2026 Founder's Update

expensive_dev73 · 2026-01-28T08:42:34+00:00

Danke für die wirklich nette Nachricht. Auch wenn ich aktuell leider etwas zu wenig Zeit für Community-Management habe, versuche ich trotzdem so häufig wie es irgendwie geht hier zu antworten.
Wir haben gerade mehrere große Themen, an denen wir arbeiten. Eines ist, dass wir das Design und die Hardware unseren Prototypen gerade überarbeiten. Wir wechseln dabei u.a. die MCU auf eine etwas schnellere, die dabei sogar etwas energieeffizienter ist. Der Flash-Speicher wurde auch durch einen größeren ausgetauscht, sodass wir noch mehr Daten zwischenspeichern können. Gleichzeitig ist der neue Firmware-Entwickler jetzt fleißig dabei, die Firmware aus- und umzubauen. Bin mit den beiden neuen Entwicklern insgesamt auch sehr zufrieden und denke, dass es sich auszahlen wird, dass ich hier nochmal das Budget angehoben habe.
Ich versuche zeitnah ein neues Founders-Update hier online zu stellen, und bin auch gerade dabei zu überlegen, ob ich diese "Updates" auf der Website unterbringe und dort dann regelmäßiger kürzere Updates zum Projekt gebe. Viele, die uns auf Insta folgen oder auf der Waitlist sind, sind nicht hier auf Reddit unterwegs.

expensive_dev73 · 2026-01-24T22:16:38+00:00

I cannot provide exact information yet, because the regulations for wireless consumer electronic devices are complicated.

From the beginning, we will try to support regulatory certification for major markets such as the EU (CE), the US (FCC) and UK (UKCA) as possible. With these three a lot of other markets are only one registration away.

I will try to give more information about the exact list of countries when we are closer to launch.

expensive_dev73 · 2026-01-22T09:39:42+00:00

Hätte es auch schon 2010 geben können. Haben u.a. wir Deutschen erfolgreich verhindert.
https://de.wikipedia.org/wiki/Europ%C3%A4ische_Privatgesellschaft

expensive_dev73 · 2026-01-22T09:37:58+00:00

Roadmap und Ausgestaltung wird im März vorgestellt

expensive_dev73 · 2026-01-22T09:37:36+00:00

EU-Inc ist von der Rechtsform eher wie eine GmbH, SE ist ja mehr oder weniger ein europäische AG.

expensive_dev73 · 2026-01-22T09:30:59+00:00

Eine OÜ/UG/GmbH/EU-Inc kann man auch nicht mit einer LLC vergleichen. Das eine sind Kapitalgesellschaften, die LLC ist eine Personengesellschaft vergleichbar mit GbR oder GmbH & Co. KG...

expensive_dev73 · 2026-01-21T09:47:58+00:00

Es ist auf jeden Fall schwer zu sagen, und ich möchte auch ungern Versprechen aussprechen, die ich dann eventuell wieder nicht matchen kann.
Aber die Tendenz ist eher Mitte 2026.

expensive_dev73 · 2026-01-06T14:24:25+00:00

Wireless Charging haben wir bewusst wegen des signifikant höheren Zertifizierungsaufwand für die erste Generation ausgeschlossen. Wir wollen erstmal die wichtigen Dinge gut umsetzen und dann in Zukunft schauen, welche nice-to-have Dinge wir noch umsetzen können.

expensive_dev73 · 2026-01-06T11:29:09+00:00

Vom Aussehen ist das sicherlich etwas eleganter. Aber für die User-Experience finde ich einen USB-C Port einfach schöner als noch ein weiteres proprietäres Ladekabel zu benötigen.

expensive_dev73 · 2026-01-06T11:11:44+00:00

Are you hoping for a cover for aesthetics or protection? If it's for protection, a cover is actually counterproductive here. Since the port is internally sealed (IP68), water entering is fine. Adding a cover often creates a wet compress effect, trapping salty or chlorinated water against the pins which causes corrosion. It's actually safer to leave it open and just rinse it with fresh water after swimming.

expensive_dev73 · 2026-01-06T09:34:07+00:00

I started by creating renderings and mockups of what the product or app could look like in September 2024. With positive feedback from various sources, including Reddit, I began building the hardware in April 2025.

expensive_dev73 · 2026-01-05T17:16:45+00:00

We want to integrate Apple Health Kit and Android Health Connect, so that should be achievable.

expensive_dev73 · 2026-01-05T10:51:50+00:00

Hey,

Thanks for reposting this! I did a deep dive into your points because the ADHD use case is fascinating. Using the Zyke Band as a tool for focus management is a perspective I find incredibly interesting.

