Thirty Seven, Inc.
HowHigh
A precision altimeter for iPhone that converts barometric pressure changes into distance travelled—ideal for hikes, amusement rides, and anywhere a tape measure can’t reach.
- iOS
- Utilities
- Navigation
Why it matters
- Reads altitude gain in inches, feet, or yards in real time
- Built for iPhone barometer hardware—no data connection required
- Perfect for measuring large objects, staircases, or scenic climbs
In product
