Comparison

Liftin' vs Interval Flow

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

Head to head
About

Liftin'

This app simplifies workout tracking with automatic weight adjustments and progress visualization. It integrates with Apple Health to help you achieve your fitness goals. Try it for free with limited workouts or upgrade for unlimited tracking.

Highlights
  • Simple workout tracking
  • Automatic weight adjustment rules
  • Progress visualization graphs
  • Apple Health integration
  • Apple Watch support
Features
Read full description

Liftin' is the gym tracker for people who lift. Log a set with one tap, let your weights progress automatically, and build the program you want with AI, on iPhone, iPad, Mac and Apple Watch. TRACK WITH ONE TAP • A clean workout screen that puts your next set front and center. Log it, let the rest timer run, move on. • Live Activity and widgets keep the current set and the rest timer on your Lock Screen. • 300+ exercises with illustrations, plus your own custom exercises. • Plate calculator, warmup sets, supersets, notes, and a rest timer that follows you to the watch. PROGRESS AUTOMATICALLY • Set a progression rule per exercise and Liftin' adjusts the weights from your results: linear progression, 5/3/1 training max cycles, double progression, deloads. • Start from a built-in program: StrongLifts 5x5, Wendlers 5/3/1, nSuns, GZCLP, Push Pull Legs, Upper/Lower, PHUL and Full Body. Or build your own from scratch. • Charts for every exercise, estimated one rep max, volume, body measurements and progress photos, plus a calendar of your training. AI THAT KNOWS YOUR TRAINING • Describe the workout or program you want in your own words and Liftin' generates it with Apple Intelligence. • Liftin' in ChatGPT and Claude: ask how your bench press is progressing, add 2.5 kg to every deadlift set next week, or have a 3-day strength program built, from the assistant you already use. Works with any MCP client. APPLE WATCH • Track a whole workout from the watch alone, or mirror the workout running on your iPhone live on your wrist. • Heart rate and workouts go to Apple Health and fill your rings. INTEGRATIONS • Apple Health and Strava: your strength workouts land where the rest of your training lives. • Import your history from Hevy. Export everything as CSV whenever you want. • iCloud sync keeps iPhone, iPad and Mac on the same page. LIFTIN' UNLIMITED Liftin' is free for up to five workouts a month. Liftin' Unlimited removes the limit and unlocks all progress charts and progress photos, as a yearly or monthly subscription with a free trial, or as a one-time lifetime purchase. Current prices are shown in the app. Payment is charged to your Apple Account when you confirm the purchase. A subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period, and your account is charged for the renewal within 24 hours before that period ends. You can manage and cancel your subscriptions in your App Store account settings after purchase. Terms of use: https://liftinapp.co/terms-of-use Privacy policy: https://www.iubenda.com/privacy-policy/67887263 Liftin' is made by one person in Stockholm. Questions and ideas are welcome at feedback@liftinapp.co. Good luck with your Liftin'!

About

Interval Flow

This app revolutionizes fitness routines with deep customization and advanced tracking for various activities like HIIT, Yoga, and CrossFit. It allows users to create, share, and follow personalized workouts with features like color-coded intervals, real-time progress tracking, and voice assistance.

Highlights
  • Color-coded intervals
  • Customizable circuits
  • Real-time progress tracking
  • Voice assist and search
  • Exercise library
  • Workout sharing
Features
Read full description

Interval Flow: Experience a Workout Revolution Interval Flow is your ultimate fitness companion, designed to transform your workout experience with deep customization and advanced tracking. This versatile app is perfect for a wide range of activities including HIIT, TABATA, CrossFit, Yoga, Pilates, Meditation, and more. With Interval Flow, you can stay focused on your fitness goals while the app handles the details. Key Features: - Color-Coded Intervals: Customize your workout visually with color-coded intervals. Set distinct colors for warm-ups, high-intensity bursts, rest periods, and more, to easily navigate through your routine. - Exercise Library: Build your workouts with ease! Add new exercises or select from the existing ones to tailor your workout to your specific needs. - Real-Time Progress Tracking: Keep a live tab on your workout progress. The dynamic interval list updates in real-time, ensuring you know exactly where you are in your routine. - Customizable Circuits: Create the perfect workout sequence by arranging various exercises into repeatable circuits tailored to your fitness level and goals. - Personalized Interval Warnings: Get timely alerts before an interval ends. Customize the warning sounds to suit your style, ensuring smooth transitions without missing a beat. - Interactive Workflow: Enjoy crafting your workouts with a user-friendly interface that’s as intuitive as it is functional. Setting up your ideal workout regime is now as engaging as the workout itself. - Voice Assist: Let our advanced voice assist guide you through your exercises, announcing what’s next so you can remain focused on your form and intensity. - Voice Search: Quickly find your favorite workouts using voice commands, making your preparation seamless and hands-free. - AirShare: Share your custom workouts with friends or clients effortlessly using AirDrop, enhancing connectivity and interaction. Why Choose Interval Flow? With Interval Flow, you don't just exercise, you experience a revolution in workout efficiency and enjoyment. The app’s intuitive interface and comprehensive customization options make it the optimal companion for anyone serious about fitness. Whether you're powering through a high-intensity session or seeking tranquility in yoga, Interval Flow adapts to your pace and preference. Unlock your potential with Interval Flow – where your workout meets innovation. Interval Flow Subscription: The app includes a 1 month long auto-renewable subscription with a 3-day free trial, which will unlock premium features, like unlimited workouts, timer program editing and autoplay and costs $4.99/ month. It will be charged to your credit card through your iTunes account and will automatically renew unless you canceled at least 24 hours before the end of the current period. Any unused portion of a free trial period will be forfeited when you purchase the subscription. Though your subscription for the current month cannot be canceled, you can turn auto-renewal off in your account settings after purchase. See the instructions here: https://support.apple.com/en-us/HT202039 You can read the terms of use and privacy policy here: https://kapi90.github.io/hiit_timer_privacy_policy.html End User License Agreement (EULA) of the App Store applies: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Liftin'4 screens
Interval Flow4 screens