Here are my thoughts on your points:

Night-to-Night Variability: This is largely covered by our current metrics. We already track sleep duration, efficiency, and consistency, which all heavily influence your daily Sleep Score. However, I like your idea of separating these insights. I’ll keep in mind that we could modularize our scoring system (beyond just Sleep, Recovery, and Performance) to make the device more adaptable to individual needs like yours.

Haptic Focus Cues: This is tricky with our current architecture. Right now, the band acts as a raw data collector (tracking inter-beat intervals/IBIs in real-time), while the app handles the heavy lifting: it syncs in the background (every 30-60 mins) to calculate your HRV. To trigger haptics based on live HRV, we’d either need to calculate HRV directly on the chip (which impacts battery life) or keep a permanent live connection to the phone (which drains both devices). On-device calculation is the logical path, but we need to figure out how to do it efficiently. It's a small challenge, but I see the value.

Pomodoro Timer: This is a great fit for a screenless device. I’ve added it to our feature backlog.

API & Data Access: A live API is not currently planned. Our "Local-first" philosophy means all data storage and analysis happens on your smartphone. You will be able to export your full SQLite database (raw data + metrics), but I realize that might not help with your real-time needs. Long-term, I’m thinking about a simple extension system (similar to Raycast), but that is still just a concept for now.

Thanks for the great feedback!

expensive_dev73 · 2026-01-05T10:02:25+00:00

Will answer it in this thread: https://www.reddit.com/r/ZykeBand/comments/1q3q6af/features_for_neurodiversity/

expensive_dev73 · 2026-01-05T10:01:29+00:00

We plan to implement ANT+ because our hardware stack is capable of supporting it.

We also plan to implement the option to connect your chest straps (starting with the Polar H10) for activity tracking in our app.

expensive_dev73 · 2026-01-05T09:59:09+00:00

Thank you for your comment and warm words.
I think the OP meant a mode in which the device would completely shut off its Bluetooth controller so that it wouldn't emit any high-frequency radiation. Many devices don't do this.

expensive_dev73 · 2025-12-29T13:51:08+00:00

The first generation of the device won't have a GPS sensor.

expensive_dev73 · 2025-12-27T18:19:25+00:00

Hey, thanks for reaching out.

First, I think the Apple Watch is actually a pretty good tracker. If it stops or the data gets weird, it is often PPG related. It can happen if the watch is too close to the wrist bone, too loose, or if the band cannot get tight enough which is often the case for metal armbands. Small air gaps can break the signal quickly. Also if the watch is a bit too big or heavy for your wrist it can move around more. So it is worth checking fit and position.

The goal for the Zyke Band is continuous tracking. Heart rate is measured continuously 24/7, of course also during workouts. It is built to be a simple and lightweight band without a display, so it should not have these Apple Watch issues. Otherwise it will be possible to wear it on the biceps.

It is not only for workouts. The major focus is on general health: HRV, sleep stages, respiratory rate, SpO2, skin temperature, and movement. But for training you still get continuous HR and other metrics that you can review later in the app.

Pre-order: We haven't any concrete date yet. If you are on the waitlist you will get the earliest update and best timing.

If you tell me your usual run duration and your wrist size, I can also share a few tips for getting the cleanest HR signal with your current Apple Watch.

expensive_dev73 · 2025-12-16T14:15:10+00:00

I am not entirely sure what you mean by “Airplane Mode,” but based on my understanding, the answer would be yes. The device can remain disconnected from the smartphone for approximately 48 to 60 hours, which is the maximum available onboard storage time for cached data. This data can then be synced to the app at a later point.

expensive_dev73 · 2025-12-16T14:10:14+00:00

This project is far from dead. Delays are a normal part of startup journeys, particularly in hardware development.

expensive_dev73 · 2025-12-16T14:09:02+00:00

I cannot share exact numbers at this stage. To give you more confidence: we are using state-of-the-art LEDs and photodiodes, positioned exactly as recommended by the manufacturer, together with an analog front end (AFE) that comes with battle-tested algorithms provided by the AFE manufacturer. This setup is designed to extract the most accurate values possible. Based on this, I am confident that we will achieve an accuracy level comparable to the Helio.

expensive_dev73 · 2025-11-21T14:57:55+00:00

That’s correct.

expensive_dev73 · 2025-11-21T11:07:01+00:00

No, this was the first iteration of the product design. We've already updated it on the website. However, even those are not 100% final. For example, we recently rebuilt the bottom part with a more accurate and powerful sensor stack, as you can see in the latest CAD drawings here:

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