Zeacool Fitness Tracker with 24/7 Heart Rate: problems, parts and running costs

Checked: 2026-10-17

Summary

The FT55 is a budget tracker that covers the basics — a 1.47-inch AMOLED touchscreen, 123 sport modes, 5 ATM / IP68 water resistance and 10-14 days of battery — and its real problems are the sensors it cannot back up: blood pressure is a software estimate that runs high, sleep tracking misses awake periods, and the free Keep Health app is the weakest link. Running cost is effectively zero, since there are no consumables and no subscription. It is good value at or below $25 and weak above $35, where established alternatives have more mature apps and better-tested accuracy.

Common problems and fixes

The touchscreen is too sensitive — water droplets and clothing register as accidental taps, which is annoying during pool breaks and while the band sits on your wrist. [2]
Heart rate is logged only every 15 minutes — one user reports the band logs heart rate in 15-minute steps with no way to force a more frequent reading, so short sessions can look empty in the app history. [6]
No built-in GPS and no auto workout detection — route tracking falls back to the GPS in the connected phone, so outdoor runs need the phone with you, and the closely related variant that was tested did not start workouts automatically. [3][5]

Parts and consumables

Keep Health app — the companion app is free, needs no subscription and is updated regularly; version 4.4.21 came out in October 2026. [6]
TPU strap — the band uses a skin-friendly TPU strap that the maker calls lightweight and ergonomic; no separate strap or buckle is listed as a spare part, so a damaged band means a new tracker. [1][5]

Yearly running cost

Nothing recurring. There are no consumables and no subscription, and the Keep Health app is free [6]. The 10-14 day battery life means the tracker charges roughly twice a month, so electricity is not a cost item. The only possible outlay is a replacement charging cable if the supplied one is lost, and no price for a spare is published.

When it is a good buy

Abunda — a Zeacool tracker listed at $25.99. [8]
Review sites — the tracker is put under $25 in one round-up and just under $26 in another. [2][4]

At or below $25 the FT55 is strong value for a casual tracker: AMOLED display, 5 ATM water resistance, 24/7 heart rate and SpO2, a 10-14 day battery and 123 sport modes. Between $26 and $35 the feature set still justifies the money, but the app quality and the 1.47-inch, 123-mode variant become the deciding factors. Above $35 the case weakens.

Fitbit Inspire 3 — the better choice when app quality, sleep accuracy and brand support matter more than the AMOLED screen and the sport-mode count. [2][5]