GainFrame vs Specimen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GainFrame
Visualize your fitness progress with side-by-side photo comparisons. Easily track muscle growth and body composition changes over time. Create multiple collections to document gains in specific muscle groups.
- Side-by-side progress photo comparisons
- Background removal from photos
- Fine-tuning photo alignment
- Visual timeline of fitness journey
- Track muscle growth and body composition
- Create multiple progress collections
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Progress is hard to see in the mirror. It's even harder to see in photos taken at different distances, angles and lighting. GainFrame fixes that. GainFrame finds your body's landmarks in every photo and lines them up automatically. Swipe between before and after and you see what actually changed: your shape, not the camera. PERFECTLY ALIGNED COMPARISONS • Auto-alignment matches photos by shoulders, hips and joints • Wipe between before and after, or overlay them at any opacity • Fine-tune any photo by hand with drag, pinch and rotate • Remove busy backgrounds for clean, studio-style comparisons GUIDED CAPTURE • A see-through overlay of your last photo shows you exactly where to stand • Live pose guidance tells you to step closer, turn or hold still • Voice guidance and haptics, so you can follow along from across the room • Hands-free timer and auto-capture when you're in position CHECK IN, EVERY WEEK • One guided session captures front, side and back, each lined up with last time • Weekly reminders on the day and time you choose • Organize photos into collections for every pose and angle TRACK THE NUMBERS TOO • Log weight, waist and body fat with each photo • Import measurements from Apple Health • See your trend on a chart, and the change between any two check-ins SHARE YOUR TRANSFORMATION • Export side-by-side images, wipe videos and GIFs • Turn a whole collection into a Transformation Reel: every photo, aligned and played in order PRIVATE BY DESIGN • Your photos and measurements stay on your iPhone and are never uploaded • Lock GainFrame with Face ID or your passcode • Included in your iPhone's iCloud Backup GAINFRAME PRO Free includes one collection with up to 5 photos, 3 auto-aligned photos and 3 background removals. Pro unlocks: • Unlimited auto-alignment and background removal • Unlimited photos and collections • Transformation Reels • Watermark-free exports Pro is available as a monthly or annual subscription. The annual plan includes a free trial for new subscribers. Payment is charged to your Apple Account when you confirm your purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in Settings > Apple Account > Subscriptions. Find our EULA and Privacy Policy here: https://docs.google.com/document/d/170uLwpH5-8HxldSGugRD7-4nooGyiOrLHuaoKKnBZZE/edit?usp=sharing
Specimen
This app uses on-device AI and computer vision to analyze your physique from progress photos. It provides objective scores for muscle groups, estimates body fat, and offers personalized feedback to guide your training. Features include multi-angle scans and trend tracking.
- AI physique scoring for 6 muscle groups
- Archetype-calibrated verdicts
- Body fat % and FFMI estimates
- 3-angle scan mode with auto-capture
- Per-muscle coaching
- Score trend charts and personal bests
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your mirror lies. your training partners lie. you lie to yourself. Specimen doesn't. take a progress photo. Specimen runs on-device computer vision — 33 body landmarks, photo intelligence, muscle geometry — then sends a downscaled copy to AI for a brutally honest physique verdict. six muscle groups scored. weakest link named. feedback calibrated to your exact target physique. no encouragement. no filters. just data and direction. WHAT YOU GET • AI physique scoring across 6 muscle groups • Weakest-link callout — what needs work first • Body fat % estimate + FFMI in every result • Archetype-calibrated verdicts (classic, athletic, shredded, performance, mass) • Separate scoring rubrics for female athletes • Quick scan or full 3-angle (front, side, rear) with voice-guided capture • On-device skeleton overlay + photo intelligence (light, distance, shadows) • Score trends, personal bests, check-in calendar • Share cards with your actual scores PRICING (US) • Two free check-ins — baseline + one follow-up. No payment to start. • Monthly $9.99 — no trial • Annual $59.99 — 7-day free trial • Lifetime $149.99 — available in subscription management Pro unlocks unlimited check-ins after your two free scans. PHOTOS & PRIVACY Full-resolution check-in photos stay on your device. Only a downscaled copy is sent to our AI provider for analysis (retained ~30 days on their side, not used to train models). Delete your account anytime in Settings to wipe your Specimen data. Privacy: https://www.specimen-ai.com/privacy built by an engineer who lifts. for lifters who think like engineers. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Specimen at 5.0 against GainFrame's 3.7. GainFrame's advantage is ads (none vs shown) and ratings volume (3 vs 1). On price, update cadence, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. GainFrame sells 4 in-app purchases, starting at $0.99 per month and Specimen sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
Specimen holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
GainFrame ships an update weekly, Specimen every 9 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | GainFrame | Specimen |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) | 5.0 (1 ratings) — better |
| Number of ratings | 3 — better | 1 |
| Update frequency | Weekly — better | Every 9 days |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 26.0 — better | 26.2 |
| Further details — not scored | ||
| Size | 13 MB | 113 MB |
| Age rating | 4+ | 17+ |
| Developer | EVAN HUNTER ALDRICH | Matthew Fierro |
Customer experience
GainFrame
Specimen
In-app purchases
GainFrame
- GainFrame Pro - Monthly$0.991 Month
- GainFrame Pro - Annual7 Days trial$6.991 Year
- GaineFrame Pro Monthly$0.99
- Gainframe Pro Annual$5.99
Specimen
- Specimen Pro$9.991 Month
- Specimen Pro Annual7 Days trial$59.991 Year
- Specimen Lifetime$149.00








