Comparison

KeyLifts vs Liftosaur

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

Head to head
About

KeyLifts

This app simplifies the 5/3/1 strength training program by automatically calculating your sets and weights. Focus on lifting and achieving new personal records without the manual math. It offers features like warm-up sets, rest timers, and custom templates, with advanced options available through a subscription.

Highlights
  • Automated 5/3/1 cycle planning
  • Personal Record (PR) alerts
  • Warm-up set tracking
  • Rest timer
  • Customizable workout templates
  • Plate calculator (Pro)
  • Progress graphs (Pro)
Features
Read full description

KeyLifts takes the math out of the 5/3/1 program so you can focus on getting stronger. Everything is planned out for you. Know exactly what you need to do as soon as you step into the gym. KeyLifts automatically calculates all your sets so you can focus on hitting new Personal Records. Planning and tracking a 5/3/1 program is time-consuming and hard. You have to calculate your training max and then calculate every single set based on your training max. It doesn't have to be like that. You could just walk into the gym every day knowing exactly what you need to lift. KeyLifts takes the math out of the 5/3/1 program so you can focus on getting stronger and hitting new PRs. Every cycle you have to redo the entire planning process, but not anymore! With one button press, you can create a new cycle with all the weights automatically calculated for you. If you haven't hit your ultimate strength goals yet then maybe it's because you have to spend so much time at the gym calculating weights for each set. Stop wasting your precious energy. Just plug in your numbers to KeyLifts and go. The 5/3/1 program is amazing for strength gains but your energy and time are wasted trying to figure out what plates you need for each set. In the upgraded Pro version you get a Plate Calculator so you focus on the things that matter. Getting stronger is about putting in the work every week but it's hard to see the progress you are making. The Pro version includes graphs of your one-rep maxes over time. Feel confident knowing you are doing the right things and making progress. If you are the type of person that likes to track everything the Pro version also includes the ability to add and track Joker sets and assistance exercises. Free Features: - Plan an entire 5/3/1 cycle with one button press - Alerts when you hit a new Personal Record (PR) - Warm-up sets - Rest Timer - 150+ templates from the 5/3/1 Books - Build your own custom templates - Track assistance exercises - Track Joker sets - Delete or swap exercises during a workout You can subscribe to the Pro version on either a monthly or yearly basis. Pro Features include: - Automatic Training Max progressions - Cloud backup and sync between devices - Plate Calculator - Graphs Terms of use: https://www.keylifts.com/terms Privacy Policy: https://www.keylifts.com/privacy This app integrates with Apple Health to sync your weight and workout data.

About

Liftosaur

This app automates strength training by allowing users to build custom progressive overload programs or use pre-built routines. It tracks workouts, visualizes progress, and automatically adjusts weights and reps based on user-defined logic, making it a smart fitness companion.

Highlights
  • Automated progressive overload
  • Scriptable workout builder (Liftoscript)
  • Pre-built popular lifting programs
  • Workout tracking and progress visualization
  • Rest timers and plate calculator
  • Body weight and measurement tracking
  • Cloud backup and cross-device sync
Features
Read full description

Liftosaur is the most customizable weightlifting app and strength training tracker and planner. # Automate Your Strength Training Build your own progressive overload programs or start with proven routines like GZCLP, 5/3/1, or Basic Beginner Routine. Track every workout, visualize your progress, and fully automate your training — all in one smart fitness app. Stop guessing your next weight. Liftosaur automatically increases or decreases your weights and reps based on the logic you define. It allows to implement any possible progressive overload logic, so you can focus on lifting while the app handles the math. Liftosaur introduces Liftoscript — a simple text language for building workouts like code. Define exercises, sets, and logic once right in text, and the app updates it automatically after each session. Example: ``` # Week 1 ## Day 1 Bent Over Row / 2x5, 1x5+ / 95lb / progress: lp(2.5lb) Bench Press / 2x5, 1x5+ / 45lb / progress: lp(2.5lb) Squat / 2x5, 1x5+ / 45lb / progress: lp(5lb) ## Day 2 Chin Up / 2x5, 1x5+ / 0lb / progress: lp(2.5lb) Overhead Press / 2x5, 1x5+ / 45lb / progress: lp(2.5lb) Deadlift / 2x5, 1x5+ / 95lb / progress: lp(5lb) ``` This makes Liftosaur the only scriptable workout app — perfect for lifters who love structure, logic, and data. # Popular Programs Included Liftosaur comes with pre-built lifting programs and templates from the strength community: • All GZCL programs: GZCLP, P-Zero, The Rippler, VHF, VDIP, General Gainz, etc • 5/3/1 and its variations • Basic Beginner Routine from r/Fitness • Strong Curves • And many more! Every program is written in Liftoscript, so you can customize every detail — sets, reps, progression rules, and deloads. # Track Everything Liftosaur isn’t just a gym tracker — it’s your complete workout planner and data companion. • Rest timers & plate calculator • Body weight and measurement tracking • Graphs for exercises and progress over time • Equipment rounding & exercise substitutions • Cloud backup and cross-device sync • Web Editor for faster program creation on desktop # Made for Powerlifters and Beginners Alike Whether you’re starting your first strength program or fine-tuning an advanced powerlifting routine, Liftosaur adapts to your style. It’s a lifting program builder, progress tracker, and gym log app — all working together to make you stronger. Weightlifting is a long game, and if you're serious about lifting, building strength and sculpting your body, Liftosaur would be a great partner in your journey. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

