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Guides ·12 November 2025 · 9 min read

Choosing a bike computer: what actually matters

The Moveee team

Free coaching · a real route for every ride

Bike computers are a category where it is easy to spend a great deal of money on capabilities you will never use, and equally easy to buy the cheapest option and be quietly annoyed for three years. The deciding question is not which model is best — models change annually — but which of the things they differ on actually affect your riding.

Three tiers, honestly described

Phone on the bars

Free, you already own it, and the screen is excellent.

Battery dies on a long ride, rain is a problem, it is hard to read in bright sun, and you have put your most expensive item in the most vulnerable place on the bike.

Occasional riders, and anyone testing whether they want data at all.

Entry computer

Long battery life, readable in sun, waterproof, pairs with sensors, records everything and uploads it. This is 90% of what any rider needs.

Basic or no mapping — often a breadcrumb line rather than a real map.

Most riders, honestly. The gap between this and the top tier is smaller than the price difference suggests.

Mapping computer

Full maps, turn-by-turn navigation, rerouting when you go wrong, and a screen big enough to read a junction on.

Expensive, heavier, and the batteries drain much faster with mapping active.

Riders who explore, tour, or regularly ride somewhere new. If you ride the same twelve routes, you are paying for something you will not use.

Five things that actually matter

Battery life, in your real use

Quoted figures assume a dim screen, no navigation and no live tracking. If you ride all day with mapping on, halve the number on the box. For most riders this matters more than any other specification.

Screen readability, not resolution

A transflective screen that gets clearer in bright sun beats a vivid colour screen that washes out. You will look at this in direct sunlight far more often than in a shop.

Sensor protocols

ANT+ and Bluetooth both matter. ANT+ lets one sensor talk to several devices at once — useful when a power meter feeds both your computer and a trainer app. Check what your existing kit speaks before buying.

How the data gets off it

Automatic sync over Wi-Fi or your phone, to whatever you actually use. A computer whose data needs a cable and a desktop application is a computer whose rides will eventually stop being uploaded.

Buttons or touchscreen

Buttons work with winter gloves and in rain. Touchscreens are nicer for maps and worse in exactly the conditions where you most need to change something. Both are defensible; know which you are buying.

A group of cyclists riding in open countryside
The best screen in the world is the one you can read at 40 km/h with the sun behind you.

What does not matter as much as the marketing suggests

  • On-device training metrics and "recovery advice". Every manufacturer now offers a proprietary score telling you how fit you are and whether to train today. These are built on limited inputs and are no substitute for looking at your own load — fitness, fatigue and form explained covers the metrics that actually mean something.
  • Structured-workout playback, if you mostly train indoors. Useful for outdoor intervals, irrelevant if your hard sessions happen on a trainer.
  • Extremely high map detail. You need to see the next junction, not the field boundaries.
  • Smart notifications. Opinions differ, but a device that shows you work email on a descent is solving a problem you did not have.

The data question, which is the one that lasts

A computer is a recording device. What matters over years is not the screen but whether your rides end up somewhere you can actually use them — a place where a season of riding becomes a power curve, a fitness trend and a plan, rather than 400 separate files.

Check before you buy that the device syncs automatically to the services you use. Almost all of them reach Strava; from there, rides flow into Moveee automatically, so connecting Strava once means every ride from any computer lands in your power profile and training plan without another thought. That is worth more over five years than any individual feature on a spec sheet.

Sensors: what to add, in order

  1. Heart rate. Cheap, useful, and the single most informative addition to a bare computer. Heart rate strap vs optical covers which kind.
  2. Speed and cadence. Inexpensive, and the speed sensor keeps recording in tunnels and under tree cover where GPS drops out.
  3. Power. The expensive one, and the one that changes how you train rather than how you record. Power meter vs smart trainer is the article to read before spending here — for a lot of riders the trainer is the better first purchase — and power meter types compared covers pedals against cranks against spider once you have decided.

The short version

Buy for battery life, screen readability and reliable syncing. Buy mapping only if you genuinely ride unfamiliar roads. Spend the money you saved on a power meter or a decent smart trainer, both of which will change your riding more than a larger screen ever will.

And if you are not sure whether you want any of this: ride with your phone in a case on the bars for a month. If you find yourself wanting more battery and a better screen, you have your answer — and if you never look at it, you have saved a few hundred euros.

Sources 5

Where this article summarises a study, the study itself is linked — not a write-up of it.

  1. 1 ANT+ Basics · ANT+ (Garmin Canada) · 2024
  2. 2 Cycling Power Service 1.1 · Bluetooth SIG · 2016
  3. 3 GPS Accuracy · GPS.gov, U.S. National Coordination Office for Space-Based PNT · 2024
  4. 4 Sanders D, Abt G, Hesselink MKC, Myers T, Akubat I Methods of Monitoring Training Load and Their Relationships to Changes in Fitness and Performance in Competitive Road Cycling · International Journal of Sports Physiology and Performance · 2017
  5. 5 Strava API v3 reference · Strava Developers · 2024
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