Apps Like GainFrame: Honest Alternatives (From the Founder)

I built GainFrame. Here's who else is good, and when they're a better fit than mine.

That sentence is the whole premise of this page. People searching for alternatives to my app are usually searching for a reason — it's iOS only, or it doesn't do the thing they came for, or they want a second opinion before committing. Sending them to a page that says "actually, stay" would be a waste of their afternoon and mine.

So this is the list I'd give a friend. Every entry includes the specific case where that app is the correct answer over mine, and the last section is the narrow band where I think mine wins. Disclosure runs through the whole page: I make one of the products being compared.

When is another app the better call?

Five situations, mapped to the app I'd point you toward:

1. MeThreeSixty — if you're on Android, or you need real measurements

Platform: iOS & Android · Price: Free scanning; Premium around $5/mo

This is the alternative I recommend most often, for the least flattering reason: GainFrame doesn't run on Android and there's no version planned. MeThreeSixty does, natively, and it's free to scan.

It's also the answer when you need circumference numbers. Two poses produce a 3D avatar with 14+ estimated measurements — waist, hips, chest, thigh — processed on-device by a company, Size Stream, that has built professional scanning hardware since 2012. My app estimates none of that.

The trade-offs are real on their side too: the free tier keeps only your five most recent scans, and the avatar is a smoothed mesh that captures shape without surface detail. The full head-to-head is in MeThreeSixty vs GainFrame, and the wider Android picture is in our AI body fat apps for Android guide.

Pick it over mine if: you're on Android, or a coach wants numbers in inches.

2. ZOZOFIT — the other measurement-first option

Platform: iOS & Android · Price: Free plan; Premium has been offered around $3.99/mo

ZOZOFIT scans suit-free and produces a 3D body model with measurement tracking over time, on both platforms. It occupies the same lane as MeThreeSixty, and which one you prefer usually comes down to the scanning flow and the app itself rather than any accuracy argument I could make from the outside.

Pricing has shifted more than once, so check the current listing before deciding. We cover both against the wider field in our body scanning and measurement apps roundup.

Pick it over mine if: you want measurement tracking and prefer its scanning experience to MeThreeSixty's.

3. Spren — if the photo habit is never going to happen

Platform: iOS · Price: Free to download, subscription

Here's the honest failure mode of my own product: it's built around a repeated photo, and plenty of people are never going to take one every week. If that's you, GainFrame's whole design falls apart, and Spren is built for exactly the opposite user.

Point the camera, get a body fat percentage and BMI, done. Around 1,500 App Store ratings at roughly 4.7 say the flow works for people who want a periodic reading with no ceremony attached. Its DEXA-comparable claims are vendor-published rather than independently validated, which is worth knowing, and the app is a readout rather than a record.

We put them side by side in Spren vs GainFrame, and there's more detail in our Spren review.

Pick it over mine if: you want a number every few months and no photo timeline.

4. Recomp AI — if you think in scans instead of check-ins

Platform: iOS · Price: Free to download, subscription tiers

Recomp AI, from ISO Labs, is aimed at the same person I am — someone whose scale barely moves because they're recomping, and who needs a different feedback loop. It gets there through the scan: a 3D model with body fat, lean mass, and regional circumference estimates, with side-by-side model comparisons between sessions.

The regional circumference output is something I genuinely don't have. It's a newer app with a smaller review base than the established scanners, and when I last tested it the individual scan was stronger than the tracking layer around it. Full comparison in Recomp AI vs GainFrame.

Pick it over mine if: you want per-region fat and lean change with circumferences, in a scan-session workflow.

5. LeanLens — if you want a free check with nothing installed

Platform: any browser · Price: Free tier

LeanLens deserves credit that competitors usually don't hand out. Open a tab, upload one to four photos, get a body fat estimate plus notes on muscle balance and symmetry. No account, no install, free tier. It also describes its own output as directional rather than medical, which is the correct framing for this entire category, mine included.

If your question is "roughly where am I right now," that's the fastest honest answer available and it costs nothing. Our LeanLens alternatives roundup covers the field around it.

Pick it over mine if: you want one estimate today and no relationship with an app.

Where does GainFrame actually win?

A narrower band than my marketing would suggest, and it's this: you take progress photos, you want each one scored, and you want the scores to be comparable months apart.

GainFrame turns every photo into a scored check-in — estimated body fat percentage, BMI, FFMI, a 1–100 physique score, and individual ratings across 12 muscle groups. The per-muscle layer is the piece none of the alternatives above ship, and it's the piece that answers "which body part is lagging" rather than "what am I overall."

The 12-muscle layer, with before-and-after coloring — the feature that has no equivalent in the scan apps.

The second differentiator is where the history comes from. Point it at your camera roll and on-device AI finds old gym photos, sorts them by pose, and backdates them into a scored timeline, so month one already has a year of context in it instead of a single data point.

Two check-ins, same scoring system, deltas stated — the payoff of keeping a timeline instead of collecting readings.

A single check-in: the score plus the four components that produced it.

The limits, stated as plainly as the wins: iOS only, no circumference estimates, no 3D avatar, and every number is an estimate inferred from an image rather than a measurement. The free tier stops at 25 analyzed photos, which is roughly six months of weekly check-ins. Photos are analyzed by AI and never stored on a server, and no account is required.

Should you run two of these at once?

Sometimes, and the test is whether they use different inputs.

GainFrame plus MeThreeSixty barely overlaps — one scores photos, the other measures circumferences, both have free tiers, and a monthly scan alongside weekly photos covers most of what a DEXA visit would tell you in between. That pairing I'd actively recommend.

GainFrame plus Spren, or plus a web photo analyzer, adds much less. Both estimate the same thing from the same class of input, so the second one mostly gives you a second opinion on body fat. Useful once for calibration, redundant as a habit.

Frequently asked questions

What are the best alternatives to GainFrame?

MeThreeSixty is the strongest all-round alternative — free, on iOS and Android, with 14+ circumference estimates. ZOZOFIT covers similar ground with suit-free 3D scanning. Spren gives a fast camera reading without a photo habit. Recomp AI frames everything around recomposition scans. LeanLens is a free browser check with nothing to install.

Is there a GainFrame for Android?

No, and there is no Android version planned. GainFrame is iOS only. For a native Android app, MeThreeSixty and ZOZOFIT both scan on Android and keep a measurement history. GainFrame's free web tools work in any Android browser for a one-off body fat or physique estimate, though they keep no timeline.

What does GainFrame not do?

It does not produce circumference measurements, build a 3D avatar, run on Android, or measure anything clinically — every number is an estimate inferred from a photo. It also does not log workouts itself, though it pulls volume from Hevy. If tape-style numbers or an Android app are the requirement, another tool on this page fits better.

Is GainFrame worth paying for?

The free tier analyzes 25 photos lifetime, which is roughly six months of weekly check-ins, so you can answer that question before spending anything. Pro at $5.99 a month or $39.99 a year removes the cap and keeps the timeline growing. If you check in monthly rather than weekly, the free tier may last you a year.

Can I use GainFrame alongside another body app?

Yes, and some pairings are genuinely complementary. GainFrame plus MeThreeSixty gives you scored photos and tape-style measurements with almost no overlap, and both have free tiers. Pairing it with Spren or a web photo analyzer adds much less, since those estimate the same thing from the same kind of input.