KeyLifts4 screens
Liftosaur4 screens

Verdict

The call

The clearest difference is iOS requirement: KeyLifts at 15.6 against Liftosaur's 17.0. On price, rating, review sentiment and ratings volume 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. KeyLifts sells 3 in-app purchases, starting at $4.99 per month and Liftosaur sells 3 in-app purchases, starting at $4.99 per month. 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 — 4.8 for KeyLifts against 4.9 for Liftosaur. Both are backed by a comparable volume of ratings — 835 and 390 respectively. Written reviews are what separate them: 88% of KeyLifts's written reviews are positive against 90% of Liftosaur's.

UpkeepUpdate frequency

KeyLifts ships an update every 4 days, Liftosaur every 6 days. Both last shipped on September 21, 2026.

Scorecard1 real difference · 9 level
KeyLifts versus Liftosaur: the parameters behind the verdict, then further details
ParameterKeyLiftsLiftosaur
PriceFreeFree
Rating4.8 (835 ratings)4.9 (390 ratings) — better
Positive reviews88.3% of reviews89.6% of reviews — better
Number of ratings835 — better390
Update frequencyEvery 4 days — betterEvery 6 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, Apple Watch
Requires iOS15.6 — better17.0
Further details — not scored
Size82 MB66 MB
Age rating4+17+
DeveloperStrongomatic, LLCLiftosaur, LLC

Customer experience

KeyLifts

All ratings835 ratings
Positive95.9%
Neutral1.8%
Negative2.3%
Written reviews128 reviews
Positive88.3%
Neutral3.9%
Negative7.8%

Liftosaur

All ratings390 ratings
Positive95.9%
Neutral2.6%
Negative1.5%
Written reviews77 reviews
Positive89.6%
Neutral7.8%
Negative2.6%

User reviews

KeyLifts

From 835 App Store ratings

What we love

  • 🚀 Excellent for 5/3/1 programming
  • 👍 Highly customizable templates
  • 🔧 Continuously improved with new features
  • 💯 Comprehensive tracking and analytics
  • 👨‍💻 Responsive and helpful developer

Room to improve

  • 🐛 Occasional crashes and bugs
  • 💰 Subscription model may be too expensive for some
  • 🤔 Confusing or unintuitive UI in some areas
  • 🔄 Difficulty making certain changes like exercise swaps

Liftosaur

From 390 App Store ratings

What we love

  • ✨ Highly customizable workouts
  • 🚀 Efficient workout tracking
  • 💡 Innovative Liftoscript feature
  • 💰 Incredible value (lifetime subscription)
  • 🤝 Excellent developer support

Room to improve

  • 📚 Steep learning curve
  • 🐛 Frequent app crashes due to updates
  • 🔄 Sync issues with Apple Health
  • 🐌 UI could use a polish
  • 🤔 Some users find it too technical

Bugs and requests

KeyLifts

Reported bugs

3 issues
  • Weights resetting unexpectedly
  • Percentage calculations not always accurate
  • Inability to remove templates from workout screen

Requested features

4 requests
  • Ability to set different training maxes for T1 and T2 lifts
  • More pre-built program templates (e.g. Juggernaut, Bromley)
  • Independent Apple Watch app (without needing iPhone)
  • Improved workout flow and exercise swapping functionality

Liftosaur

Reported bugs

8 issues
  • App crashes frequently after updates
  • Syncing issues with iPhone Health app
  • App freezes on startup screen, requires reinstallation
  • Changes to program not saving correctly
  • Error when trying to set different warm-ups for different weeks
Show 3 more
  • Cannot change equipment type from cable to barbell
  • Pulls reps and weight from wrong days
  • Newest update crashes the app, prevents program selection/editing

Requested features

4 requests
  • Dark mode option
  • Ability to use kgs for barbell and lbs for dumbbells
  • More intuitive UI for beginners
  • Improved documentation/organization of ideas

In-app purchases

3 purchases

KeyLifts

Subscriptions2
  • Monthly Plan$4.991 Month
  • A Year of KeyLifts Pro$29.991 Year
One-time1
  • Lifetime Access$99.99
3 purchases

Liftosaur

Subscriptions2
  • Monthly Subscription14 Days trial$4.991 Month
  • Yearly Subscription14 Days trial$39.991 Year
One-time1
  • Lifetime Subscription$99.99

Questions

Is KeyLifts free?
KeyLifts is free to download, with in-app purchases available.
Is Liftosaur free?
Liftosaur is free to download, with in-app purchases available.
Which has better reviews, KeyLifts or Liftosaur?
Liftosaur is rated higher. KeyLifts averages 4.8 out of 5 from 835 ratings, while Liftosaur averages 4.9 from 390 ratings.
Do KeyLifts or Liftosaur have ads?
Neither KeyLifts nor Liftosaur shows ads.
Which is updated more often, KeyLifts or Liftosaur?
KeyLifts ships an update every 4 days, and Liftosaur every 6 days. Most recently, KeyLifts was updated on September 21, 2026 and Liftosaur on September 21, 2026.

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