CMF Watch 3 Pro vs Galaxy Watch 7: Is the Upgrade Worth It?

The CMF Watch 3 Pro (often searched as “CMF Watch Pro 3”) covers what most people use a smartwatch for: notifications, step and sleep tracking, GPS workouts and a bright round AMOLED screen. The Galaxy Watch 7 is worth the extra only if you want a real app platform (Wear OS 5, Google Maps, Google Wallet, third-party apps), Samsung’s health sensors, or an optional LTE model. It gives up battery life to deliver them. If none of those apply, the cheaper watch is the better buy.

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This site tests nothing itself. What follows rests on manufacturer specs and on what published reviewers reported.

The two watches side by side

Battery is the biggest difference, and it favours the cheaper watch

The 91mobiles review of the CMF Watch 3 Pro quotes the 13-day rating but reports close to eight days in mixed use, and GSMArena’s spec listing gives 17.2 hours of GPS use. That is still several times what the Samsung manages. PhoneArena calls the Galaxy Watch 7’s battery a disappointment and says it lasts about one day. Wareable names battery as the weak spot, and Coolblue’s one-week test of the 40 mm model got about two days with location off and no workouts, but usually an empty watch the morning after a workout.

If you want to wear a watch to bed for sleep tracking, a watch that needs a daily charge works against you. CGMagazine makes the same point: heavy workout tracking can force daily charging, which cuts into overnight tracking.

What the extra money actually buys

• Apps and payments. The CMF watch has no app store. The Galaxy Watch 7 runs Wear OS, so you get on-wrist Google apps, offline maps and contactless payment. This is the clearest reason to pay more.
• Health sensors. Samsung adds sensor features the CMF watch does not match, such as body-composition readings. Availability of some of them (ECG, blood pressure) depends on your country and on pairing with a Samsung phone, so check before you count on them.
• Phone-free use. Only the Samsung is sold in an LTE variant, so it can take calls and stream data away from your phone.
• Ecosystem polish. Reviewers describe the Galaxy Watch 7 as a refined, accurate tracker with improved sports tracking, though a minor refresh of the Watch 6.

What the cheaper watch does not give up

Tracking accuracy is not the clear gap you might expect. A Fossbytes review of the CMF Watch 3 Pro said its GPS readings were quite comparable to a Galaxy Watch, except calories, which differed by about 15%. That is one reviewer’s observation, not a lab measurement, and it is not a formal comparison with the Watch 7 specifically. Stuff did find the screen only adequate in strong daylight, which is the main display complaint. No independent lab such as RTINGS or NotebookCheck was found publishing a head-to-head measurement of these two, so treat the accuracy comparisons as indicative.

Who should buy which

• Choose the CMF Watch 3 Pro if you mainly want notifications, workouts and sleep data, use an iPhone, or hate charging every night.
• Choose the Galaxy Watch 7 if you are on an Android phone and want apps, payments, maps or LTE, and can live with charging daily.
• Nobody needs to skip either. The Galaxy Watch 7 is not a bad watch; it is simply the wrong spend for someone who will never open an app on it. The Samsung is useless on an iPhone, so iPhone owners should rule it out immediately.

Limits of this answer

Real-world battery varies with always-on display, GPS use and notification volume. The Galaxy Watch 7 figures here come from several reviewers rather than one test protocol. Check current software support and regional feature availability on Samsung’s and Nothing’s own pages before purchasing.