- Background noise
- Quiet and TV
- Music Streaming
Fio is Lucid's invisible-style product that offers rechargeable batteries and allows customization using the Lucid app. The Lucid Fio is a lot like the Eargo hearing aid (although slightly larger) at around 40% less price. Like Eargo (and most invisible hearing aids), Fio does not allow Bluetooth streaming. One notable feature in Fio is that in order to adjust programs or the volume, you will need to place the devices back in their recharge case.
Pros
Rechargeable and nearly invisible
Easy to handle and comfortable in the ear
Affordable compared to other invisible options
Cons
Must place the product back in the case to recharge
Slightly larger than competing options from Eargo
- Lucid Fio hearing aids are sold over the counter and are appropriate for those with mild-moderate hearing loss
- If you have more significant hearing loss it is recommended that you access professional care through Telehealth or local care
- Available for purchase online or at retail stores like Walgreens and Best Buy
- Does not require a prescription from a doctor
- Customize your hearing aids with an onboard hearing test and app-controls
- Fio is manufactured by Lucid Hearing and has some built-in background noise reduction algorithms
- The Lucid app gives you some control over background noise management
- Fio sits inside of the ear and can be less comfortable (also more affordable) than custom-molded in-the-ear options
- Sit inside the ear
- Only available in one completely-in-canal size (nearly invisible in many ears)
- Only available in silver
- Lucid Fio hearing aids are rechargeable
- 16 hours of battery life on a single charge
- Each pair of hearing aids comes with a small and portable recharge case
- Lucid Fio does not come with Bluetooth streaming
- Lucid Fio is small but comes with rechargeable batteries which prevents difficult battery changes
- Lucid Fio has a pull-tab on each device which makes removal easier
- Lucid Fio hearing aids are not advertised as water resistant. Keep these devices away from water when possible.
- Fio has access to the Lucid Hearing app which includes an onboard hearing test and manual controls for bass and treble
- Fio must be in the recharge case during app adjustments (no adjusting while they are in your ear)
Lucid Fio is available over-the-counter, meaning you can purchase the hearing aids online or at a local retail store (some Walmart stores and Sam's Club).
Once you receive your new hearing aids, you'll use the Lucid app to customize the amplification and frequency to match your hearing loss. Unlike some other OTC devices, Lucid does not administer a hearing test through their app; instead, they give you access to a control panel and an interactive chart called Lucid Shape. You will use those tools to customize the hearing aids to your comfort.
If you have questions or issues along the way, you can call the Lucid support team for live troubleshooting and advice.
Two Fio hearing aids and a recharging case
Charging cord
1-year warranty
Return policy varies by retailer but is at least 60 days from purchase.
Fio uses multiple microphones to analyze the soundscape around you and converts that signal into amplified sound played through a tiny speaker placed directly in your ear. Fio isn't as high-tech as other hearing aids on the market but prioritizes clear sound in the smallest package possible.
Notable Lucid Fio features:
âī¸ Nearly invisible unless someone looks directly in your ear
âī¸ Self-fit using the Lucid app
âī¸ Rechargeable with 16 hours of battery life
âī¸ Available in aluminum
â No Bluetooth streaming is available
What people are saying:
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The breakdown
If you are looking for an invisible hearing aid that doesn't require a doctor's visit or a custom mold, Fio should be on your shortlist.
Fio is rechargeable, easy to use, and delivers impressively clear sound. Compared to Eargo, the device is a bit larger but also 40% less expensive.



The tech inside
Fio packs a lot of technology into a small space. Our team found that the sound quality is reasonably clear, and the app customizations are impressively flexible.
The rechargeable batteries last 16 hours (long enough for most days' wear).
The drawbacks? Fio doesn't allow streaming and requires users to place the device back in the case to adjust the volume.
Getting up close
You'll have to look closely to spot Fio in the ear. The device is impressively tiny and sits in the way of glasses and masks.
Fio is only available in metallic silver color at this time. Each device has a pull tab on the back to allow for easy removal.

Overall notes:
The field gets narrow pretty quickly if you are looking for an in-the-ear and OTC device. Most people compare Fio to its closest competitor Eargo. Fio is more affordable and more customizable. It's also slightly larger.