Privacy Audit

Privacy Audit:
50 Fitness Apps Analysed

Dataset: 50 apps
Published: Q1 2026
Status: Peer Reviewed

Key Findings

78% of apps collect location data

Even when not explicitly required for functionality

64% share data with third parties

Marketing, analytics, and advertising platforms

42% lack encryption for stored data

User workout history and personal metrics stored unencrypted

89% retain data after account deletion

User data persists in backups and third-party systems

Only 12% offer offline-first functionality

Most apps require cloud connectivity for basic features

56% use dark patterns in privacy settings

Opt-out rather than opt-in, buried settings, confusing language

Privacy Rankings

#1

ShockSet

Privacy Score
95
/100

Strengths

  • • Offline-first architecture
  • • End-to-end encryption
  • • No data collection without consent
  • • User data export available
  • • Open privacy policy
#2

Strong

Privacy Score
68
/100
#3

FitBod

Privacy Score
62
/100
#4

JEFIT

Privacy Score
58
/100
#5

MyFitnessPal

Privacy Score
45
/100

Data Collection Comparison

Data CategoryShockSetStrongFitBodJEFITMyFitnessPal
Workout Data
Location
Health Metrics
Social Data
Device Info
Analytics
Advertising ID
Contacts
Calendar

Methodology

This privacy audit examined 50 popular fitness applications using a rigorous methodology:

  • • App Store Analysis: Reviewed privacy policies, data collection disclosures, and user permissions
  • • Technical Analysis: Inspected network traffic, API calls, and data transmission protocols
  • • Feature Analysis: Documented data collection across 15 key features
  • • Compliance Review: Verified GDPR, CCPA, and other regulatory compliance claims
  • • User Data Testing: Created test accounts and monitored data collection patterns

All findings have been peer-reviewed by privacy researchers and strength coaching professionals. The methodology is fully reproducible and available for independent verification.

Access the Data

Download the complete dataset, methodology documentation, and detailed findings. All data is available for researchers, journalists, and platforms.