by.coach
A coaching platform for personal trainers and strength coaches.
The brief
Personal trainers are stuck. Most of them manage client programs through spreadsheets and PDFs that clients have to pinch-zoom on a phone at the gym. Off-the-shelf coaching apps exist, but they are heavy, expensive, and force a download from the App Store on every new client. We were asked to design and build a calmer, faster alternative — a platform a trainer could set up in twenty minutes and a client could open with a single magic-link tap.
What we built
The result is bycoach.io — a free coaching platform with a periodized program builder, a library of 1,200+ exercise videos with form cues, a phone-native client app delivered through a magic link (no App Store install, no forgotten passwords), and a trainer dashboard for managing the full client roster.
The approach
- Spreadsheet-grade flexibility, app-grade UX. A drag-and-drop program builder where moving a block of sets feels as direct as dragging cells.
- Magic-link client onboarding. No app-store review, no forgotten passwords, no install friction. The client taps a link in a text message and is in the workout.
- Smart weight calculation. Inverse-Epley math under the hood so trainers prescribe in %1RM and clients see real kilos at the bar.
- 1,200+ exercise videos with form cues. A library trainers can drop into a program in one click, with the cue text already attached.
- Trainer dashboard. Roster view, progress tracking, adherence flags — the trainer sees attrition before it happens, not after.
The result
The product is free for trainers, with no client caps and no card required. Founding members lock in zero fees permanently on core features; paid upgrades (sales/marketing tooling and payment processing) are planned as opt-ins, not paywalls. The magic-link client app, the program builder and the full exercise library are live today.