Independent software company + consultancy
Thirty Sevenbuilds software.
We build and operate our own portfolio. We help founders and small teams turn clear ideas into shipped, dependable software.
The portfolio
Software we own and operate.
A focused portfolio across communication, creativity, healthcare, research, and practical tools. Each product keeps its own identity; Thirty Seven provides the operating home behind it.
01Exercise prescription software for rehab clinicians
Ereps
Exercise prescription software with evidence-based rehab protocols and outcome tracking.
02Screenshot stitching app for iPhone and Android
Stitch It
Combine screenshots into one long image — a whole conversation in a single picture.
03Send-and-receive fax app for iPhone, iPad, and Mac
Fax It
Send with page credits, or choose a plan with your own fax number.
04Video reframing app for iPhone
ReShoot
Convert landscape video to portrait for TikTok, Reels, and Shorts by moving your phone.
05AI coloring page generator for iPhone and iPad
ColorCub
An AI coloring page generator — describe anything, get a printable page in seconds.
06Barometer and altimeter app for iPhone
HowHigh
A barometric altimeter for iPhone — track elevation gain and air pressure in real time.
07Funny and unusual gift catalog
Goose Gifts
The internet's least serious gift catalog.
From the company
News & Notes
Product releases, operating decisions, and occasional notes when there is something useful to share.
Product update / August 11, 2026
Fax It Comes to Mac
Fax It now has a native Mac experience for sending, receiving, reviewing, and sharing faxes, with pay-per-page credits or an optional number plan.
Press release / February 2026
ReShoot Lets You "Re-Shoot" Any Video Using Your Phone's Motion Sensors
New iOS app turns landscape footage into polished portrait content without desktop re-editing.
Press release / February 2026
Stitch It! 2026 Product Update
Updated release with accurate stitching workflow, horizontal support, and correct platform links.
From the archive / August 9, 2026
ColorCub Arrives on the App Store
ColorCub launched with a simple premise: describe a coloring-page idea, make it your own, and move easily between the screen and paper.
- View all News & NotesProduct updates, company history, and press releases.
Selected client work
Have something useful to build?
Our deepest experience is in native iOS, with shipped work across Android, web, backend systems, and the practical work after launch.