Cellcove: Home Battery Map

Your home has more batteries in it than you think. Remotes, wall clocks, the smoke alarm, the weighing scale, key fobs, kids' toys, the doorbell, the thermometer, and the wireless keyboard. Nobody writes down which cell each one takes, how many, or when it was last changed — so you find out at 2am when an alarm chirps, or at the shop with the wrong pack in your hand. Cellcove is a small, focused app that fixes exactly that. MAP YOUR HOME ONCE Add each battery-powered device with its room, its cell format (AA, AAA, CR2032, 9V, LR44, 18650 and a dozen more, all built in) and how many cells it takes. Mark the ones that really matter — like a smoke alarm or a key fob — as critical. TAP ONE BUTTON WHEN SOMETHING DIES "Changed today" is the whole workflow. One tap logs the change and recalculates when that device will need attention again. IT LEARNS YOUR HOME After two logged changes, Cellcove stops guessing from a generic table and starts predicting from what actually happens in your house — weighted towards recent behaviour. Critical devices are flagged 20% earlier, so a smoke alarm is never a close call. KNOW WHAT TO BUY, EXACTLY The Buy tab turns everything that is due in your planning window into a single shopping list, minus the spares already in your drawer. SEE WHAT YOUR HOME COSTS IN CELLS Insights shows the cell mix in service, how many cells a year your home gets through, twelve months of replacements, and which device is quietly the hungriest. BUILT TO BE 100% PRIVATE Cellcove requests zero Android permissions — not even the INTERNET permission. An app without internet permission physically cannot send your data anywhere. No accounts, no cloud sync, no analytics, no crash reporting, and no ads. Everything stays strictly on your phone. YOUR DATA IS YOURS Export a readable JSON backup whenever you like using Android's system file picker. Restore it anytime or erase everything with one tap. KEY FEATURES • Search and filter devices by room or cell format • 4 sort orders, including "by due date" • Full replacement history per device • Light, dark, and system themes • Works completely offline forever