0-to-1 AI Product · Built with Lovable

Repify — AI-Powered Fitness Companion

A gentle, adaptive AI gym companion for beginners — built to flex a 4-week plan around real life (energy, cycle, travel, festivals) instead of demanding perfection, and to replace gym-floor intimidation with an always-available coach.

Role
Solo builder — problem to working prototype
Method
Problem discovery, adaptive UX design, prompt engineering
Scope
Beginner fitness, AI coaching companion
The problem

Most fitness apps assume you already have the habit

Beginners don't usually quit the gym because they lack a plan — they quit because life doesn't cooperate with a rigid one, and because the gym floor itself is intimidating enough to skip on a bad day. I wanted to test whether an AI companion that flexes around a person's actual week, instead of pushing a fixed program at them, would change that.

Solution

Repify: plans that bend to your week, not the other way around

Before

Fixed multi-week programs that assume consistent energy every day, with no adjustment for cycle, travel or festivals.

Missing a session treats you as "off track" — the app has no concept of a gentler day.

After

Repify rebuilds each week around what's actually true today — energy dips, travel, cycle, festivals — and the plan flexes without guilt.

Progress is framed as consistency over perfection, with encouragement instead of streak-shaming.

What it had to get right

Four design bets, each aimed at a specific reason beginners quit

ADAPTIVE PLANNING

4-week plans that flex

Repify adjusts each week's plan around energy, menstrual cycle, travel and festivals — instead of expecting a person to bend to a static program.

GYM-FLOOR READY

Confidence on the floor, not just in the app

Guidance is written for someone who's never stepped on a gym floor before — plain language, no jargon — so the app walks you through doing the workout, not just planning it.

VACATION-READY

Travel and festivals don't reset progress

Instead of pausing or breaking a streak, the plan reshapes itself around travel days and festival weeks so a disrupted week never feels like a failed one.

AI COMPANION

Sprout: an encouraging voice, not a scoreboard

A friendly in-app coach, Sprout, replaces streak-shaming with celebration — the tone stays deliberately gentle and non-judgmental through onboarding and every check-in.

Prototype

A working app, not just a flow diagram

Repify is built and live — onboarding, adaptive plan generation and the Sprout coaching companion all work end to end in the prototype below.

Live prototype — Repify Open full screen ↗
Open interactive prototype ↗
Process

Discovery, flow and prompt design — end to end, solo

Discovery
Problem discovery — started from why beginners drop off in week one or two, not from a feature wishlist.
Flow
Adaptive UX design — designed the onboarding and check-in flow so the plan visibly reshapes around real-life inputs instead of just logging them.
Voice
Prompt & tone design — wrote Sprout's coaching voice to stay encouraging and jargon-free under every plan-adjustment scenario.
Build
Prototype — shipped a working, clickable product on Lovable rather than leaving the concept as a deck.