# Crabitat: Hermit Crab Care — Care reference and daily log

> Hermit crab care reference and daily tracking log with food database and calculators. (iPhone/iPad app by Ali3N Studios LLC.)

- Source: https://appshunter.io/ios/app/crabitat-hermit-crab-care/id6810483257 (this page in markdown: same URL + `.md`)
- Developer: [Ali3N Studios LLC](https://appshunter.io/developer/1881815512)
- Category: Lifestyle, Reference
- Price: Free with in-app purchases
- Rating: 5.00/5 from 3 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 26 MB
- Languages: American English
- Released: 2026-09-17
- Data updated: 2026-10-31
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/crabitat-hermit-crab-care/id6810483257/reviews.md

## What is Crabitat?

Crabitat is a hermit crab care reference that also keeps your log.

Most tracking apps are a log with a few tips bolted on. This one is the other way round: the care information came first, and the tracking is there because you open the app daily anyway.

FOOD DATABASE

Search by name and get an answer. Every entry says safe, caution or avoid — three states, not two, because keepers genuinely disagree about some foods and pretending otherwise helps nobody. Where sources differ, Crabitat names both and tells you which one it follows.

Search knows the other names for things, so cilantro finds coriander and prawn finds shrimp. There is a separate ingredient watchlist for reading labels, because a database of foods cannot tell you what is inside a bag of commercial pellets.

EMERGENCIES

Its own tab, works with no signal, and free forever — no purchase, no account, no exceptions. Search it the way you would say it: "can't find my crab", "he came out without a shell".

Covers naked crab, emergency energy mix, isolating a crab, digging up a molter, flooding, mold, condensation, humidity too high, grain mites, fungus gnats, ants, cockroaches, moving crabs, and keeping the tank warm through a power cut. There is also a page on what is NOT an emergency — the one that saves the most crabs.

FOUR CALCULATORS, ALL FREE

Tank size — count your crabs, get the minimum size and the nearest standard tank.
Substrate — bags of play sand, coir bricks, and how much you need for a proper depth.
Shell size — enter a caliper measurement in decimals or in sixteenths and get the opening range to shop for, adjusted for D-shaped and oval shells.
Hygrometer calibration — the 24-hour salt test, guided, and the offset is then applied to every humidity reading you log, so every later reading is right.

DAILY TRACKING

Today answers "what needs doing" before anything else: overdue first, then due today, then what happened recently. Logging is one tap.

Feeding is not a text box. You pick from the food database, so Crabitat can show you what has and has not come up lately. Save a combination you feed often and reuse it in a tap.

MOLTING

Log the day they went down and Crabitat holds a clear "this is normal, do not dig them up" state. There is no countdown and no progress bar, on purpose: a big crab can be under for a year, and a bar counting down to a made-up date is how molting crabs get dug up.

REMINDERS

Feeding, fresh water, salt water, substrate, and temperature and humidity checks. Set per tank, on the days you choose, at the time you choose. They stay at the time you picked through daylight saving, and they come back after a restart.

SHARED CARE

Going away? Send someone a code. They see what is due, they can log what they do, and every entry records who made it. They cannot change your settings or delete anything, and you can remove their access whenever you like.

FREE, AND WHAT IS NOT

No ads. Not ever, and not in the paid tier either.

Free forever: the entire care reference, the whole food database, every emergency page, all four calculators, the setup checklist, the ingredient watchlist, one tank with as many crabs as you keep, and logging with the last 30 days of history.

Crabitat Pro is a single purchase — not a subscription — and adds unlimited tanks, your full log history, temperature and humidity graphs, shared care, saved food mixes, the feeding calendar, data export, and more than five reminders.

ABOUT THE CARE INFORMATION

It comes from documents shared in a hermit crab keeping group, restated in Crabitat's own words with the source named on every screen. Where the group's files and other sources disagree, the app shows you both rather than quietly picking one.

