Skip to main content

Health & Wellness buying guide

How to choose a fitness tracker

A fitness tracker is most useful when you wear it consistently, so comfort and battery life matter. Readings such as calories burned and sleep stages are estimates, so treat them as trends rather than exact numbers. Check what is locked behind a subscription and how your data is used.

Reviewed 3 official sourcesHow we rate

Weighted criteria

What matters when choosing fitness trackers

Weights add up to 100 and reflect how much each factor usually decides satisfaction. Change them to fit you in the scorecard.

  1. Tracks your activities

    25%

    Support for the activities you do, such as walking, running, cycling or swimming.

    How to check: Check the supported activity list and whether GPS is built in or uses your phone.

  2. Comfort & battery

    20%

    A band you will wear day and night, and battery life that fits your routine.

    How to check: Check battery life with heart rate and any GPS use on; try the band size.

  3. Sensor accuracy

    15%

    Heart rate, steps and GPS are estimates whose accuracy varies by activity and fit.

    How to check: Look for independent tests; compare with a chest strap or known distance if accuracy matters to you.

  4. Data & privacy

    15%

    How health data is stored and shared, and whether you can delete it.

    How to check: Read the privacy policy and check sharing and export options.

  5. Subscription costs

    15%

    Features that need a paid plan.

    How to check: Check which insights are free and what the subscription costs after any trial.

  6. Water resistance & durability

    10%

    Rating for swimming, showering and sweat.

    How to check: Check the water-resistance rating against your activities.

Avoid

Red flags

  • Claims to diagnose medical conditions without regulatory clearance.
  • Core features moved behind a subscription after purchase.
  • No way to delete your data.
  • Unrealistic battery claims with all sensors off.

Before you pay

Checklist

  1. List the activities you want to track.
  2. Check comfort and battery for daily wear.
  3. Read the subscription and privacy terms.
  4. Check phone compatibility.
  5. Check water resistance.

Ask the seller

Questions to ask

  • Which features need a subscription?
  • Can I export and delete my data?
  • Does it have built-in GPS?

After you buy

Warranty & returns

Fitness trackers usually carry a one year warranty; straps are often treated as wearing parts.

  • Check whether water damage at the rated depth is covered.
  • Keep the receipt for battery faults.

Track the return window and warranty end date

Common mistakes

Myths vs facts

Myth Calorie burn figures are exact.

Fact They are estimates. Use them for trends rather than precise targets.

Myth More steps is all that matters.

Fact Health guidance also emphasises moderate and vigorous activity and muscle strengthening.

Where this comes from

Official sources

Criteria and weights are AltFTool's editorial judgement, not a statement by these bodies. This guide is general consumer information, not professional advice.

FAQ

Fitness Trackers: common questions

How much activity should I aim for?

The WHO publishes general physical activity recommendations for different age groups. Check with a health professional if you have a condition.

Tracker or smartwatch?

Trackers are simpler with longer battery life. Smartwatches add apps and notifications.

Is sleep tracking accurate?

Sleep duration is often reasonable, but sleep stages are estimates.

Free tools

Use these with this guide

Also handy: heart rate zones, calories burned calculator

New buying guides and recall alerts, once a month

Practical checklists before big purchases. No sponsored rankings, unsubscribe in one click.