Dev Diary

A weekly record of building INCREMNT: product decisions, Swift and iOS engineering, AI-assisted development, refactors, tooling, failures and the work users never see.

6 min read

When Coach can turn a photo into a workout

INCREMNT is a strength-training app that helps athletes understand their training and decide what to do next. This week’s central change was giving Coach a safer boundary between discussing a workout and carrying out an explicit request to create, revise, save, or start one.

Previous entries

  1. Make the first workout ready to use

    INCREMNT is an iOS strength-training app that turns a goal, schedule, and available equipment into a workout plan. This week I tightened the handoff from that plan to a first workout that fits real life, starts honestly when no load history exists, and can travel across the phone and a Garmin companion without losing ownership.

    6 min read
  2. Show the work before asking for trust

    INCREMNT is an iOS strength-training app that turns what you log into a clearer next workout. This week, onboarding moved from describing that promise to proving it: the path now uses a person’s goal and training need to show credible research, real product behavior, and a plan that can survive an interrupted setup.

    6 min read
  3. When training feedback survives the handoff

    INCREMNT is an iOS strength-training app that helps athletes follow a plan and decide what to lift next. This week’s central work made training feedback durable across two important handoffs: a completed week can become a saved report that Coach can reopen, and effort recorded on Apple Watch is persisted before the phone clears the workout state.

    6 min read
  4. Preserve the work, change the prescription

    INCREMNT is an iOS strength-training app that helps athletes follow a plan and decide what to lift next; this week’s central change was making adaptation reversible, so a lighter return session or a delayed Coach check-in never rewrites work the athlete has already done.

    6 min read
  5. Coach answers you can check

    INCREMNT is a strength-training app that turns logged workouts into a plan you can follow and understand. This week’s work tightened the line between what Coach can prove, what it recommends, and what it is allowed to change.

    6 min read
  6. From Ask Coach answers to reviewable training decisions

    INCREMNT is a strength-training app that turns your training history into a plan you can actually follow. This week, we tightened the boundary between asking Coach a question and changing a workout: answers now move toward evidence-backed, reviewable proposals while the app keeps control of prescriptions, persistence, and approval.

    6 min read
  7. Coach should remember what it can prove

    INCREMNT is an iOS strength-training app that tells you what to lift next; this week its Coach became more useful between questions by carrying conversations forward, showing answers as they arrive, and keeping progress advice tied to evidence the app can actually verify.

    7 min read
  8. The first workout should prove the plan

    INCREMNT is an iOS strength-training app that turns your goals, experience, equipment, and schedule into a workout plan you can follow. This week I made the first workout part of that proof: onboarding now leads into a real, personalised logger with real history, recommendations, and a safe boundary around the sample data.

    6 min read
  9. Proof you can follow

    INCREMNT is an iOS strength-training app that builds a programme, guides each workout, and adapts what comes next; this week I worked on a simple product standard: important promises should come with a proof trail an athlete can inspect.

    6 min read
  10. When intent survives the swap

    INCREMNT is an iOS strength-training app that helps athletes follow a plan and decide what to lift next; this week’s work made that intent hold together when exercises are swapped, sets are interpreted, and a workout moves between phone and Watch.

    6 min read
  11. When the gym changes, the plan can change with it

    INCREMNT is an iOS strength-training app that tells you what to lift next; this week it made planned workouts easier to adapt to the equipment in front of you while tightening the load, coaching and export contracts behind that decision.

    8 min read
  12. Making recommendations easier to trust

    INCREMNT is an iOS strength training app that explains what to lift next; this week brought clearer recommendation reasoning, privacy-safe analytics and tighter production tooling.

    8 min read