Useful fitness answers, without the noise.
Evidence-minded guides for people who care more about visible progress than another number on the scale.
Reading about progress is useful. Seeing yours is better.
Turn one gym photo into body-fat, FFMI, and muscle-group trends, then keep the signal going with consistent check-ins.
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Latest articles
Practical guidance on body composition, progress photos, training, and the work behind GainFrame.
Showing 181–210 of 286 posts
5 Best Apps to Track Muscle Loss on GLP-1s (Ozempic, Zepbound)
GLP-1 weight loss is fast — and some of what's lost is muscle. The scale can't tell you how much. Here are the five apps that can, ranked by which part of the problem each one catches.
Best Renpho Alternatives in 2026: 6 Options That Fix BIA's Problems
Renpho made body composition cheap, but foot-to-foot BIA readings swing with hydration and the body fat number is the least reliable thing it measures. Here are six alternatives ranked by what each actually fixes.
Body Recomposition Before and After: What 3, 6, and 12 Months Really Looks Like
Social media recomps compress a year into two photos and pick the most flattering versions of both. Here's the stage-by-stage reality - what actually changes at 3, 6, and 12 months, shown with standardized renders instead of lighting tricks.
Dad Bod Body Fat Percentage: What It Is (and What It Looks Like)
It's a cultural label, not a diagnosis — but it maps to a real body fat range. Here's what the dad bod looks like under standardized conditions, why it happens to good people, and the honest 12-week path to the fit-dad version.
FFMI Percentiles: How Muscular Are You Compared to Other Men?
Your bench says how strong you are on one lift. FFMI says how much muscle you carry for your height — and unlike gym numbers, it has recognizable landmarks. Here's the distribution, from untrained average to the commonly cited natural ceiling.
The Groom's 12-Week Wedding Shred: A Realistic Plan
The wedding-fitness industry has a thousand plans for brides and a shrug for you. Here's the groom's version: twelve weeks, worked backward from the date, ending in maintenance instead of a crash.
Hevy vs Strong (2026): Which Workout Tracker Should You Use?
Hevy and Strong are the two default answers to 'what should I log my lifts in?' Both are excellent. The differences, free tier, social feed, platform polish, decide it, and they're real.
I Paid $49 to Outsource My Promo Video. I Should Have Done It Months Ago.
A motion designer cold-DMed me on Reddit, quoted $79, took $49, and delivered a first cut in about nine hours that embarrassed the screen recording on my landing page.
Ray Fitness App Review (2026): The Voice AI Trainer, Tested
Ray puts a voice in your ear that coaches your session in real time — no staring at your phone between sets. Here's an honest review: what it does well, where it's thin, and who should use it.
Should I Bulk or Cut? A 2-Minute Self-Assessment
You've been circling this decision for weeks. Six questions, count your A's and B's, and you'll have an answer in two minutes — plus the honest caveats about when the quick answer isn't enough.
Spren vs GainFrame (2026): Quick Scan or Photo Timeline?
Spren turns your phone camera into a quick body-composition scanner. GainFrame turns your photos into a scored timeline. Both estimate from images — they just answer different questions.
My Trial Conversion Was 21%. Five Weeks Later It's 44%.
The worst metric in my business was trial→paid conversion: 21% against a 40% industry median. Five weeks and $0 in ads later the last four cohorts blended 44%. What moved it: Pro features back behind the paywall, a new paywall test, and previews of the best features in onboarding.
TRT and Body Composition: Tracking What Actually Changes
Forum before-and-afters promise a transformation. Research describes something slower and smaller. Here's how to track what TRT is actually doing to your body composition — and keep your clinician in the loop.
What Would I Look Like With Less Body Fat? (Visualize It)
It's the question everyone types into their phone at midnight. Here it is answered three ways: standardized renders of the same man dropping 10 points, a free interactive visualizer, and an AI projection of your own body.
Why Your Abs Show in Some Lighting and Not Others
Shredded in the gym mirror, smooth in the bathroom twenty minutes later. Your body fat didn't change on the drive home — the direction of the light did. Here's the physics, and how to stop letting it lie to you.
Why Do I Look Smaller in Photos Than in the Mirror?
You're not imagining it — the gym mirror and your camera roll genuinely disagree, and the reasons are optics, not ego. Here's what the lens, the distance, and the lighting are each doing to you, and how to turn the camera into the more honest instrument.
Why Your Weight Goes Up When You Start Lifting (It's Not Fat)
You started training to look better and the scale went up. That's not failure — it's glycogen, water, and muscle repair doing exactly what they're supposed to do. Here's the timeline, and the one honest check for when it really is fat.
An AI Idea Validator Scored My Live App 66/100
It stamped 'nice to have' on the problem I spent a year building for, and got three things right that cost me $5,674 and four months to learn the hard way.
Paid Ads Didn't Work, So I'm Trying Weirder Stuff: 3 Marketing Experiments
A $150 cash-drop sponsorship that flopped in 48 hours, a 30-day challenge that puts me on camera, and a $450 transformation contest that just went live.
In-App Surveys Got 189 Responses. My Cancel Emails Got Zero.
I've now tried four different ways to get GainFrame users to talk to me. Here are the numbers on all four, including the two that flopped.
How I Grew My App's Organic Traffic 15x in 90 Days
Real Search Console and Analytics numbers on going from 7 to ~100 organic clicks a day with zero paid spend — what worked, what didn't, and the channel I couldn't buy.
Best ZOZOFIT Alternatives in 2026: 6 Options Ranked
ZOZOFIT went suit-free and cheap, but it's still a scan ritual on a subscription. Here are the six best alternatives, from free 3D scanning to AI photo analysis, ranked by what each actually does better.
MeThreeSixty vs GainFrame (2026): 3D Avatar or AI Photos?
MeThreeSixty turns two poses into a measured 3D avatar. GainFrame turns your actual photos into scores. Both are good — at different jobs. Here's how to pick.
Recomp AI vs GainFrame (2026): Which AI Body Tracker Fits?
Recomp AI and GainFrame are both AI-first apps aimed at the same person: someone losing fat and building muscle at once. One is built around the scan, the other around the timeline. Here's what that difference means.
Best InBody Alternatives (2026): Scales, DEXA & AI Apps Ranked
InBody machines live at the gym and the home version isn't cheap. Here are the best at-home alternatives - BIA scales, DEXA, and AI photo apps - ranked by what each is actually good for.
FitnessAI BodyScan vs GainFrame (2026): Honest Comparison
FitnessAI BodyScan and GainFrame both estimate body fat from your phone. One is a 3D scan module inside a workout app; the other is built body-composition-first. Here's what actually differs.
Progress App vs GainFrame (2026): Which Tracker Fits Your Goal?
Progress is a proven weight-loss tracker built on manual measurements and photos. GainFrame is AI body composition built for lifters. They aim at different goals — here's how to pick.
I Spent $5,674 on App Ads. Here's Why I Stopped.
Real numbers on $5,674 of paid ad spend, why the unit economics never worked, and how going back to organic TikTok and SEO grew MRR from stuck to $787.
How to Calculate Body Fat From a Photo Using AI (2026 Guide)
Frustrated by smart scales changing your body fat percentage based on how much water you drank? Measuring body fat from a photo using AI is the most reliable way to track your true physique progression, here is how it works, how accurate it is, and how to do it right.
Best Body Recomposition Apps in 2026: 6 Tools Tested & Ranked
No single app does body recomposition end to end. The trick is knowing which job each one is actually good at: measurement, nutrition, or training.
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