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.

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.