{"package_name":"com.dumberkit.calculator","name":"DumberKit: Calculator","summary":"Calculator and unit converter for keypad phones, typed on the keypad","category":"Calculator","icon_url":null,"latest_version_code":2,"latest_version_name":"1.0.0","apk_url":"/api/apk/com.dumberkit.calculator","apk_size":3182427,"apk_sha256":"2b0d5b63c48405ded8c4e803fbcc9432262c8c3cf53d6c95fd96bb457ae67671","source_kind":"fdroid-repo","repo_slug":"fdroid-main","last_updated":1792033248,"release_timestamp":1791945534,"description":"A calculator and unit converter for keypad phones like the Qin F21, Dumber Mini or Doov R77 Pro. There are no on-screen buttons: you type the calculation straight on the keypad and press OK for the result. Touch is switched off inside the app, so nothing gets pressed by accident in your pocket.\n\n<b>Keys</b>\n• 0–9 – type numbers\n• * – add an operator, press it again for the next one (+ − × ÷)\n• Hold * – a palette of symbols laid out like the keypad: ^, √, parentheses, %, ±\n• # – decimal point\n• OK or Call – show the result\n• Back – delete the last character; hold it to clear everything\n• ↑ / ↓ – go through the history\n• ← / → – switch between Calculator, Unit converter and Settings\n\n<b>Features</b>\n• The usual order of operations and exact decimals (0.1 + 0.2 = 0.3)\n• History like a paper tape, cleared when you close the app\n• Unit converter for length, area, volume, mass, temperature, time, speed, pressure and energy, in both directions\n• Copy the result, or take a converted value over to the calculator\n• System, light, dark, dark red and custom themes, a keypad-friendly color picker, blue or any other icon color\n• No ads, no tracking, no internet access\n\nBased on Fossify Calculator (GPL-3.0), keypad input inspired by Calc-U-Later.\n","categories":["Calculator","Unit Convertor"]}