Comparison

Fartlek vs JustLift

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

Head to head
About

Fartlek

Features
Read full description

Tell your AI coach your goal and the days you can run, and get a training plan that adapts every week to how your runs go. Need a single workout? Describe it or paste a screenshot, and it's ready in seconds. Then just run: voice and haptic cues guide every interval, even with your screen off. 25 workouts runners actually love โ€” HIIT, fartlek, tempo, hills, Yasso 800s. On iPhone and Apple Watch. Because running the same pace every day only makes you better at running the same pace. Break the plateau. EVERY RUN IS A NEW CHALLENGE Every workout here has a specific goal and a different feel โ€” so you actually train different muscles, systems, and skills instead of just logging miles. Your running workout is fun now :) Speed: 200m pops, ladders, strides, sprint finishers Strength: Hill repeats, power builders, switchbacks Stamina: HIIT, Cruise intervals, tempo waves, Yasso 800s Endurance: Progressive aerobic, negative splits, scenic cruises Fun: Fartlek games, stoplight play, music flow runs Each workout has a warm-up, main set, and cooldown โ€” with clear effort guidance through every phase. AI WORKOUT GENERATOR Tell the AI coach what you want โ€” "30 minutes, hill repeats, moderate" or "a fartlek that doesn't bore me" โ€” and get a runnable workout in seconds. Paste a screenshot of a workout you saw online and we'll convert it into intervals. TRAIN BY EFFORT, NOT NUMBERS Every interval shows a target effort (80% for work, 30% for recovery). No heart rate monitor needed. GPS pace lies anyway โ€” effort just works better. AUTO-LAP BY DISTANCE OR TIME Distance intervals auto-complete when you hit 200m, 400m, 800m, or whatever target you set. Time intervals count down with precision. No fumbling with lap buttons mid-stride. AUDIO & HAPTIC CUES Get notified at interval start, halfway, and end. Works with your screen off, works on Apple Watch. Built for running outside, where you can't keep glancing at a screen. APPLE WATCH COMPANION Run straight from your wrist. Leave your phone behind for track sessions โ€” the Watch app handles everything on its own. CLEAN, GET-OUT-OF-THE-WAY DESIGN Big, glove-friendly controls. Dark mode. One-screen run view with your current interval front and center, and what's next right there too. AFTER YOUR RUN Review every completed interval โ€” distance, time, pace. Auto-syncs to Apple Health. WORKOUT TYPES Tempo: Sustained-effort training Intervals: Structured speed work Fartlek: Mixed-pace playful running Hills: Uphill repeat sessions Long Run: Extended endurance efforts 3 DURATION OPTIONS Quick (10โ€“15 min): Short, sharp sessions Standard (20โ€“35 min): Complete workouts Long (40โ€“60+ min): Extended training WHO IT'S FOR - Runners looking to improve their times - Runners who like variety and fun - Amateur athletes who want to gain leg strength and power - Anyone looking to improve overall fitness and health - Anyone looking to lose weight with HIIT (High-Intensity Interval Training) - Anyone who wants to run intervals without 10 minutes of setup - Anyone tired of complex running apps that feel more like Instagram No social feeds. No data mining. Just running. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

JustLift

Features
Read full description

Track any exercise. Just type a name and start logging.ย  It doesn't have to be a real exercise.ย  You make it up, you track it. That's it. Built for the gym floor. Almost everything works with swipes and taps. No typing, no fiddling. Log your set and get back to lifting. - Swipe through your workout history day by day - New sets auto-fill from your last best - Tap to duplicate your last set - Calendar to jump to any day - Import your own data and export any time as a CSV file No programs. No templates. No social feeds.ย  Just your lifts, your way. Terms of Use: https://galvanized-ridge-e2d.notion.site/JustLift-Terms-of-Use-2f08192980f680d3a2d7c6ab95949f64

Screenshots

Fartlek4 screens
JustLift3 screens

Verdict

The call

The clearest difference is update cadence: Fartlek at every 4 days against JustLift's every 11 days. JustLift's advantage is iOS requirement (15.1 vs 18.5). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Fartlek sells 3 in-app purchases, starting at $1.99 per 7 days and JustLift sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Fartlek ships an update every 4 days, JustLift every 11 days. Both last shipped on October 30, 2026.

Scorecard2 real differences ยท 4 level
Fartlek versus JustLift: the parameters behind the verdict, then further details
ParameterFartlekJustLift
PriceFreeFree
Update frequencyEvery 4 days โ€” betterEvery 11 days
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, Apple WatchiPhone, iPod
Requires iOS18.515.1 โ€” better
Further details โ€” not scored
Size29 MB44 MB
Age rating4+4+
DeveloperAxis SAMykhaylo Olefirenko

In-app purchases

3 purchases

Fartlek

Subscriptions3
  • Weekly Plan$1.997 Days
  • Monthly premium$4.991 Month
  • Yearly Premium3 Days trial$29.991 Year
2 purchases

JustLift

Subscriptions2
  • Premium Monthly$0.991 Month
  • Premium Yearly$9.991 Year

Questions

Is Fartlek free?
Fartlek is free to download, with in-app purchases available.
Is JustLift free?
JustLift is free to download, with in-app purchases available.
Do Fartlek or JustLift have ads?
Neither Fartlek nor JustLift shows ads.
Which is updated more often, Fartlek or JustLift?
Fartlek ships an update every 4 days, and JustLift every 11 days. Most recently, Fartlek was updated on October 30, 2026 and JustLift on October 30, 2026.

Other comparisons