# AquaStep: Walk to Hatch Fish — Idle Step Counter & Cozy Tank

> Idle Step Counter & Cozy Tank (iPhone/iPad app by Lu Cheng Wei.)

- Source: https://appshunter.io/ios/app/aquastep-walk-to-hatch-fish/id6805879120 (this page in markdown: same URL + `.md`)
- Developer: [Lu Cheng Wei](https://appshunter.io/developer/1119072701)
- Category: Games, Casual, Simulation
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 27 MB
- Languages: American English, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2026-09-08
- Data updated: 2026-10-31

## What is AquaStep?

A breathing, peaceful aquarium right in your pocket.

TinyAquarium is a gentle idle fish-keeping experience designed for calm and mindfulness. There are no aggressive daily streaks or stressful timers. Even when the app is closed, your fish keep swimming peacefully and blowing bubble coins for you to harvest whenever you return.

■ Walk to Hatch Real Life
Eggs incubate with your daily step count. Whether you are commuting, taking a walk, or walking your dog, every single step nurtures the life within the shell. When ready, gently tap the shell to welcome your new fry into the light.

■ Over 1,000 Species to Discover
From beloved neon tetras and fancy guppies to mystical deep-sea creatures and prehistoric legends. Complete all 8 encyclopedia categories one discovery at a time.

■ Gene Breeding & Rare Mutations
Pair mature male and female fish in the Breeding Lab. Genetics shape their offspring with chances of striking rare mutations. Discover secret formulas to hatch glowing Overlords and Mythical Awakened forms.

■ 50 Hand-Drawn Decors & 7 Water Themes
Driftwood, aquatic plants, rock formations, coral reefs, and ancient ruins. Freely drag, drop, and style your tank across 7 ambient water themes, including Tropical Forest, Deep Ocean, and Zen Garden.

■ Passive Bubble Coin Production
Fish continuously produce bubble coins while you are away. Open the app to pop rows of floating bubbles and use your earnings to expand your tank and upgrade your food supplies.

■ Live Home Screen Widget
Glance at your aquarium, monitor step progress, and feed your fish with a single tap directly from your iOS Home Screen.

■ Lo-Fi Focus Timer & Ambient Vinyl
Procedurally generated soothing Lo-Fi vinyl soundscapes paired with a customizable pomodoro timer. Pick your favorite companion fish to swim alongside your study or work sessions.

■ Serverless P2P Local Trading
Exchange live fish and procedural vinyl records directly with friends nearby over Bluetooth and local Wi-Fi, without needing any server or login.

—
・No forced ads; optional rewarded video ads are available on iOS. No account registration required
・Seamless iCloud sync across all your devices
・Supports portrait and immersive landscape views

In-app purchases are optional: bubble coin packs (consumable) and a one-time TinyAquarium Pro unlock (+25% coin production rate, +8 food jar slots, +10% breeding mutation rate, three exclusive water themes and more decoration slots). Everything is reachable by playing — buying only changes the pace.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Deep-Sea Pearl Jar | $2.99 | one-time |
| Pirate's Overflowing Chest | $5.99 | one-time |
| Poseidon's Golden Vault | $14.99 | one-time |
| Sunlit Starter Pouch | $0.99 | one-time |
| TinyAquarium Pro | $4.99 | one-time |


## Is AquaStep safe?

Not enough ratings yet to assess AquaStep.

## Is AquaStep legit?

AquaStep: Walk to Hatch Fish appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for AquaStep is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.9 — 2026-10-13

• New "Cold-Room (Fish Storage)": safely store cherished fish with frozen stats to boost tank smoothness
• Fixed responsiveness and tactile feedback for "Return to Tank" in Fish Storage
• Optimized 30 FPS rendering loop with active fish cache for smoother animation
• Fish Storage expansion & improved dual-device synchronization

### 1.8 — 2026-10-05

• All 1,176 species reviewed and redrawn: hundreds now have their own unique look, so no more look-alike fish
• Fixed a character in the Deep-sea Comb Jelly name

### 1.7 — 2026-10-01

This update:
- Algae is now off by default, with a toggle in Settings
- More reliable cross-device sync: coins, hearts, hatching and achievement rewards no longer get lost or duplicated
- New periodic surveys with a reward you choose yourself
- Milestone guidance: your next goal is visible at a glance
- Gacha and breeding now reveal rarity first; the species waits until hatching

### 1.6 — 2026-09-24

- Lowered starter egg threshold to 100 steps for instant day-1 hatching gratification.
- Added Daily Walk Settlement card with step tracking, heart energy conversion, and cozy notes.
- Home Screen Widget now supports live nursery incubator egg progress and percentage display.
- Enhanced Polaroid Share Card with signature quote: "Every step you take warms your eggs."
- Resolved a critical wallet profile write-lock issue on fresh installs.
- Vinyl player now supports 3-state playback (loop all, shuffle, loop single).
- General performance and tank physics optimizations.

### 1.5 — 2026-09-21

• Long-press a fish and drag to carry it somewhere new
• 264 creatures get their own look: sunfish, axolotls, turtles, squid and ammonites now look like themselves
• Wipe algae off the glass; each tank grows its own
• Releasing an egg before it hatches no longer uses up the incubator box, and breeding can open an incubator slot right away
• One record shelf shared by all tanks: no more "missing" records when you switch tanks
• Fixed decorations that could go missing when syncing between devices (they come back automatically)
• Stronger save protection, and 113 corrected scientific names

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## More apps by Lu Cheng Wei

- [Random Quote & Picture](https://appshunter.io/ios/app/random-quote-and-picture/id1119072702)
- [ISBN Book Manager](https://appshunter.io/ios/app/isbn-book-manager/id6756864904)
- [OneClickListen](https://appshunter.io/ios/app/oneclicklisten/id6758035053)
- [Web to PPT (Editable) - Mobile](https://appshunter.io/ios/app/web-to-ppt-editable-mobile/id6758281740)
- [FixedFocus: Digiscoping Cam](https://appshunter.io/ios/app/fixedfocus-digiscoping-cam/id6761117765)
- [EpubAloud: EPUB to Audiobook](https://appshunter.io/ios/app/epubaloud-epub-to-audiobook/id6761471444)

All apps by Lu Cheng Wei: https://appshunter.io/developer/1119072701

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-31.*