RePebble Creates An Open Source $99 Voice Recorder Ring You Can Hack

Eric Migicovsky, who basically invented the smartwatch category with the original Pebble, just announced something much simpler: a $99 ring with one button that records voice memos. That’s it. No internet connection required, no cloud storage, no subscription fees, no wake words. Press the button, talk, release. Your note is saved locally—either on the ring’s tiny bit of memory or synced to your phone directly.

What makes the Pebble Index 01 actually interesting isn’t the hardware minimalism (though that’s refreshing). It’s that the whole thing is open source and designed to be hacked. Want long-press to do something different? Go for it. Want your voice memos piped into your task manager? Do it. The platform is yours to modify.

If you don’t know Migicovsky’s background: he kickstarted the original Pebble Watch in what became one of the platform’s most successful campaigns (I backed it), proving smartwatches could be useful. Pebble eventually got passed by bigger players, sold to Fitbit, then absorbed into Google.

A few years back, Eric moved into a different space, creating Beeper, the incredibly cool and useful universal messaging app, that pulls together basically all your messaging tools into a single unified interface. As I discussed with him on the Techdirt podcast last year, it was a cool example of how protocols let people build things that were more powerful. Last year, Beeper was sold to Automattic.

Somewhere in the midst of all this, Google agreed to open source all the original Pebble software (which it wasn’t using), and Eric decided to get back to his original baby, creating RePebble, which would create a new generation of Pebble watches which recently shipped. This time, built on open source, totally hackable software, and even the ability of others to build devices on the Pebble platform.

I spoke to Eric last week about the Index 01. The design philosophy is clear and refreshing: keep it simple enough that it works perfectly every time. As someone who constantly sends myself notes—thoughts while walking, reminders mid-conversation, ideas that’ll vanish if I don’t capture them immediately—this is a tool I’m really looking forward to. But the real story isn’t the ring itself. It’s what you can do with it.

The AI processing is local—a small on-device model that does speech-to-text without sending anything to the cloud. But because the whole platform is open source, you’re not stuck with that default behavior. You can reprogram the button. You can route the output wherever you want. I’m already thinking about piping voice memos directly into my vibe coded task management tool, turning quick verbal notes into actionable tasks without touching a screen.

This is the kind of experimentation that closed hardware makes impossible. When you buy a typical consumer device, you’re renting someone else’s vision of how you should use it (and often paying a subscription fee for the privilege). When the hardware and software are open, you’re buying raw capability that you can shape however you need.

The device also has battery life that should last quite a while. Eric says two years, but that really depends on how much you use it. As I understand it, the battery can effectively record between 12 and 15 hours before the battery dies. If you’re just doing short 5 second notes to yourself, that can be quite some time.

The somewhat controversial decision here, though is that the ring is not rechargeable. From what Eric told me, that allowed them to simplify things and also use a longer-lasting hearing aid battery in the ring. Putting in a rechargeable battery and then adding a charging port and cables and such would have made the product more expensive, and less practical.

It’s a design choice that I can understand, but also one that some may bristle at, given that the ring will only last about two years if used regularly (and less if used a lot) and then become e-junk. For what it’s worth, the plan is to allow you to send back your used up ring to RePebble to recycle when it reaches end of life (the app will warn you with plenty of time ahead). In theory, you would send it back when you buy a new one (assuming you found it super handy over the two years you were using it).

For years, I’ve argued for protocols over platforms in software—the idea that decentralized, open systems give users more control than walled gardens, even when the walled gardens are more convenient.

Consumer hardware has often gone in the opposite direction. We’ve too frequently traded repairability and control for sleekness and integration. Your smartphone is a sealed black box. Your smart home devices stop working when the company shuts down its servers. Even something as simple as a fitness tracker often requires a proprietary app and cloud account just to see your own data.

The Index 01 won’t reverse that trend by itself—it’s a $99 ring, not a revolution. But it’s a reminder that another path is possible. Open hardware, like open protocols, creates options. The Raspberry Pi proved there’s demand for hackable hardware in hobbyist computing. Framework has shown that’s true for laptops. Migicovsky is betting there’s demand for it in everyday consumer devices too.

I put in a pre-order. Not just because I need a better way to capture fleeting thoughts, but because this represents the kind of product I want to see more of: something you control, something you can modify, something that doesn’t stop working when the company loses interest. For all the complaints about big tech dominance and ecosystem lock-in, the solution isn’t better monopolies. It’s tools that put control back in users’ hands—whether that’s through open protocols in software or open platforms in hardware.

This is one example of what that looks like.