Reign Days
iPhone · Android · Web
Live puzzle tournaments. Sudoku, Minesweeper, Nonograms and Word Search, where everyone in a tournament plays the same board. Climb the leaderboard, then send a friend a code and dare them to beat your time.
Out now
HeadTune
Android · iPhone coming soon
A drum tuner that listens to each hit through your phone's microphone and tells you what to do next: how far to tune each head, which lug to tighten, and when it's in.
Whenvelope
Web · iPhone and Android coming soon
“Open when…” letters for your kid's big steps: off to college, moving out, getting married, a first baby. Fill envelopes with letters, photos, video and gift cards, and they open them one at a time, on a timer you control.
In the works
TopSet
iPhone · Apple Watch
A workout tracker built around reverse pyramid training: heaviest set first. Starting a workout fills in today's weights and reps from last time. The rest timer sits on the Lock Screen, sets can be logged from your Apple Watch, and workouts save to Apple Health.
Gymnastics Coach
iPhone
Film a skill or a whole routine and get feedback on technique. Drill one skill rep by rep and track it over weeks, or record a routine and see it judged skill by skill, with an estimated score.
Stud Atlas
Web
Turn a picture into a brick mosaic you can actually build: an optimized piece layout, numbered build steps, a parts list with estimated prices, and an order file ready for BrickLink or GoBricks.
About
Hollow Wolf LLC is a small, independent software studio. We design, build and support every app ourselves, from the first sketch to the store listing.
We like apps that do one job well and explain themselves plainly. Each of ours starts with a real problem: a fairer way to race friends at puzzles, a faster way to tune a drum, a letter that opens at just the right moment.
Contact
For questions, support, partnerships or press, email matt@hollow-wolf.com. We read everything and reply as quickly as we can.
Need help with a particular app? Its website has support and privacy details too.