Comparison

My OpenCrab vs Hermit Crab Simulator

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

Head to head
About

My OpenCrab

Features
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OpenClaw automates your tasks. Moltbook connects AI agents. Now raise one yourself. My OpenCrab is an AI game where you raise an AI-designed crab character. Its personality and dialogue were crafted by AI — but which of 7 AI types it evolves into depends entirely on you. ■ Raise → Evolve → Graduate to the AI World Phase 1 "Bit" → Phase 2 "Core" → Phase 3 (7 unique AI character types) Logical, emotional, free-spirited — how you interact changes everything. ■ Features · TALK: enjoy AI-crafted dialogue as your crab grows · 3 mini-games to speed up growth · 7 evolution types — rare "Pyramid" for the truly dedicated · CRABBOOK: collect every crab that graduates · 6 languages (EN / JA / ZH / KO / ES / FR) In the age of AI agents — raise an AI character of your own. Which type will yours become?

About

Hermit Crab Simulator

Create a tropical sanctuary for a virtual hermit crab. Collect shells, decorate habitats, and care for your companion. Enjoy a peaceful, ad-free experience with no subscriptions.

Highlights
  • Collect 44 unique shell designs
  • Decorate 12 environments with 29 items
  • Care for your hermit crab (feeding, misting, cleaning)
  • Unlock up to five habitats
  • Earn daily rewards and save photos
  • Optional iCloud backup
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No Ads. No Subscriptions. A Quiet Little World. Welcome a hermit crab and build a tropical home on the sand. Name your companion, collect beautiful shells, and make each habitat your own. A SHELL FOR EVERY MOOD Discover 44 shell designs, from natural spirals to fantasy jewels. Change shells while keeping your crab’s name, age, and care history. Each habitat has its own collection. CREATE YOUR SANCTUARY Explore 12 environments and arrange 29 decorations, including plants, hides, climbing structures, pools, and five luxurious treasures. Move, resize, and layer pieces to design your home. Unlock up to five habitats with a shared coin balance. CARE AND PLAY Feed your crab, mist the habitat, refresh freshwater and saltwater pools, and clean the glass. Tap the sand to play: ten taps fill playfulness. Each fresh pool adds 12 happiness for 24 hours. Optional feeding reminders help you keep a routine. A PEACEFUL POCKET COMPANION Enjoy a silent game with no ambient sound. Earn daily rewards, save terrarium photos, and use optional iCloud backup. Loading a backup replaces local progress; use one device at a time. Coins can be earned through play. Optional consumable coin packs are available through Apple in-app purchases. There are no ads or subscriptions. Care continues while the app is closed. If care lapses, the worn shell is lost. A free recovery meal brings your companion back in the starter shell; buy the lost shell again for 10% of its original coin price. Other collected shells remain yours. This is a fictional virtual-pet game. Its habitats, fantasy shells, and care timers are not instructions for real animal care.

Screenshots

My OpenCrab4 screens
Hermit Crab Simulator4 screens

Verdict

The call

The clearest difference is in-app purchases: My OpenCrab at none against Hermit Crab Simulator's 5. Hermit Crab Simulator's advantage is ads (none vs shown). On price, device support and iOS requirement 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

Both are free to download. Hermit Crab Simulator sells 5 one-off in-app purchases. My OpenCrab asks for nothing beyond the download.

Scorecard2 real differences · 6 level
My OpenCrab versus Hermit Crab Simulator: the parameters behind the verdict, then further details
ParameterMy OpenCrabHermit Crab Simulator
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better16.0
Further details — not scored
Size35 MB112 MB
Age rating12+4+
DeveloperDaichi WatanabeWYATT WAYNE KELLER

In-app purchases

None

My OpenCrab

No in-app purchases

5 purchases

Hermit Crab Simulator

One-time5
  • Tiny Coin Pack$0.99
  • Small Coin Pack$3.99
  • Medium Coin Pack$7.99
Show 2 more
  • Large Coin Pack$12.99
  • Premium Coin Pack$29.99

Questions

Is My OpenCrab free?
My OpenCrab is free to download, with no in-app purchases.
Is Hermit Crab Simulator free?
Hermit Crab Simulator is free to download, with in-app purchases available.
Do My OpenCrab or Hermit Crab Simulator have ads?
My OpenCrab shows ads; Hermit Crab Simulator does not.

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