GainLens
AI Physique Coach & Tracker
About
See your progress. Not just feel it.
Available on Android & iOS
GainLens uses AI to analyse your weekly physique photos and give
you what the mirror can't - an objective score, body fat estimate,
muscle breakdown across 15 groups, and a personalised coaching
message every single check-in.
WEEKLY CHECK-INS THAT ACTUALLY TELL YOU SOMETHING
Take a front, back, or side photo. GainLens analyses it in seconds
and returns an overall physique score, symmetry rating, conditioning
score, and estimated body fat range. No guessing. No bias. Just data.
YOUR AI COACH IN YOUR POCKET
After every check-in, your AI coach tells you exactly what's working,
what's holding you back, and what to prioritise in the next four weeks.
Specific, actionable, and based on what it can actually see.
TRACK EVERY MUSCLE GROUP
See scores for all 15 muscle groups - chest, lats, delts, arms,
quads, hamstrings, glutes, calves and more. Know which muscles are
lagging before they become a problem.
PROGRESS CHARTS THAT MOTIVATE
Watch your overall score climb and your body fat trend downward over
weeks and months. A timeline of every check-in with photos, scores,
and coaching messages - your transformation, documented.
CREATE SHAREABLE CONTENT
Generate before-and-after cards in one tap. Post your transformation
to Instagram, TikTok, or anywhere else. The progress is yours - show it.
STAY CONSISTENT WITH STREAKS
Weekly check-in reminders, streak tracking, and accountability keep
you coming back. Consistency is the only variable that matters.
PRIVATE BY DEFAULT
Your photos never leave your device. Analysis is done securely and
your photos are stored locally - not on our servers.
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FounderPlaybooks.
What other founders did to grow.
2722 dispatches from hundreds of founders, pulled from the week's best podcasts.
the upper quartile there was there was an uptick of around 5% for annual plans... we see even Tony Robbins app it's going for $99 a month... where I've been seeing this more is around like the fitness space uh education as well health apps
Premium pricing leads in fitness, health, and influencer apps
Upper-quartile annual plan prices rose ~5% YoY (State of Subscription Apps report) and the Tony Robbins app now charges $99/month — proof that premium floors have risen sharply. This trend is strongest in fitness, education, health, and influencer-led apps, and weak in price-sensitive markets like Turkey, India, and southern Europe. The middle-ground is disappearing: apps polarize toward cheap or luxury, and straddling the middle creates positioning risk.
we also are doing smoke testing so basically showing users burner plus and seeing if they're interested in purchasing before they can actually get it and so then we measure... actually purchase and then you give them the womp paywall like... sorry not ready yet but thanks for your interest coming soon
Use smoke tests to validate new features before a single line of production code is written
Before building Burner Plus, Musetti surfaced a real purchase CTA to existing users and tracked click-through as a demand signal — anyone who tapped got a 'coming soon' modal. This costs almost nothing and generates real willingness-to-pay data. It is the fastest way to validate whether a premium tier will actually sell.
There's a play for whatever you're stuck on.
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Comments
1Your mirror can’t measure progress. GainLens uses AI to analyse weekly physique photos, track 15 muscle groups, estimate body fat, and tell you what to focus on next.