quantified-self
The premium Open Source alternative to DC Rainmaker Analyzer
🎯 Best for:Users testing the accuracy of new fitness wearables or sensors.
What is quantified-self?
Replaces manual spreadsheet comparisons for activity trackers by providing a tool to overlay multiple FIT/GPX files. Designed to analyze discrepancies in GPS accuracy, heart rate sensors, and power meters.
Tech Stack
TypeScriptFitness & Wellness
Why quantified-self?
- • High-precision comparisons
- • Supports multiple formats
- • No data upload required
Limitations
- • Niche use case
- • Technical UI
- • Limited to file comparison
2/28/2026
Last Update
28
Forks
7
Issues
AGPL-3.0
License
Financial Leak Detected
Stop the "SaaS Tax"
Your team could be burning cash. Switching to quantified-self instantly boosts your runway.
Competitor Cost
-$1,440
/ year (est. based on DC Rainmaker Analyzer)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%