0.90
  • 鸡肉松$0.95
  • 鲜鸡肝$1.00
  • 鳕鱼块$1.19
  • 猫薄荷$1.29
  • 海鲜拼$1.99
2 purchases

Pasterium C

One-time2
  • Sunset City & Round Tank$2.99
  • Study with a Bookshelf$2.99

Questions

Is Zero Out free?
Zero Out is free to download, with in-app purchases available.
Is Pasterium C free?
Pasterium C is free to download, with in-app purchases available.
Do Zero Out or Pasterium C have ads?
Neither Zero Out nor Pasterium C shows ads.
Which is updated more often, Zero Out or Pasterium C?
Zero Out ships an update every 2 weeks, and Pasterium C every 6 days. Most recently, Zero Out was updated on October 31, 2026 and Pasterium C on November 7, 2026.

Other comparisons