Verdict

The call

Liftin' and Interval Flow both sit at 4.7 stars, but that hides the real split: 92% of Liftin''s written reviews are positive against 48% of Interval Flow's. Liftin' also leads on monetization model (free with in-app purchases vs subscription) and update cadence (every 4 days vs fortnightly). Interval Flow's advantage is iOS requirement (18.6 vs 26.0). On price, rating, 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. Liftin' sells 3 in-app purchases, starting at $2.99 per month and Interval Flow sells 10 in-app purchases, starting at $4.99 per 3 months. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Liftin' against 4.7 for Interval Flow. Both are backed by a comparable volume of ratings — 786 and 167 respectively. Written reviews are what separate them: 92% of Liftin''s written reviews are positive against 48% of Interval Flow's.

UpkeepUpdate frequency

Liftin' ships an update every 4 days, Interval Flow fortnightly. The most recent releases landed on October 29, 2026 and October 23, 2026 respectively.

Scorecard6 real differences · 4 level
Liftin' versus Interval Flow: the parameters behind the verdict, then further details
ParameterLiftin'Interval Flow
PriceFreeFree
Rating4.7 (786 ratings) — better4.7 (167 ratings)
Positive reviews91.6% of reviews — better48.1% of reviews
Number of ratings786 — better167
Update frequencyEvery 4 days — betterFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPad
Requires iOS26.018.6 — better
Further details — not scored
Size342 MB20 MB
Age rating4+4+
DeveloperValter HemmiBence Kaposzta

Customer experience

Liftin'

All ratings774 ratings
Positive93.9%
Neutral1.9%
Negative4.1%
Written reviews407 reviews
Positive91.6%
Neutral4.4%
Negative3.9%

Interval Flow

All ratings168 ratings
Positive93.5%
Neutral2.4%
Negative4.2%
Written reviews27 reviews
Positive48.1%
Neutral18.5%
Negative33.3%

Bugs and requests

Liftin'

Not enough reviews yet to summarise bugs or requests.

Interval Flow

Reported bugs

10 issues
  • Programs deleted after update
  • App crashes when adding a program
  • Show/Hide Instructions adds time to interval
  • App defaults to unused workout
  • Cannot permanently skip to end of timed activity
Show 5 more
  • Intervals revert to previous settings
  • App won't remember order of custom circuit interval programs
  • Blank screen after download
  • Cannot get program to open
  • Cannot see bottom of screen on questionnaire

Requested features

5 requests
  • Increase repetitions to 20
  • Streamline adding intervals
  • Make it possible to hide unused workouts
  • Add music integration or option
  • Provide visual instructions for moves

In-app purchases

3 purchases

Liftin'

Subscriptions2
  • Liftin' Unlimited Monthly1 Month trial$2.991 Month
  • Liftin' Unlimited Yearly1 Month trial$24.991 Year
One-time1
  • Liftin' Unlimited Lifetime$99.99
10 purchases

Interval Flow

Subscriptions8
  • 3 Month$4.993 Months
  • 1 Month$9.991 Month
  • 1 Month, 3 day trial3 Days trial$9.991 Month
Show 5 more
  • Annual7 Days trial$14.991 Year
  • 1 Year discounted$25.951 Year
  • 1 Year, 3 day trial3 Days trial$39.991 Year
  • 1 Year$39.991 Year
  • 1 Year Intro month1 Month trial$39.991 Year
One-time2
  • Free Lifetime subscriptionFree
  • Lifetime$24.99

Questions

Is Liftin' free?
Liftin' is free to download, with in-app purchases available.
Is Interval Flow free?
Interval Flow is free to download, with in-app purchases available.
Which has better reviews, Liftin' or Interval Flow?
Liftin' is rated higher. Liftin' averages 4.7 out of 5 from 786 ratings, while Interval Flow averages 4.7 from 167 ratings.
Do Liftin' or Interval Flow have ads?
Neither Liftin' nor Interval Flow shows ads.
Which is updated more often, Liftin' or Interval Flow?
Liftin' ships an update every 4 days, and Interval Flow fortnightly. Most recently, Liftin' was updated on October 29, 2026 and Interval Flow on October 23, 2026.

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