Comparison

Polar Flow vs Jack Steel's Protein Tracker

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

Head to head
About

Polar Flow

This app helps you track daily activity, analyze workouts with detailed metrics, and gain insights into sleep patterns and recovery. It allows for device management, route planning, and seamless syncing with other popular fitness platforms.

Highlights
  • Activity Tracking
  • Training Analysis
  • Sleep Insights
  • Training Load & Recovery
  • Device & Profile Management
  • Wireless Syncing
  • Third-Party Service Integration
Features
Read full description

Polar Flow: Your Personal Sports, Fitness, and Health Companion The exclusive app designed to maximize the potential of your Polar devices. Key Features: Activity Tracking: Monitor your daily activity, steps, calories burned, and distance to stay motivated throughout the day. Training Analysis: Dive deep into your workouts with detailed data on heart rate, speed, pace, distance, power, and more. Understand the impact of each session and optimize your training routines. Sleep Insights: Discover how well you sleep with advanced sleep tracking. Get feedback on sleep stages and quality to improve your rest and recovery. See how sleep boosts your day and track skin temperature changes. Training Load & Recovery: Understand how your training sessions strain your body and get recommendations on recovery time to prevent overtraining. Manage your watch and profile: Customize and manage your Polar device, Sports profiles for different activities, Routes, and Training Targets. Wireless Syncing: Automatically sync data from your Polar devices for real-time updates, notifications, and other insights. Stay Connected: Connect your profile and sync your data with Strava, TrainingPeaks, Adidas, komoot, and many other services. Why Choose Polar Flow? Personalized Guidance: Receive personalized feedback and guidance and understand your progress. Comprehensive Ecosystem: Integrates seamlessly with Polar watches, heart rate monitors, and more for a holistic experience. User-Friendly Interface: Navigate your data effortlessly with our intuitive and clean design. Notification support: Your Polar watch will receive the same notifications as your phone screen—incoming calls, messages, and app notifications. Secure and Private: Your data is safely stored and protected, giving you peace of mind as you focus on your journey. Polar Flow app allows you to share some of your wellness data with Apple Health. This includes details of your training, your heart rate, and steps. Please note Polar Flow app is not intended for medical or diagnostic use. Get Started Today! Download Polar Flow and unlock the full potential of your Polar devices. You can find more info at https://www.polar.com/flow Connect with us! Instagram: www.instagram.com/polarglobal Facebook: www.facebook.com/polarglobal YouTube: www.youtube.com/polarglobal Find out more about Polar products at https://www.polar.com/en/products

About

Jack Steel's Protein Tracker

Read full description

Jack Steel is a cartoon strongman who lives in your phone and runs on protein. You log what you ate; he gets bigger. That's the deal. FEED HIM PROTEIN Log in seconds with the pump slider or one-tap repeat chips for the amounts you use most. Every gram fills the muscle groups you trained today, and when you hit your daily goal, Jack Steel celebrates — fire, smoke, the works. YOUR GOAL, YOUR NUMBER You set your own daily protein goal, and the app tracks it. It doesn't ask your weight, and it doesn't pick a number for you. Not sure where to start? Tap "Don't know your number?" for a chart of what published guidelines say, by body weight, with the sources listed. They're general figures, not advice for you — pick your number with a physician, dietitian, or other qualified health provider. KEEP THE STREAK ALIVE Streaks, levels, and a full history calendar of every day you've logged. Miss a day and progress just slows — nothing shames you, nothing resets out of spite. Optional reminders ask you to log what you already ate; they never tell you to eat. BUILT LIKE A TANK, PRIVATE LIKE A VAULT No account. No ads. No tracking. Your log history lives on your phone and nowhere else — delete the app and it's gone. The Health & Safety screen, including crisis and eating-disorder support resources, is always readable without paying. --- Jack Steel's Protein Tracker is a paid app. Your first session is yours to try - log some protein and watch him grow. After that a purchase is required to keep using it. The Yearly plan starts with a 7-day free trial for new subscribers. What you get Everything: logging your protein, setting your own daily goal, your streak, your levels, your full history, reminders, and every celebration and backdrop. There is nothing else to buy and no other purchases inside the app. Free without paying The Health & Safety screen, including crisis and eating-disorder support resources, is readable without paying. Ways to pay — pick one • Monthly — $0.99 per month, auto-renewing • Yearly — 7 days free, then $9.99 per year, auto-renewing. The free trial is for new subscribers; Apple decides eligibility (one free trial per Apple Account). Cancel at least 24 hours before the trial ends and you are not charged. • Lifetime — $30, one payment, does not renew The Lifetime option is a one-time purchase, not a subscription. It does not renew and there is nothing to cancel. If you already have a subscription, buying Lifetime does not cancel it — cancel that yourself in your App Store account settings. For the monthly and yearly options: payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage your subscription and turn off auto-renewal in your Apple ID account settings after purchase. Privacy Policy: https://twilight-celestite-fdb.notion.site/Jack-Steel-s-Protein-Tracker-Privacy-Policy-3b3d96d65d8e811ba2edd49e249b5a93 Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Polar Flow4 screens
Jack Steel's Protein Tracker4 screens

Verdict

The call

The clearest difference is update cadence: Jack Steel's Protein Tracker at every 10 days against Polar Flow's monthly. Jack Steel's Protein Tracker also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support 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. Polar Flow sells 1 in-app purchase, starting at $8.99 per month and Jack Steel's Protein Tracker sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Polar Flow ships an update monthly, Jack Steel's Protein Tracker every 10 days. The most recent releases landed on October 26, 2026 and October 4, 2026 respectively.

Scorecard2 real differences · 8 level
Polar Flow versus Jack Steel's Protein Tracker: the parameters behind the verdict, then further details
ParameterPolar FlowJack Steel's Protein Tracker
PriceFreeFree
Rating4.6 (50K ratings) — better—
Positive reviews49.6% of reviews—
Number of ratings50K — better—
Update frequencyMonthlyEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size189 MB37 MB
Age rating4+12+
DeveloperPolar ElectroWrist Skill Labs LLC

Bugs and requests

Polar Flow

Reported bugs

3 issues
  • App crashes during syncing
  • Inconsistent data sync between watch and app
  • Firmware updates causing loss of user data

Requested features

4 requests
  • Ability to manually edit workout data
  • Integration with more third-party apps
  • More advanced training programs and coaching
  • Improved sleep tracking and analysis

Jack Steel's Protein Tracker

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Polar Flow

Subscriptions1
  • Polar Fitness Program1 Month trial$8.991 Month
3 purchases

Jack Steel's Protein Tracker

Subscriptions2
  • Monthly$0.991 Month
  • Yearly7 Days trial$9.991 Year
One-time1
  • Lifetime$30.00

Questions

Is Polar Flow free?
Polar Flow is free to download, with in-app purchases available.
Is Jack Steel's Protein Tracker free?
Jack Steel's Protein Tracker is free to download, with in-app purchases available.
Do Polar Flow or Jack Steel's Protein Tracker have ads?
Neither Polar Flow nor Jack Steel's Protein Tracker shows ads.
Which is updated more often, Polar Flow or Jack Steel's Protein Tracker?
Polar Flow ships an update monthly, and Jack Steel's Protein Tracker every 10 days. Most recently, Polar Flow was updated on October 26, 2026 and Jack Steel's Protein Tracker on October 4, 2026.

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