Crabitat is not veterinary advice

## Key features

- Food database with safety ratings
- Emergency care guides
- Tank size and substrate calculators
- Shell size calculator
- Hygrometer calibration tool
- Daily tracking and logging
- Molting status tracking
- Customizable reminders

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Crabitat Pro | $4.99 | one-time |


## Is Crabitat safe?

Not enough ratings yet to assess Crabitat.

## Is Crabitat legit?

Crabitat: Hermit Crab Care appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Crabitat is 65 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/crabitat-hermit-crab-care/id6810483257/reviews.md

### 5/5 — The BEST Source for Hermit Crab Care!

*2026-09-24*

This app is a 20/10! It provides so much information that could help both beginners and experts. Love that it’s also backed by sources!

### 5/5 — Best App!

*2026-09-18*

This app is amazing for hermit crab parents. It has everything you need to track your crabs, for free! This is a much needed app for the community, and serves every purpose intended. 10/10!

## Frequently asked questions about Crabitat

### What is Crabitat?

Crabitat is a mobile application designed to assist hermit crab owners with comprehensive care information and daily tracking. It includes a food database, emergency guides, calculators, and logging features to help maintain a healthy environment for hermit crabs.

### Is Crabitat free to use?

Yes, Crabitat is completely free to use. The app states it has no ads and no paid tier, offering all its features without any cost to the user.

### What devices does Crabitat support?

Crabitat is available for iPhone and iPad devices, as indicated by its supported devices list. It is designed for Apple's mobile operating system.

### How often is Crabitat updated?

Crabitat was last updated on September 18, 2026, with version 1.1. This suggests a recent update, though the frequency of future updates is not specified.

### What is the age rating for Crabitat?

Crabitat has an age rating of 4+, making it suitable for a wide range of users, including younger individuals interested in pet care.

### Does Crabitat have ads?

No, Crabitat is ad-free. The app explicitly states that it has no advertisements, and this applies to all its features.

### How does Crabitat handle molting information?

Crabitat logs the day a hermit crab goes into molt and provides a clear 'do not dig up' status. It intentionally avoids countdowns or progress bars to prevent users from disturbing molting crabs.

### Can Crabitat be used offline?

The emergency care section of Crabitat is designed to work without a signal, making it accessible even in situations where internet connectivity is unavailable.

## Version history (last 4 releases)

### 1.3 — 2026-10-17

Crab photos now show up where you'd expect them: at the top of each crab's page and beside their name in your tank's list. Before this version a photo you added was saved and then shown nowhere, which made it look as though it hadn't worked.

Editing a crab is easier to find. Open a crab and tap "Edit details or add a photo" to change their name, species, size, shell notes, photo or the day you got them. After you save, you stay on the crab's page and see the change, instead of being sent back to the tank.

Also fixed:

• Removing a photo from a crab or a tank now sticks. Tapping Remove and then Save used to quietly put the old photo back.

• Replacing a photo now frees the space the old one used on your device.

Thanks to the reviewer who told us they couldn't find how to add a picture to their crab.

### 1.2 — 2026-09-22

Crabitat now works in metric, and the shell size calculator has arrived.

Every measurement in the app has a metric equivalent — temperatures, tank volumes, tank dimensions, substrate depth, and the shell measurements down to the millimetre. Not some of them. If a number is shown anywhere in the app, it is shown in the units you actually use.

The first time you open this version, Crabitat picks your system from your device's region. If that means switching you to metric, it tells you it has rather than asking you to choose before you can get in — and you can change it whenever you like in Settings.

Your existing records are untouched. Every reading, tank and log you have already saved stays exactly as you entered it. The change is in how measurements are displayed and typed in, not in what is stored.

Where it matters, you get both. Care guidance and the tank and shell calculators show both systems, because those are numbers you read once and then act on — you might be standing in a shop looking at a product label in the other system. The places you glance at repeatedly, like the tank card and the history graph, show one, so the screen stays readable.

