Pixel Islet vs Pasterium C
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Pixel Islet
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A tiny pixel pet moves into a cozy 3D room on your iPhone. Feed, play, rest, clean, and pet. The way you care decides which adult form it grows into. Raise it differently and you get a different result: a relaxing idle pet game where the goal is to complete the whole collection. ▼ Features 【Live together in a 3D room】 The room has real depth. Tap the floor and your pet walks over, pet it and it beams, and it lets you know when it is hungry. When the room gets messy, you can actually see the dust and stains, so you know when to clean. The light shifts from morning to noon, dusk, and night, and at bedtime your pet lies down in its bed and sleeps. 【Grown-ups relax on a 3D island】 Once a pet reaches its adult form, you can let it live on the island. Spin the island with a swipe and watch your friends wander between the trees and the pond. At night, everyone sleeps. 【Home Screen and Lock Screen widgets】 Put the pet you're raising on your Lock Screen or a small widget to see its mood and progress at a glance. A wide widget shows your island friends (up to 8). 【They also live in the Dynamic Island (supported models)】 On supported iPhones, your pet stays in the Dynamic Island at the top of the screen and shows what it is up to at a glance: the time left on an outing, a souvenir waiting for you, napping, or feeling hungry. Even with the app closed, it switches on its own when your pet comes home or goes to bed. 【Your app icon becomes your pet】 Choose "Current pet" in Settings and the app icon on your Home Screen becomes the pet you are raising right now. When it evolves, the icon changes too. 【Evolution shaped by your care】 Forest, flame, water, star... the way you care decides which adult form a child grows into. The same species can end up looking completely different. 17 species plus one secret, and 84 forms to complete the collection. In the collection you can spin each 3D figure with your finger, read every pet's little story, and see its postcards. 【Bonds and the island】 Even after growing up, petting keeps raising the bond. Let a favorite live on the island and it brings you coins every day according to its bond level: a warm little economy. 【Minigames】 - Fruit Catch: catch falling fruit on your pet's head in the 3D room (while your pet is out or asleep, an island friend catches in its place) - Expedition: pick 2 to 4 island friends for an auto battle you watch unfold (3D) - Memory Match: a card-matching game with pets from your collection (unlocks at 4 registered forms) 【Outings and travel postcards】 Send your pet on an outing and it comes back later with coins, XP, and a souvenir. While it is out, it is not in the room, and it always comes home by bedtime. There are 20 souvenirs to collect. Each trip also brings a postcard of your pet, sometimes with island friends, at one of 12 places, from flower fields to hot springs. Time of day and weather vary, and rare ones show rainbows, whales, auroras, and more. Favorite, save, and share them in the Postcards tab. 【Daily task】 Clear one task a day for coins and XP. Watch a video to double the reward. ▼ Play at your own pace - Hunger and happiness fall slowly, and a short absence never kills your pet (only 48 hours of complete neglect does) - If hunger and happiness have never hit zero, a gentle notification lets you know before they do (until your pet grows up, when notifications are on) - No penalty for coming back after a while. The design is "oh, welcome back" - When a pet is fully grown, choose whether it graduates into a memory or keeps living on the island - Tap "Back up now" in Settings to save to iCloud and continue after switching phones or reinstalling Spend a little time with a little life on a little screen. Free to play with ads; a one-time Remove Ads purchase turns them off. Put Pixel Islet in your pocket today. Privacy Policy: https://rinblog.org/apps/pixel-pocket/support/privacy/ Terms of Use: https://rinblog.org/apps/pixel-pocket/support/terms/
Pasterium C
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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 The fishbowl and the living room are free. “Study with a Bookshelf” is a one-time in-app purchase. It adds a big tank about 120 cm wide, along with Discus, Arowana, River Stingray, and Axolotl. 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 the in-app purchase 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
Verdict
The clearest difference is ads: Pasterium C at none against Pixel Islet's shown. On price, 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
Both are free to download. Pixel Islet sells 1 one-off in-app purchase and Pasterium C sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Pixel Islet ships an update every 10 days, Pasterium C every 5 days. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.
| Parameter | Pixel Islet | Pasterium C |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 days | Every 5 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.2 | 16.0 — better |
| Further details — not scored | ||
| Size | 58 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Sho Iwasaki | KENICHI TAKAOKA |
In-app purchases
Pixel Islet
- Remove Ads$5.99
Pasterium C
- Study with a Bookshelf$2.99









