Comparison

BMI vs Fast Track Pro

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

Head to head
About

BMI

Easily calculate your Body Mass Index (BMI) and track your weight over time. Monitor your progress towards your health goals with this straightforward tool.

Highlights
  • BMI calculation
  • Weight tracking
  • Progress monitoring
  • Health goal support
Features
Read full description

Track your BMI, monitor weight progress, and stay within your healthy weight range. BMI Tracker & Calculator helps you calculate Body Mass Index, save measurements, and visualize progress through a modern dashboard designed for everyday health tracking.

About

Fast Track Pro

Features
Read full description

Fast Track Pro is an intermittent fasting timer and tracker that builds a plan around when you actually eat, then keeps it in view on your iPhone, iPad, Lock Screen, Apple Watch and widgets. A PLAN THAT FITS YOUR DAY Answer a few quick questions about your goal, your experience and your usual meal times. Fast Track Pro suggests a starting schedule (16:8, 18:6 or 20:4) and a weekly goal of 3, 5 or 7 fasting days. Switch to OMAD or a 36-hour fast any time, or build your own custom schedule. A TIMER YOU CAN SEE EVERYWHERE • One-tap start and end, with pause, resume, edit start time and extend goal • Live Activity on the Lock Screen and Dynamic Island • Home Screen, Lock Screen and StandBy widgets, with start, pause and end buttons • Apple Watch app and complications that stay in sync with your iPhone • Siri and Shortcuts: "Start fasting with Fast Track Pro", check your progress, pause, end, or log your weight LEARN WHAT EACH HOUR MEANS Follow your fast through educational stage estimates, from the fed window to longer fasting windows, with plain-language notes on what may be happening. Timings vary from person to person and are estimates, not measurements. STAY CONSISTENT • Streaks that follow calendar days, with rest days built into your weekly goal and streak freezes you earn as you go • A history calendar that shows every fast, rest day and freeze • Achievements that unlock as you reach real milestones • Optional reminders: a daily start reminder, stage and halfway alerts, and a heads-up when your fast is done • Hydration tracking with an optional water reminder SEE WHAT'S WORKING • Stats and weekly insights: fasts completed, hours fasted, average fast and how often you hit your goal • How each fast felt, and which plan and start time feel easiest for you • Weight tracking with a goal and trend chart, plus optional Apple Health sync for weight and body fat • A private progress photo journal • Shareable fast and weekly recap cards PRIVATE BY DESIGN No account. No ads. No tracking. No analytics. Your fasting history stays on your device, with optional backup to your own private iCloud (off by default). Export your data any time. PRICING Fast Track Pro requires a subscription or a one-time lifetime purchase to use. Eligible new subscribers get a 7-day free trial. • Monthly and yearly plans renew automatically • Lifetime is a one-time purchase with no renewal Payment is charged to your Apple ID when you confirm the purchase, or when the free trial ends. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the period ends. Manage or cancel in your Apple ID account settings. Any unused portion of a free trial ends when you buy a subscription. Terms of Use: https://fasttrack.duttlabs.app/terms.html Privacy Policy: https://fasttrack.duttlabs.app/privacy.html IMPORTANT Fast Track Pro is a wellness and education app, not a medical device, and it does not diagnose, treat or prevent any condition. Talk to a qualified healthcare professional before you start fasting, especially if you are pregnant or breastfeeding, under 18, have diabetes or another medical condition, take medication, or have a history of disordered eating.

Screenshots

BMI2 screens
Fast Track Pro4 screens

Verdict

The call

The clearest difference is ads: Fast Track Pro at none against BMI's shown. On price, update cadence, 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. BMI sells 1 one-off in-app purchase and Fast Track Pro sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

BMI ships an update every 6 months, Fast Track Pro every 4 months. The most recent releases landed on November 3, 2026 and November 13, 2026 respectively.

Scorecard1 real difference · 9 level
BMI versus Fast Track Pro: the parameters behind the verdict, then further details
ParameterBMIFast Track Pro
PriceFreeFree
Rating4.9 (56 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings56 — better—
Update frequencyEvery 6 monthsEvery 4 months — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS16 — better17.0
Further details — not scored
Size7 MB16 MB
Age rating4+4+
DeveloperAn BanhShankar Dutt

In-app purchases

1 purchases

BMI

One-time1
  • Upgrade Pro Version$1.99
3 purchases

Fast Track Pro

Subscriptions2
  • Fast Track Pro Monthly7 Days trial$4.991 Month
  • Fast Track Pro Yearly7 Days trial$24.991 Year
One-time1
  • Fast Track Pro Lifetime$49.99

Questions

Is BMI free?
BMI is free to download, with in-app purchases available.
Is Fast Track Pro free?
Fast Track Pro is free to download, with in-app purchases available.
Do BMI or Fast Track Pro have ads?
BMI shows ads; Fast Track Pro does not.
Which is updated more often, BMI or Fast Track Pro?
BMI ships an update every 6 months, and Fast Track Pro every 4 months. Most recently, BMI was updated on November 3, 2026 and Fast Track Pro on November 13, 2026.

Other comparisons