The shell size calculator is now here. Enter a crab's weight or its current shell length and it suggests the shell sizes to offer, in inches and fractions or in millimetres. It has been part of what Crabitat offers for a while, and on iOS it was simply missing — the data shipped inside the app and nothing ever read it.

Terms and Privacy Policy are now readable inside the app, in full and offline, including on the purchase screen where you are actually being asked to agree to them. Previously they were links out to the website, which is no help on a plane or a bad connection.

The Pro screen now lists everything Pro includes. It was showing three of the eight features.

Also fixed:

• A temperature you logged could read back very slightly different — a reading entered as 29°C could come back as 28.9°C. It was being rounded before it was converted. It is not any more.

• Saving an edit to a tank looked as though it had been discarded: the screen behind kept showing the old details until you left and came back. It updates immediately now.

• Opening a tank and pressing Save no longer moves its dimensions. If you edited a tank's name and saved without touching its measurements, they could shift very slightly.

• Warnings in the care articles now look like warnings. Every highlighted note — including the ones about things that can harm a crab — was being drawn in the same mild blue as general information.

• Shell size suggestions now work for the largest shells. The biggest entries describe a minimum size rather than an exact one, and searching near them returned nothing at all.

### 1.1 — 2026-09-18

You can now backdate much further.

Before, you could only log an event as far back as the day you added that crab to Crabitat — so a new keeper could reach only a few days, and a molt found last month could not be recorded at all. Your crabs are older than the app is.

Now you can go back up to a year. Set a crab's acquired date and you can go back as far as that — so years of existing history can go in.

The same applies to tank logs: water changes, readings and everything else.

Why it matters most for molts: you do not watch a crab go down, you notice it is gone, usually days later. An event stamped with the moment you tapped makes a crab that has been under for a fortnight look like it went down today — and that number is the whole reason somebody digs.

### 1.0 — 2026-09-17

No release notes.

## Apps similar to Crabitat

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [CrabPod: Hermit Crab & Isopod](https://appshunter.io/ios/app/crabpod-hermit-crab-and-isopod/id6756488972) | 4.5 (2) | Free | Lifestyle |
| [Our Savior Lutheran Rockwall](https://appshunter.io/ios/app/our-savior-lutheran-rockwall/id1440762417) | — | Free | Lifestyle |
| [PurrTrack: Cat Health Tracker](https://appshunter.io/ios/app/purrtrack-cat-health-tracker/id6765758058) | 5.0 (1) | Free | Lifestyle |
| [IsoSphere](https://appshunter.io/ios/app/isosphere/id6788739108) | — | Free | Lifestyle |
| [Cornerstone Florence](https://appshunter.io/ios/app/cornerstone-florence/id1480773640) | 5.0 (9) | Free | Lifestyle |
| [Madame Jane Cannabis Co](https://appshunter.io/ios/app/madame-jane-cannabis-co/id6744329094) | 5.0 (15) | Free | Lifestyle |

## More apps by Ali3N Studios LLC

- [OneGo: Private Restroom Finder](https://appshunter.io/ios/app/onego-private-restroom-finder/id6759943504)
- [Pulse Lab: White Noise & Focus](https://appshunter.io/ios/app/pulse-lab-white-noise-and-focus/id6760435185)
- [EyeShot: Iris Camera & Editor](https://appshunter.io/ios/app/eyeshot-iris-camera-and-editor/id6760573387)
- [R3son8: Binaural Beats & Sleep](https://appshunter.io/ios/app/r3son8-binaural-beats-and-sleep/id6760603102)
- [EV Load Calc - NEC Compliant](https://appshunter.io/ios/app/ev-load-calc-nec-compliant/id6760872693)
- [PhotoLens: Astro Photo Editor](https://appshunter.io/ios/app/photolens-astro-photo-editor/id6761318474)

All apps by Ali3N Studios LLC: https://appshunter.io/developer/1881815512

---

*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.*