The idea
Your future self, on day one
Most fitness apps show you a number trending in the right direction. Apex shows you a person. You enter your goals — a target weight, a body-fat range, the lifts you're chasing — and Apex builds a future-self avatar: a digital twin of who you'll be when you get there.
Every workout, every logged meal, every streak day nudges the avatar closer to that goal physique. The progress bar isn't a bar — it's you, becoming.
Create your avatar*
Start with a photo
Interactive demo · upload a photo to preview your future self
* Concept prototype — the future-self rendering runs as an on-device preview while the generative model is in development.
Onboarding
Tell Apex where you're headed
Set your starting point and your target — weight, body fat, and a timeline — and Apex turns it into a concrete, paced plan, then builds the future-self avatar to match.
Product
Drag to your goal
The heart of Apex is one control. Slide from today toward your goal and watch the avatar fill in, the body composition shift, and every metric move with you — motivation you can actually see.
Future-self avatar · drag the slider to preview your transformation
Goals
Set the targets that shape the avatar
Goals are concrete and measurable — each one feeds the avatar and earns its own progress. Hit them all and the avatar is, finally, just you.
Cut to 14% body fat
64%
Bench 1.25× bodyweight
80%
Run a sub-25 5K
42%
Train 4× / week
Done
Habit
Show up — the streak does the rest
Consistency is the real workout. Apex turns it into a streak that the avatar literally grows on — plus badges for small wins and a nightly sleep check.
Streak
21
Day streak
It's Sunday. Tap today to log a session.
Badges
4/6
Earned
Sleep
7.8h
Last night · 7.1h avg
The app
A day with Apex
Apex lives on the phone. The avatar greets you at open, meals and streaks feed it through the day — and when a day slips, the check-in says so honestly: stated, never shamed.
Tools
Body fat calculator
Not sure of your body fat? Estimate it with the U.S. Navy method, then apply it straight to your goal.
Estimate · circumference-based, then feeds the avatar demo above
Process
Three decisions that shaped Apex
The demos above look inevitable in hindsight — they weren't. These are the calls that defined the product, and the options they had to beat.
Decision 01
A person, not a progress bar
Considered
A weight-trend chart with a percent-complete ring — the standard fitness-app dashboard.
Chose
The future-self avatar as the product's single progress surface. You drag between today and your goal, and every metric follows the person.
Because
Numbers report; a person motivates. Recognizing yourself in the goal is the emotional loop that gets someone to log meal #400 — a chart never is.
Decision 02
Photoreal identity, not a 3D character
Considered
A stylized, game-like avatar — cheaper to build, no uncanny-valley risk, easy to make aspirational.
Chose
Identity-preserving photo transformation: same face, same person, changed physique.
Because
A generic character is someone else's goal — motivation needs recognition. It also creates the honesty risk this study closes on, which felt worth taking with guardrails rather than avoiding.
Decision 03
Staged renders, not live generation
Considered
Generating a fresh avatar at every slider position — the “true” continuous experience.
Chose
Pre-generating three progression stages per photo and crossfading between them as you drag.
Because
Generation costs seconds and cents per frame; the slider has to feel instant. Latency and cost are design materials — staging makes scrubbing free at the moment of highest engagement.
What I'd do next
Earned, not faked
The next design problem is honesty. A future-self avatar is powerful because it's aspirational — and risky for the same reason. The avatar should reflect realistic, healthy timelines, celebrate the process over the number, and never shame a missed day. The pace check in the goal builder above is the first piece of that: set an unsustainable timeline and Apex pushes back with one you can actually earn.
That's the line worth designing carefully: motivating without distorting. An avatar you're proud to become, not one that makes today feel like a failure.