# Abbott FreeStyle Libre

9 Hacker News commenters recommended Abbott FreeStyle Libre and 10 criticized it, November 2025 to November 2026. It was recommended in 4 of 13 months.

**Verdict:** Recommended for continuous blood sugar tracking that shows trends over days. Critics mainly point to readings that can be inaccurate, including a recent sensor bug.

## Why people recommend it

- Trends and habits useful despite rough numbers (2 comments): "Probably very inaccurate numbers but the trends could be okish." ([source](https://news.ycombinator.com/item?id=49319989)) "Wearing it for 2-4 weeks is usually enough to learn a lot about your relationship with sugar." ([source](https://news.ycombinator.com/item?id=48876820))

## What people warn about

- Readings can be inaccurate (5 comments): "Freestyles are not reliable to be used purely for managing immediate levels of glucose" ([source](https://news.ycombinator.com/item?id=46390294)) "Probably very inaccurate numbers but the trends could be okish." ([source](https://news.ycombinator.com/item?id=49319989)) "If undetected, incorrect low glucose readings over an extended period may lead to wrong treatment decisions" ([source](https://news.ycombinator.com/item?id=46390134))
- Sensor bug linked to deaths (3 comments): "It's a stretch to go from "associated with 7 deaths" to "killed 7 people". These devices are worn by millions." ([source](https://news.ycombinator.com/item?id=46391373)) "The FDA reports that Freestyle injured over 700 people and killed seven people with this bug." ([source](https://news.ycombinator.com/item?id=46388734)) "On one hand, this is a very, very bad bug." ([source](https://news.ycombinator.com/item?id=46389053))
- Companion app is poor (2 comments): "luckily without their shit app" ([source](https://news.ycombinator.com/item?id=46390315)) "it is quite a disappointing thing software-wise" ([source](https://news.ycombinator.com/item?id=46393143))
- Device stops working, no Health sync (2 comments): "The device was essentially not functioning anymore." ([source](https://news.ycombinator.com/item?id=46393618)) "did not sync to Apple Health" ([source](https://news.ycombinator.com/item?id=50111311))

## Alternatives hackers recommend

- [Abbott continuous glucose monitor](https://hackerapproved.com/p/abbott-glucose-monitors.md): 8 recommend
- [Dexcom G7](https://hackerapproved.com/p/dexcom-g7.md): 5 recommend

## Where to get it

- [See price on Amazon](https://www.amazon.com/s?k=Abbott+FreeStyle+Libre+3+Plus+glucose+sensor&tag=hackerapprove-20) (affiliate link)
- [Official site](https://www.freestyle.abbott/en-us/home.html)

## Cite as

Hacker Approved, "Abbott FreeStyle Libre", https://hackerapproved.com/p/freestyle-libre/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).