Medtronic Guardian 4
VS.
Freestyle Libre 2
Quick Verdict
“Specs + reference evidence point to Medtronic Guardian 4 as the stronger insulin-safety workflow fit. Freestyle Libre 2 can still be a better match when simpler onboarding matters more than alert depth. Current user-report tone: Medtronic Guardian 4 is mixed user reports, Freestyle Libre 2 is more risk-heavy user reports.”
Key Differences
| Dimension | Medtronic Guardian 4 | Freestyle Libre 2 |
|---|---|---|
| Use type | Prescription | Prescription |
| Insulin-use fit | High | Medium |
| Wear duration (days) | 7 | 14 |
| Warmup (minutes) | Varies / not emphasized | 60 |
| Calibration | none | none |
| Alert depth | full | standard |
| Discretion | Medium | Medium |
| Community signal focus | signal, ecosystem | night alerts |
| Community signal tone | mixed user reports | more risk-heavy user reports |
References
- 1.Medtronic 780G + Guardian 4 calibration guidanceofficial
- 2.Abbott FreeStyle Libre resourcesofficial
- 3.Reddit: Guardian 4 reliability complaintscommunity
- 4.Reddit: Guardian 4 positive in-range outcomescommunity
- 5.Reddit: Libre nighttime false lowscommunity
- 6.Reddit: CGM falling off patterns and fixes (r/diabetes_t2)community
- 7.Reddit: CGM falling off recent discussion (r/type2diabetes)community
Medical Disclaimer
This content is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before making decisions about your diabetes management or CGM device selection.