Comparison

Lean · 薄肌 vs HahaFit

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

Head to head
About

Lean · 薄肌

This app is an AI-powered strength training journal that tracks your workouts, provides post-session coaching, and visualizes your progress. It offers built-in programs, custom plan creation, and AI-assisted planning based on your goals and equipment.

Highlights
  • AI-assisted workout planning
  • Voice and text workout logging
  • Post-workout AI debriefs
  • Set-by-set logging with PR detection
  • Apple Watch standalone app
  • HealthKit integration
  • 3D muscle heatmap visualization
Features
Read full description

Lean, formerly LumaFit, brings strength training, hydration and sleep into one daily routine. TRAIN AND SEE YOUR PROGRESS • Follow built-in routines or create multi-day plans. • Record sets, reps, weight, RPE, cardio and workout notes. • Review personal records, training history, muscle coverage and progress trends. • Use Apple Watch, Live Activities and widgets, with optional iCloud sync. MAKE CONSISTENCY VISIBLE • Track training, water and sleep from the daily dashboard. • Optionally import sleep records from Apple Health after granting permission. • Reveal silver-blue metallic workout reports, review your best sets and share your progress. • Choose whether to include body measurements or hide absolute training weights in shared reports. CAMERA EXAMS AND ACHIEVEMENTS • Try pull-up exams and push-up counting with on-device pose recognition and live landmarks. • Switch between front and rear cameras in the camera screen. • Unlock playful fitness degree achievements, revisit them on the achievement wall, and share landscape certificates or portrait posters. • Camera video for movement recognition is processed on-device and is not recorded or uploaded. Pose counting depends on lighting, camera placement and visibility. In-app fitness degrees are entertainment achievements, not academic degrees or professional certifications. OPTIONAL AI COACHING • Ask training questions or generate editable plans and workout reviews. • Estimate meals from photos or descriptions, then review and confirm before saving. • Two free AI text chats are available each day. Additional AI features require LumaFIT Pro. • Online AI requires an internet connection and consent before relevant data is sent to the disclosed service. LUMAFIT PRO Monthly and yearly auto-renewable subscriptions are available through Apple. Any eligible introductory offer and renewal price are shown before purchase. Payment is charged to your Apple Account at confirmation. Subscriptions renew automatically unless cancelled at least 24 hours before the current period ends. Manage or cancel in your App Store account settings and restore purchases in the app. A LumaFit account is optional. Fitness guidance and meal estimates are for general reference, not medical advice. Stop exercising if you feel pain or unwell. Privacy Policy: https://lumafit.xyz/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

HahaFit

Features
Read full description

HahaFit is a lightweight fitness app that helps you build a lasting workout habit. Start with basic movements and turn small daily efforts into progress you can see. You don’t need to feel perfectly ready or push yourself to the limit. Follow a plan or simply start moving—every effort counts. AI Movement Recognition, Real-Time Rep Counting Supports push-ups, pull-ups, squats, and crunches. Position your phone, keep your body in frame, and let HahaFit count your reps so you can focus on your workout. Free Workouts, on Your Terms Choose an exercise and start training without setting sets or targets. Stop whenever you’re ready, undo reps that don’t meet your standards, and save your reps and workout time when you finish. Plan Your Daily Routine Customize sets, reps per set, workout days, and reminder times. See today’s plan, completed workouts, total reps, and workout time at a glance. Pause When Life Interrupts Your free workout pauses when you leave the app, lock your phone, or take a call. Resume or end your workout when you return. Paused time won’t count toward your workout. See Your Week in Review Weekly reports bring together your training days, total reps, and workout time, with separate exercise breakdowns for planned and free workouts. Revisit past reports and follow your consistency over time. Reminders That Fit Your Routine Choose alarm or notification reminders for your planned workouts. Finish early, and the remaining reminders for that day are canceled. Optional weekly reminders help you reflect on your efforts and start a new week. No Account Needed Workout plans and records stay on your device. Camera frames are processed on your device, never saved or uploaded. HahaFit Done is better than perfect.

Screenshots

Lean · 薄肌4 screens
HahaFit4 screens

Verdict

The call

The clearest difference is in-app purchases: HahaFit at none against Lean · 薄肌's 2. HahaFit also leads on update cadence (every 3 days vs every 3 weeks) and iOS requirement (15.0 vs 18.0). 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. Lean · 薄肌 sells 2 in-app purchases, starting at $8.99 per month. HahaFit asks for nothing beyond the download.

UpkeepUpdate frequency

Lean · 薄肌 ships an update every 3 weeks, HahaFit every 3 days. Both last shipped on October 31, 2026.

Scorecard3 real differences · 5 level
Lean · 薄肌 versus HahaFit: the parameters behind the verdict, then further details
ParameterLean · 薄肌HahaFit
PriceFreeFree
Positive reviews0.0% of reviews—
Update frequencyEvery 3 weeksEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, Apple WatchiPhone, iPod
Requires iOS18.015.0 — better
Further details — not scored
Size37 MB49 MB
Age rating4+4+
Developer海圆 马Lin Chen

In-app purchases

2 purchases

Lean · 薄肌

Subscriptions2
  • LumaFit Pro Monthly$8.991 Month
  • LumaFit Pro Yearly1 Year trial$59.991 Year
None

HahaFit

No in-app purchases

Questions

Is Lean · 薄肌 free?
Lean · 薄肌 is free to download, with in-app purchases available.
Is HahaFit free?
HahaFit is free to download, with no in-app purchases.
Do Lean · 薄肌 or HahaFit have ads?
Neither Lean · 薄肌 nor HahaFit shows ads.
Which is updated more often, Lean · 薄肌 or HahaFit?
Lean · 薄肌 ships an update every 3 weeks, and HahaFit every 3 days. Most recently, Lean · 薄肌 was updated on October 31, 2026 and HahaFit on October 31, 2026.

Other comparisons