Quiet, useful apps for everyday things

Planners, converters and timers for Android that run without a connection. No sign-in, no ads, nothing collected.

Music & Audio

Chordbook

Guitar chord diagrams with spellings, a chord transposer and a capo helper.

Tools

Cut list planner for boards, pipes and rails, with kerf, trim and bars to scale

Shopping

Convert shoe, clothing and ring sizes: US, UK, EU, JP, cm and inches, offline

Education

Flashcards with a five-box review schedule, typed answers and text import.

Sports

Count laps with one big tap and see every split, average lap and pace.

Food & Drink

Bake a recipe in a different pan: multiplier, baker's %, oven and cup to gram

Weather

Sunrise, sunset, twilight and golden hour times for any place and any date.

Lifestyle

Aquarium volume, water changes, dosing and weight from your tank sizes

Travel & Local

Plan hiking time leg by leg: arrival times, breaks and a last light warning.

Quietfern makes small Android apps that keep your data on the phone. Write to support@quietfern.site.