CalibrationOS vs GageList

GageList is a web-based calibration tracking tool that offers a free tier for small labs. While it covers basic instrument tracking and calibration scheduling, CalibrationOS provides deeper metrology capabilities including uncertainty budgets, Gage R&R, and OOT investigation workflows — all within its free tier.

Feature	CalibrationOS	GageList
Starting Price	Free tier (unlimited instruments), paid plans from $49/mo	Free tier (limited instruments), paid from ~$39/mo
Free Tier	Unlimited instruments, full core features	Limited to ~25 instruments, basic features
Cloud / Web Access	100% cloud-native SaaS	Web-based SaaS
Mobile App	Progressive web app for all devices	Mobile-responsive web interface
REST API	Full REST API with webhook support	Limited API in paid plans
Audit Trail	Immutable audit trail with e-signatures	Basic change history
Measurement Uncertainty	Full uncertainty budget calculator per GUM/ISO 17025	Not available
MSA / Gage R&R	Integrated Gage R&R studies	Not available
OOT Investigations	Guided investigation workflow with impact analysis	Basic OOT flagging only
Compliance Standards	ISO 17025, ISO 9001, 21 CFR Part 11, AS9100, IATF 16949	ISO 9001 basic support

Why Choose CalibrationOS

Unlimited instruments on the free tier — no artificial caps
Full measurement uncertainty budget tools not available in GageList at any tier
Gage R&R / MSA studies integrated directly into the calibration workflow
Comprehensive compliance support (ISO 17025, FDA, aerospace, automotive)
Enterprise-grade audit trail with electronic signatures on all plans

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