PACE comms, evacuation and shelter-in-place plans, supply checklists that do the math for your household, and a one-tap emergency screen — all offline, shareable phone-to-phone by QR. Free for Android.
Get DT Prep →RadioBook is a free Android app for ham radio — channel logs, a live Transmit Map, band conditions, net schedules, repeaters, and more, all in one place. This site tracks what's shipping in it. No account needed to read, no catch to download.
Download RadioBookChannel logs, a live Transmit Map (DX spots, POTA activation, elevation/coverage search, community repeaters), band conditions from real solar data, and more.
Free download 🛡️An emergency-preparedness app that works with zero internet, ever — evacuation, shelter-in-place, PACE communications, medical info, and supply checklists, shareable phone-to-phone via QR with no Wi-Fi needed.
Free download 📦A barcode inventory for everything you own — items with photos, quantities and categories, boxes inside boxes, and scan-to-pack. Works with RadioBook.
Coming Oct 20A channel reference for your radios — logbook, a live Transmit Map (DX spots, POTA activation, elevation/coverage search, community repeaters), band conditions, six color themes, and more. New in 1.3: Go Boxes with barcodes, per-radio presets, Export for CHIRP, and it works with InventoryBook. Free, no account required to try.