Lugline
Drum tuner that measures every lug and plans the whole kit.
All apps
Every Fernhart Labs app works offline, needs no account and keeps your data on your phone. They are free with ads; most have an optional one-time purchase that removes them.
- Music and sport 4
- Sewing, knitting and making 5
- Collecting 1
- Car audio 1
- Backyard birds and livestock 7
- Home and garden calculators 7
Music and sport
Stringbed
String tension meter for tennis, squash and badminton rackets.
Fair Innings
Fair lineups and rotations for youth baseball and softball coaches.
Pianowise
Piano tuner app: every key free, measured stretch, checks and unisons.
Sewing, knitting and making
Sloper Studio
Made-to-measure sewing patterns drafted from your measurements.
Yokecraft
Custom-fit sweater pattern generator: raglan, yoke or drop shoulder.
Makerledger
Pricing calculator for handmade goods, with Etsy and craft-fair fees.
Spoolwise
3D printer filament inventory, print costs and drying log.
Quiltsmith
Quilt designer and quilting calculator: cutting plan and yardage.
Collecting
Coinfold
U.S. coin album: state quarters, Lincoln cents and every mint mark.
Car audio
Boxsmith
Subwoofer box designer with real simulation, port sizing and cut sheets.
Backyard birds and livestock
Hatchwise
Egg incubation tracker with candling, lockdown and hatch reminders.
Hutchwise
Rabbit breeding records with kindling reminders, litters and pedigrees.
Caprawise
Goat milk, kidding and health records with withdrawal holds.
Poultry Feed Calculator
Layer feed for your flock: bags, cost and days per bag.
Pig Feed Calculator
Feed to raise pigs to market weight, by feed conversion.
Cattle Feed & Hay Calculator
Hay for your herd this winter: bales, tons and waste.
Livestock Feed Calculator
Feed planner for mixed farms: how long stock lasts.
Home and garden calculators
Paint Calculator
How much paint and how many cans for a room.
Roof Pitch Calculator
Roof pitch as X:12, angle in degrees and rafter length.
Tile Calculator
Tiles and boxes for a floor or wall, with waste.
Gravel Calculator
Gravel in tonnes and bulk bags for any area and depth.
Mulch Calculator
Bags of mulch for your beds at the right depth.
Stair Calculator
Steps, riser height, run and stringer length.
Wallpaper Calculator
Rolls of wallpaper by the strip (drop) method.