When Nothing first launched its audio ecosystem, the companion app—simply branded as Nothing X—was a tidy hub for managing earbuds and headphones. Fast‑forward to July 2025, and you’ll find that same app sporting a full design overhaul, deeper health‑data insights and, most notably, integration with CMF smartwatches for the first time.

The most obvious change in the updated Nothing X app is its interface. Gone are the blocky panels and monochrome icons; in their place, you’ll find a lighter palette, rounded cards and more prominent, at‑a‑glance metrics for battery levels, firmware versions and health stats like heart rate and sleep quality.

Under the hood, Nothing says animations are smoother, menus load faster and the overall connection to its Bluetooth devices is more stable. This should be welcome news to anyone who’s cursed at a timed‑out pairing or a sluggish refresh when checking battery percentages.

Back in June, Nothing quietly announced that the standalone CMF Watch app would be folded into Nothing X. Now, with the latest release live on Android and iOS, owners of the CMF Watch Pro, Watch Pro 2 and the newly released Watch 3 Pro can control their timepieces from the same interface that handles their Buds Pro 2 and Phone 1.

Community posts confirm the transition is more than skin‑deep. CMF’s forum moderators walked users through a data‑migration process: unbind your watch in the old CMF Watch app, pair it in Nothing X, then choose a date range—stretching back as far as October 2023—to transfer workouts, sleep logs, heart‑rate records, blood‑oxygen levels and more. The CMF Watch app itself will remain available until July 2026, giving stragglers a full year to make the switch without losing historical data.

One big motivator for the consolidation is performance. The CMF Watch 3 Pro highlights a dual‑band GPS setup and an upgraded four‑channel heart‑rate sensor—features that need reliable firmware‑app communication to shine. Nothing promises that, post‑update, users will see faster lock‑times for satellite signals and fewer dropped Bluetooth connections during outdoor workouts.

At the same time, notifications—another weak spot for affordable wearables—now sync more reliably, so you’ll catch that Slack pings or incoming call alert without the dreaded half‑second lag.

One small footnote: if you’re using a Nothing Phone 1 or 2, you may never open the Nothing X app. Its core features—Bluetooth pairing, audio controls and basic firmware updates—are baked into the phone’s Settings app by default. The standalone app really shines on non‑Nothing Android and iOS devices, where it’s the one‑stop shop for everything from ear‑bud EQ tweaks to chest‑strap‑style heart‑rate monitoring.

Whether you’re an early adopter or a late‑night fitness fanatic, the new Nothing X app is worth a download. Expect to see quicker connections, cleaner visuals and a more cohesive experience—especially if you’ve got CMF watches in your gadget drawer.