Comparison

InsideTracker vs FastFit

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

Head to head
About

InsideTracker

This app analyzes your blood, DNA, and fitness tracker data to provide personalized, science-backed recommendations for improving your health and well-being. It offers a guided program with actionable insights on nutrition, supplements, and exercise to help you feel stronger and live longer.

Highlights
  • Blood, DNA, and fitness tracker data analysis
  • Personalized Action Plan
  • Nutrition and supplement recommendations
  • Exercise and habit guidance
  • InnerAge analysis
  • AI-powered health guide
Features
Read full description

Want to quickly unlock your strongest, healthiest body and mind? When you join InsideTracker, you enter a guided program that turns your blood, DNA, and fitness tracker data into simple, science-backed recommendations. It’s effective, but not complicated. Think high-impact rather than high effort. After one blood test: • 80% of people improve at least one at-risk biomarker • 60% of people reduce their InnerAge • 75% improve at least one Healthspan Category Score (such as fitness, sleep, or hormone health) Download the app to start your membership. TRACK EVERYTHING Your data unlocks your recommendations—which is why InsideTracker goes so deep. You’ll track your blood, DNA, nutrition, and fitness tracker data in one place. You’ll also self-report information such as dietary preferences, supplement intake, and workout habits. For blood and DNA testing, you can purchase tests through us, or you can upload data you already have from another provider. FOLLOW YOUR PERSONALIZED ACTION PLAN As a member, you’ll receive a personalized Action Plan complete with foods, supplements, exercises, and other healthy habits. All of your recommendations will be based on a curated body of research that includes thousands of clinical studies. VALIDATE YOUR HEALTHY CHOICES With repeat blood testing, you’ll quickly see the impact of each recommendation. You’ll learn exactly what works and what doesn’t, and over time, you’ll develop a sixth sense about how your body responds to different foods, supplements, and training routines. BUILD YOUR MOTIVATION Most health plans fail as soon as people start feeling lost. InsideTracker won’t let that happen. We’ll keep you on track with ongoing support. Along with your Action Plan, you’ll get: • Weekly Healthspan Habit Reports Keep your routine dialed in with one personalized habit to focus on every 7 days. • Daily ProTips Access spontaneous moments of health with real-time recommendations based on your sleep, workouts, and other activities. • InnerAge Slow or reverse your aging with an analysis of your body’s true age—plus recommendations to drive it lower. • Terra Become an expert in your body by talking to a personalized AI guide that has access to your health data. • Healthspan Category Scores Focus on what matters most with blood tests and analysis for 10 key health areas, including fitness, sleep, inflammation, and hormone health. • Nutrition DeepDive Improve your sleep, workout recovery, and overall energy with your personalized nutrition and meal-timing report. ABOUT INSIDETRACKER InsideTracker was founded in Cambridge, Mass., in 2009 by experts in aging, genetics, and biology. Today, it's the industry leader in personalized health. Using blood, DNA, fitness, and nutrition data, it provides personalized recommendations for living longer, looking younger, and achieving peak performance. Whether you're an athlete, professional, or parent, InsideTracker can deliver peak health in a way that fits seamlessly into your life. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

FastFit

Features
Read full description

The FastFit® app is your personal companion on your health and fitness journey. Designed exclusively for members, this app combines everything you need to stay on track, stay accountable, and see real results — all in one place. FEATURES: ► Comprehensive Appointment Management Book, modify, and track your strength training and nutrition coaching sessions with ease. ► Advanced Progress Tracking See your strength gains, body composition changes, and health metrics visualized with clean, detailed charts. ► Seamless Profile Updates Quickly update your contact info and preferences for a smooth experience. ► Exclusive Shopping Portal Get access to premium supplements, protein, and hand-picked fitness gear. WHO IS THIS APP FOR? This app is made exclusively for members of FastFit® as a way to maximize your health and wellness journey. HOW TO START? Simply download the app, log in to your account, and explore your member-exclusive features. WHY CHOOSE US? We’ve spent 25 years helping tens of thousands of members transform their bodies and lives. Now, you can streamline your membership experience and take your results to the next level—all from your phone.

Screenshots

InsideTracker4 screens
FastFit4 screens

Verdict

The call

The clearest difference is in-app purchases: FastFit at none against InsideTracker's 2. FastFit also leads on update cadence (every 6 days vs fortnightly) and iOS requirement (15.6 vs 17.0). On price, ads 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. InsideTracker sells 2 in-app purchases, starting at $149.00 per year. FastFit asks for nothing beyond the download.

UpkeepUpdate frequency

InsideTracker ships an update fortnightly, FastFit every 6 days. The most recent releases landed on September 9, 2026 and September 22, 2026 respectively.

Scorecard3 real differences · 7 level
InsideTracker versus FastFit: the parameters behind the verdict, then further details
ParameterInsideTrackerFastFit
PriceFreeFree
Rating3.4 (341 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings341 — better—
Update frequencyFortnightlyEvery 6 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPod — better
Requires iOS17.015.6 — better
Further details — not scored
Size112 MB94 MB
Age rating17+12+
DeveloperSegterra IncThe Perfect Workout Inc.

Bugs and requests

InsideTracker

Reported bugs

5 issues
  • Syncing with Apple Health not working properly
  • Inability to check in or check off daily recommendations
  • Constant need to re-login
  • Notifications not working as expected
  • Garmin integration not working

Requested features

2 requests
  • Ability to import nutrition data from Apple Health
  • Ability to manually enter sleep data

FastFit

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

InsideTracker

Subscriptions1
  • InsideTracker membership$149.001 Year
One-time1
  • InnerAge 2.0$89.99
None

FastFit

No in-app purchases

Questions

Is InsideTracker free?
InsideTracker is free to download, with in-app purchases available.
Is FastFit free?
FastFit is free to download, with no in-app purchases.
Do InsideTracker or FastFit have ads?
Neither InsideTracker nor FastFit shows ads.
Which is updated more often, InsideTracker or FastFit?
InsideTracker ships an update fortnightly, and FastFit every 6 days. Most recently, InsideTracker was updated on September 9, 2026 and FastFit on September 22, 2026.

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