LeanSignal
Understand Every Weigh-In
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
See what your measurements actually mean. LeanSignal separates meaningful body-composition trends from normal day-to-day noise—with private, on-device analysis.
Your weight changed. But did your body composition?
LeanSignal helps you understand what your measurements actually mean. Instead of reacting to a single weigh-in, it looks across time and supporting measurements to separate meaningful patterns from normal day-to-day noise.
WHAT LEANSIGNAL HELPS YOU ANSWER
• Is this change likely meaningful, or could it be water and normal variation?
• Are weight and body-composition measurements telling the same story?
• Is your current goal phase moving in the intended direction?
• Is progress continuing, holding steady, or beginning to plateau?
• Which measurement would be most useful next?
UNDERSTAND THE SIGNAL
LeanSignal’s Signal Score explains how strongly your recent data supports a genuine pattern. It considers measurement coverage, consistency, recency, and agreement between supporting signals before using stronger language. Every new check-in receives a clear response—even when there is not yet enough information to determine a reliable trend.
MORE THAN A WEIGHT GRAPH
• Quick check-ins for everyday scale readings
• Full check-ins for tape and skinfold measurements
• Optional read-only Apple Health import through HealthKit
• Plain-language weekly reports
• Weight, waist, body-fat, lean-mass, and caliper trends
• Personal baselines and goal phases
• Cautious forecasts and milestone estimates
• Multi-method body-composition working ranges
• Progress photos and DEXA reference calibration
• PDF summaries, CSV reports, and complete data backup
• Optional Face ID or device-passcode protection
PRIVATE BY DESIGN
LeanSignal requires no account and contains no advertising or third-party analytics. Your measurements and photos remain stored privately on your device. Apple Health access through HealthKit is optional and read-only, and LeanSignal imports only the information you choose to share.
LeanSignal provides informational estimates and trend guidance. It is not a medical device and does not provide medical advice or clinical measurements.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
LeanSignal is now clearer and easier to use.
• The Dashboard leads with what your latest check-in means.
• Weekly context and Signal Score are presented together.
• Reports, History, Settings, onboarding, and Pro screens have cleaner layouts.
• Improved support for larger accessibility text sizes.
• Smoother onboarding and tutorial transitions.
The developer, NovoBuild LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Novobuild LLC
- Size
- 13.5 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- LeanSignal Pro Lifetime $19.99
- Copyright
- © 2026 NovoBuild LLC