Comparison

Mu. vs RIRLift

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

Head to head
About

Mu.

Features
Read full description

Mu. Mu. is a daily log for the things that affect how you feel: track mood, symptoms, habits, medications — and let patterns emerge naturally over time. Simple. Modern. Free. Private. —WHAT YOU CAN DO— *Track Events Choose what to track: insomnia, anxiety, stress, medication, or create custom events that matter to you. Log as many or as few as you like. *Log Your Mood Record how you feel on a scale of 0 to 10. *Write Notes Attach a note to any logged event or mood. *Explore Patterns View your data with intuitive charts and statistics. Filter by event type and adjust the time period to see what influences your wellbeing. *Export Your Data Download your history as a CSV or a detailed PDF report — complete with mood charts, color-coded grids, and event heatmaps. Pick the period and the events you want to include. *Apple Watch Companion Log events and your mood directly from your wrist. Data syncs automatically with your iPhone. —SOME WAYS TO USE MU.— • Mood Tracker • Medication Tracker • Pain Tracker • Symptom Journal —PRIVACY FIRST— Your data never leaves your device or iCloud. Without an account or internet connection, Mu. works entirely offline. All your entries—mood scores, events, notes—stay with you. —DESIGNED FOR YOU— Built to be intuitive and calming, by someone who uses it daily. —MEDICAL DISCLAIMER— This app is not a substitute for professional medical advice, diagnosis, or treatment. If you have concerns about your health, please consult a qualified healthcare provider. —LANGUAGES— English, French, Spanish, Arabic —CONTACT & SUPPORT— Questions or feedback? Reach out to us directly from the app's Contact section or via our website, Reddit, Discord or Instagram.

About

RIRLift

This app helps you get stronger with an AI coach and a workout log. It guides your next lift based on your performance and effort, and allows you to build personalized training plans. Track progress, view muscle maps, and even import history from other apps.

Highlights
  • AI lifting coach for guidance and planning
  • Log sets with weight, reps, and RIR
  • Build personalized workout programs
  • Train on iPhone and Apple Watch
  • Track personal records and strength trends
  • Import workout history from other apps
Features
Read full description

Get stronger with a plan, an AI coach, and a workout log that helps you decide what to do next. RIRLift brings strength training together on iPhone and Apple Watch. Build your program, track your sets, and get guidance grounded in the training you actually do. MEET RIV, YOUR AI LIFTING COACH Ask about your progress, plan your next workout, or adjust a session when your schedule changes. Riv works with your training history to put its advice in context. Preview proposed workout and program changes before applying them. KNOW WHAT TO LIFT NEXT Log your weight, reps, and reps in reserve — how many more reps you could have completed. RIRLift uses your logged performance and effort to guide your next working weight, with explanations you can inspect. BUILD A PLAN THAT FITS YOUR LIFE Start with a program based on your goals, experience, schedule, and equipment, or build your own routines. Follow a multiweek Journey to keep your sessions organized and see how your lifts develop across your program. TRAIN ON IPHONE OR APPLE WATCH Follow planned workouts and log sets from your wrist, even with your iPhone left behind. Keep your exercises, rep targets, rest timers, and effort targets close at hand throughout the session. SEE YOUR PROGRESS Track personal records, strength trends, and weekly hard sets by muscle. Use the muscle map to understand where your training volume is going, alongside recovery estimates based on your logged work. KEEP YOUR WORKOUT MOVING • Exercise demonstrations and instructions • Warm-up sets, supersets, drop sets, and rest-pause work • Exercise swaps when equipment is unavailable • A plate calculator to help load the bar • Workout notes, history, and custom exercises • Optional workout saving to Apple Health BRING YOUR TRAINING HISTORY Import workout exports from Hevy, Strong, or FitNotes so you can keep building on the work you have already done. START FREE Log workouts on iPhone and Apple Watch, keep up to four routines per program and two saved programs, and get started with Riv. AI Coach usage limits apply. RIRLift Pro adds more AI Coach access, unlimited routines and saved programs, advanced insights, Coach Fine-tune, and more. Subscription options and pricing are shown in the app. Build your plan. Log your effort. Know your next step. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Mu.4 screens
RIRLift4 screens

Verdict

The call

The clearest difference is in-app purchases: Mu. at none against RIRLift's 6. On price, update cadence, 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. RIRLift sells 6 in-app purchases, starting at $9.99 per month. Mu. asks for nothing beyond the download.

UpkeepUpdate frequency

Mu. ships an update every 10 days, RIRLift every 6 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 9 level
Mu. versus RIRLift: the parameters behind the verdict, then further details
ParameterMu.RIRLift
PriceFreeFree
Rating—4.9 (18 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—18 — better
Update frequencyEvery 10 daysEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, Apple Watch — betteriPhone, Apple Watch
Requires iOS18.617.0 — better
Further details — not scored
Size34 MB240 MB
Age rating12+4+
DeveloperLiminal PicturesScribelet

In-app purchases

None

Mu.

No in-app purchases

6 purchases

RIRLift

Subscriptions5
  • RIRLift Pro Monthly7 Days trial$9.991 Month
  • RIRLift Pro Monthly$9.991 Month
  • RIRLift Pro Yearly7 Days trial$79.991 Year
Show 2 more
  • RIRLift Pro Yearly$79.991 Year
  • RIRLift Pro Yearly1 Year trial$79.991 Year
One-time1
  • RIRLift Lifetime$199.99

Questions

Is Mu. free?
Mu. is free to download, with no in-app purchases.
Is RIRLift free?
RIRLift is free to download, with in-app purchases available.
Do Mu. or RIRLift have ads?
Neither Mu. nor RIRLift shows ads.
Which is updated more often, Mu. or RIRLift?
Mu. ships an update every 10 days, and RIRLift every 6 days. Most recently, Mu. was updated on October 28, 2026 and RIRLift on October 31, 2026.

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