Girths & caliper
Girths & caliper is a body composition tracking app for fitness professionals and athletes, structured around skinfold formulas and girth measurements on iOS.
The App DNA
What makes this app unique?
The app removes the need for manual calculation of body fat percentages by automating validated clinical formulas, serving users who prioritize precision over general weight tracking.
For Fitness enthusiasts, bodybuilders, and personal trainers requiring precise, science-backed body composition tracking.
What does it look like?
Key features
Calculation of body fat percentage using Jackson-Pollock, Durnin-Womersley, and Sloan protocols.
Personalized feedback on measurement deltas powered by Anthropic Claude.
Logging of 16 circumference sites to track asymmetries.
How much does it cost?
Subscription model gates advanced AI insights and full feature set behind the Standard tier.
Velocity
Maintenance developmentnew contentmonetizationShow more...
With only one release in the observed window and 106 days since the last update, the app operates on a maintenance cadence. Development is currently focused on integrating AI-driven insights and premium coaching tools. There is no evidence of a recurring live-ops schedule or frequent feature iteration. Future updates appear infrequent, consistent with a long-term maintenance cycle.
Who built it?
User Sentiment
What do users think recently?
Recent user voice shows an upset sentiment.
How are ratings & reviews evolving?
What users say, by theme
- Users report the app contains numerous spelling errors that undermine trust in the health data tracking
1 of 1 recent reviews analyzed · limited sample
Read the full review analysisUnlock 1 more frustration theme, each backed by review evidence.
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Competitive landscape for Girths & caliper
How's the Health & Fitness market?
Girths & caliper occupies a niche in the Health & Fitness category, relying on clinical protocols to differentiate from mass-market trackers. The single-rating count reflects a lack of broad market penetration, signaling a need for improved user trust to drive adoption.
Read the market outlookThe rivals identified
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Key takeaways for Girths & caliper
Where is it heading?
Users report: The professional fitness tracking market is increasingly sensitive to data privacy and professional presentation. Girths & caliper remains exposed until it addresses the trust issues identified by users, as even advanced AI features cannot compensate for a lack of basic quality assurance.
- The 107-day gap since the last update suggests a maintenance-mode cadence, which limits the app's ability to respond to user trust complaints.
- The integration of AI coaching provides a clear value-add for premium subscribers, provided the foundational trust issues are resolved.
The SWOT
- Clinical-grade formulas (Jackson-Pollock, Durnin-Womersley) provide a defensible barrier.
- Localized marketing to personal trainers could leverage CSV export for client management.
Next best moves
Audit UI for spelling errors because users report typos undermine health data trust → improve retention
+ 1 more prioritized moveThe counter-intuitive read
The app's reliance on manual skinfold measurements is a feature, not a bug…
Read the full takeBottom line
Girths & caliper must address foundational trust issues, as spelling errors and privacy concerns currently outweigh the value of its clinical formulas. Resolving these presentation flaws would unlock the retention potential of its professional-grade tracking features.
Unlock 2 critical frictions, 1 market threat, 1 more prioritized move and the analyst’s take.
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- [1] App Store
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