How Accurate Is the Casio F-B100W Step Tracker Compared to Apple Watch Ultra 4?

Compare the simple Casio F-B100W step counter with the advanced Apple Watch Ultra 4 to see if a budget retro watch can match a premium fitness tracker in step accuracy.

How Accurate Is the Casio F-B100W Step Tracker Compared to Apple Watch Ultra 4?
Laura Simmons

Laura Simmons

Health & Fitness Tech Editor

Covers wearables, fitness apps, recovery tech, and digital wellness trends.

How Does the Casio F-B100W Track Steps Compared to High-End Smartwatches?

The Casio F-B100W is a retro-style digital watch with basic Bluetooth functionality that includes step tracking and phone-finding features. Despite its low price, it uses onboard sensors to estimate steps walked, much like full-feature fitness trackers. It lacks advanced workout segmentation but provides daily step counts accessible via an app. The Apple Watch Ultra 4, by contrast, integrates comprehensive sensors with precise workout tracking and detailed health metrics, costing over 10 times more than the Casio.

What Was the Step Tracking Accuracy in a Direct Comparison?

I tested my Apple Watch Ultra 4 against Casio's cheap step-counting retro  watch, the Casio F-B100W — and both watches' calculations were shockingly  similar, despite the huge price difference | TechRadar
I tested my Apple Watch Ultra 4 against Casio's cheap step-counting retro watch, the Casio F-B100W — and both watches' calculations were shockingly similar, despite the huge price difference | TechRadar

When worn simultaneously for a 5km run, both devices recorded very close step counts. After adjusting for incidental steps taken before the run officially started, the Casio registered 4,641 steps while the Apple Watch Ultra 4 reported 4,679 steps. This is a difference of just 38 steps, a negligible variation given their price gap and differing sensor capabilities.

What Should Users Consider When Choosing Between These Trackers?

If your main goal is simple step counting and you prefer minimalist design with a retro look, the Casio F-B100W offers reliable accuracy at a fraction of the price. However, it does not provide advanced metrics like heart rate, GPS, or workout-specific data. For users seeking in-depth fitness analytics, the Apple Watch Ultra 4 remains unmatched but also comes with a significantly higher cost and complexity.

Key Takeaway: When Is a Budget Step Tracker Enough?

Casio F-B100W - the cult digital watch makes a connected comeback
Casio F-B100W - the cult digital watch makes a connected comeback

For people focused solely on counting daily steps and increasing overall activity without needing detailed health data, the Casio F-B100W represents excellent value with impressive accuracy. It’s a practical choice for those who want simplicity, retro style, and dependable step tracking without investing in an expensive premium smartwatch. Those requiring sophisticated fitness features should consider devices like the Apple Watch Ultra 4.

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