There is always a persistent tension in the watch world. Smartwatches do a lot, but they rarely look good doing it. Analog watches look exceptional, but they’ll never ping you when you’ve hit 10,000 steps. The Ganance Heir is a small, coin-sized sensor that quietly sits on the caseback of your watch and bridges that gap… no screen, no subscription, no compromise.
Developed by a Chicago-based startup with a focus on intentional technology, the Heir attaches to the caseback of most watches using a micro suction disc. At 30 mm in diameter and just 3 mm thick, it weighs a feather-light 5 grams. You’d barely know it’s there. Swap it between watches in seconds, slot it into the HeirBand for gym days when you’d rather not ruin a leather strap with sweat, and carry on.
Designer: Ganance
The feature set is deliberately restrained. The Heir tracks steps, distance, and calories, pushing that data to the Ganance iPhone app and Apple Health. It vibrates to alert you to incoming calls and texts, and a single or double tap controls media playback. Three levels of vibration strength give you a degree of personalization, and tap input can be disabled entirely through the app. No heart rate sensor, no always-on display, no noise.
An Android app is currently in development, expected around late June alongside the next batch of shipments. At that point, the device will also sync with Google’s Health Connect, opening it up to a wider ecosystem of fitness apps. Future updates already on the roadmap include activity type splitting, sedentary time tracking, adaptive goals, a silent alarm, WhatsApp and Slack vibration alerts, task reminders, and weather-based activity recommendations.
The Heir isn’t without its limitations. Battery life sits at 42 hours, meaning a daily top-up via the proprietary dock is essentially non-negotiable. Early adopter reviews have flagged some inconsistencies with step tracking and connectivity, though Ganance says those issues are actively being addressed.
Ganance isn’t the first to explore this concept — the Chronos and Germany’s Trivoly tried similar approaches without gaining lasting traction. Whether the Heir has the staying power its predecessors lacked remains to be seen. The Heir is available to pre-order at $149, with the HeirBand priced at $39 or bundled together for $169. Shipping is expected this spring across the US, Canada, the UK, and select European countries.
