COROS ApexvsFitbit Charge

24d vs 7d

battery life

COROS Apex lasts longer

$309

price gap

Fitbit Charge cheaper

25g

lighter

Fitbit Charge

COROS Apex

Buy/Wait:good

Current model just released

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Fitbit Charge

Buy/Wait:bad

Late in cycle — a new model is likely coming

Full details →

	COROS Apex	Fitbit Charge
Pricing
Starting price	$429	$120★
Subscription	✓ None	ℹ️ Optional — $79/yr
Hardware
Weight	40g	15g★
Water resistance	5ATM	50m
Battery	24 days★	7 days
Always-on display	❌	❌
GPS	✅	✅
Cellular	❌	❌
Platform	iOS & Android	iOS & Android
Tier	Sports GPS	Fitness Tracker
Buy timing
Released	Oct 15, 2025	Sep 28, 2023
Cycle advice	good★	bad
Deals advice	neutral	great★
Next model	—	Fitbit Charge 7 (Expected 2026)

Health Sensors

COROS Apex only

1 exclusive sensor

Training LoadCumulative workout stress over time

Both

4 shared

Heart RateContinuous or on-demand pulse tracking

SpO2Blood oxygen saturation, tracked during sleep

HRVHeart rate variability — stress & recovery scores

Skin TempOvernight changes linked to illness or cycle tracking

Fitbit Charge only

2 exclusive sensors

ECGDetects irregular heart rhythms (AFib)

EDA / StressSkin conductance sensor measuring stress responses

Why buy each?

COROS Apex

65h GPS, 24-day battery (46mm)

The 46mm Apex 4 delivers 65 hours of GPS tracking and 24 days typical use — enough for multi-day mountain events without charging. The 42mm offers 41h GPS and 15 days.

Full offline maps and depth gauge

Global topographic maps with instant rendering, turn-by-turn navigation, POIs, and an underwater depth gauge — the Apex 4 is the first COROS mid-tier with a depth sensor.

Speaker, microphone, and voice notes

Audio alerts, hands-free calling, and voice pin recording — a first for the Apex line, adding practical trail and daily-wear convenience to this mountain sports watch.

Fitbit Charge

ECG and EDA stress in a slim band

Full ECG, electrodermal activity stress sensing, SpO2, and continuous heart rate in a tracker thinner than most smartwatches.

Google apps integration

Google Maps navigation, Google Wallet NFC payments, and YouTube Music controls — more useful on-device apps than any previous Charge.

7-day battery with GPS

7 days of typical use, dropping to around 30 minutes per GPS workout session before needing a charge.

Quick Winner

The right pick depends on what you optimize for.

Bottom Line

Technical gaps

Apex-only sensors: Training Load.
Charge-only sensors: ECG, EDA / Stress.
Weight. Charge is 25g lighter — relevant for all-day comfort and sleep.

Commercial gaps

Hardware cost. Charge is $309 cheaper upfront ($120 vs $429).

Pick the COROS Apex if…

Trail runners, ultramarathon athletes, and multisport competitors who want full offline maps and long GPS battery without paying Vertix 2S prices. The speaker and depth gauge make the Apex 4 more capable than any previous Apex for mixed adventure and triathlon use.

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Pick the Fitbit Charge if…

Anyone who wants serious health and fitness tracking without the bulk or cost of a full smartwatch. Works with both Android and iPhone, making it the most accessible Fitbit tracker in the lineup.

Full details →