Comparison

FLOWBIO vs CycleJames

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

FLOWBIO

This app analyzes sweat data to provide personalized hydration and recovery strategies for athletes. It connects to a sweat sensor to track fluid and sodium loss, offering tailored plans and pre-session predictions to optimize performance.

Highlights
  • Personalized hydration strategies
  • Tailored recovery plans
  • Pre-session performance predictions
  • Intake logging
  • Support for electrolyte brands
  • Integrations with Garmin, Wahoo, Zwift, Coros
Features
Read full description

Dehydration, cramps, poor recovery? Most athletes face these problems because they don’t know what they’re really losing in sweat. The FLOWBIO System solves this. By pairing the world’s most accurate sweat sensor with the FLOWBIO App, you can finally connect sweat data to your performance, recovery, and progress. FLOWBIO Sensor: Measures your sweat in real time with lab-grade accuracy, tracking your unique fluid and sodium losses in every run, ride, and race. FLOWBIO App - Transforms your sweat data into simple, personalised hydration strategies. - Tailored recovery plans built from your actual losses. - Pre-session predictions so you start properly prepared. - Intake logging and support for your preferred electrolyte brands. Integrations: - Garmin - Wahoo - Zwift - Coros

About

CycleJames

Features
Read full description

CycleJames is a focused, single-purpose indoor cycling app for structured power-based training on FTMS-compatible smart trainers. No subscription, ever. Your data never leaves your iPhone. Connect your trainer over Bluetooth. Pick a workout. The app writes target watts to the trainer in real time so resistance follows the plan automatically, and no head unit required. Prefer to ride by feel? Switch to Free Ride and your trainer's own gears set the resistance, just like riding outdoors - while CycleJames still records every watt. WHAT YOU GET • 97 built-in workouts covering VO2max, threshold, sweet spot, endurance, recovery, sprint and tempo sessions — from 15-minute easy spins to 6-hour century-prep epics. • Live target power streaming over Bluetooth (FTMS protocol) — your trainer ets resistance for you. • Free Ride mode — drop ERG control and let your smart bike's gears drive the resistance; your power is still recorded. • Heart-rate display from any standard Bluetooth heart-rate monitor. • Adjust intensity mid-ride: scale the whole workout up or down in 5W steps, fine-tune the active interval, skip ahead, jump to any upcoming interval, or insert a custom interval on the fly. • Workout builder — design your own steady or ramp intervals and save them. • Export rides to Strava and Garmin Connect via the iOS share sheet (TCX). • Local ride history with average power, peak power, normalized power, intensity factor, and TSS for every session. • Calendar view of your training week and month. PRIVACY CycleJames keeps everything on your device. No accounts. No cloud. No analytics. No tracking. No subscription. Uninstall the app and your data goes with it. COMPATIBLE TRAINERS Any smart trainer that supports the standard FTMS Bluetooth profile, which includes most modern trainers from Wahoo, Tacx, Wattbike, Saris, Elite, JetBlack, and others. REQUIREMENTS iPhone running iOS 17 or later, plus an FTMS-compatible Bluetooth smart trainer. A Bluetooth heart-rate strap is optional. DISCLAIMER CycleJames is a fitness app, not a medical device. It does not diagnose, treat, cure or prevent any condition. Consult a qualified physician before starting any new training programme, and seek a doctor's advice before making any decisions related to your health. Stop exercising and seek medical attention if you experience pain, dizziness or other symptoms during a workout.

Screenshots

FLOWBIO4 screens
CycleJames4 screens

Verdict

The call

The clearest difference is iOS requirement: CycleJames at 17.0 against FLOWBIO's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 5, 2026 and October 15, 2026 respectively.

Scorecard1 real difference · 9 level
FLOWBIO versus CycleJames: the parameters behind the verdict, then further details
ParameterFLOWBIOCycleJames
PriceFreeFree
Rating3.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone
Requires iOS26.017.0 — better
Further details — not scored
Size37 MB2 MB
Age rating17+4+
DeveloperFLOWBIO LTDJames browne

In-app purchases

None

FLOWBIO

No in-app purchases

None

CycleJames

No in-app purchases

Questions

Is FLOWBIO free?
FLOWBIO is free to download, with no in-app purchases.
Is CycleJames free?
CycleJames is free to download, with no in-app purchases.
Do FLOWBIO or CycleJames have ads?
Neither FLOWBIO nor CycleJames shows ads.
Which is updated more often, FLOWBIO or CycleJames?
FLOWBIO ships an update fortnightly, and CycleJames fortnightly. Most recently, FLOWBIO was updated on October 5, 2026 and CycleJames on October 15, 2026.

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