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• Tap a cylinder or refill to see all its details, with photos full screen • Snoozed reminders now come back as expected • Editing an old refill no longer switches the connected cylinder • Monthly spend and reports no longer add different currencies together • Forms keep your entries when you rotate the screen • Easier-to-read buttons and text throughout
Know how many days your gas cylinder lasts. Log refills, get a refill reminder.
How many days does your gas cylinder actually last? Cylinder Log answers that, then reminds you before the next one runs out. Log each cylinder swap — the date, what you paid, which supplier, and (if you weigh it) how much gas was really in it. After your second refill the app works out your household's own burn rate and shows one big number on the home screen: days left. It also predicts the date the cylinder will run empty and sends you a reminder a few days before, so you are never caught mid-cooking. WHAT YOU CAN DO • See days remaining and the predicted empty date for the cylinder you are using now • Log every refill: date, price, currency, weight, supplier, brand, receipt photo and notes • Get a reminder 1-7 days before your cylinder is likely to run out • Compare suppliers by price per kilogram, not just price per cylinder — this is how you spot an under-filled bottle that looks cheap • Track a double-cylinder setup and tap once to connect the spare • Browse a day-by-day refill timeline, colour-coded per cylinder • See monthly spend, days per cylinder and price per kilogram as charts • Export your whole history as CSV • Works in kilograms or pounds, so a 14.2 kg LPG bottle and a 20 lb propane tank both fit WHY PRICE PER KILOGRAM MATTERS Two suppliers can charge the same for a "full" cylinder and give you different amounts of gas. If you record the weight, Cylinder Log ranks your suppliers by what the gas actually cost per kilogram and the difference stops being invisible. PRIVATE BY DESIGN No account. No sign-in. No cloud. Every cylinder, refill and receipt stays on your phone, and nothing is uploaded anywhere. If you uninstall the app, the data goes with it. FREE AND PREMIUM Free: one cylinder with the full days-left countdown and its reminder, forever, plus the last 3 months of history. Premium: more than one cylinder, full history and charts, supplier comparison across every supplier, CSV export and no ads. Available as a monthly or yearly plan, or one lifetime payment. Cylinder Log keeps records and does arithmetic. It does not give safety advice — for anything to do with leaks, regulators, hoses or storage, contact your gas supplier or a qualified technician.