Comparison

Heavier vs Liftosaur

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

Head to head
About

Heavier

This AI-powered strength training app analyzes your workout data to provide insights on progress and areas for improvement. It offers a daily AI coach with workout plans and allows for hands-free logging via voice commands.

Highlights
  • AI-assisted strength training
  • Progressive overload tracking
  • Workout volume, frequency, and balance analysis
  • Daily AI coach and workout plans
  • Voice-activated lift logging
  • Hands-free operation
Features
Read full description

HEAVIER - AI-Assisted Strength Training Progressive overload for lifters who mean business. Log Your Lifts. Zero Friction. AI analyzes your volume, frequency, and balance. You get the truth: what's working, what's lagging, where you stand. AI coach delivers a daily run-down of your workout, and a daily plan for how to get stronger. Leave your phone in the locker. Tell Siri "Record a lift in Heavier," then dictate your work: "Romanian Deadlift, 3 sets of 10 at 135 pounds." Done. Back to training. Built for lifters chasing strength, not likes.

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

Heavier4 screens
Liftosaur4 screens

Verdict

The call

The clearest difference is rating: Liftosaur at 4.9 against Heavier's 4.2. Liftosaur also leads on ratings volume (417 vs 13) and device support (3 vs 1). Heavier's advantage is in-app purchases (none vs 3). On price, review sentiment, update cadence and ads 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. Liftosaur sells 3 in-app purchases, starting at $4.99 per month. Heavier asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Liftosaur holds the better App Store score, 4.9 against 4.2. That said, the two scores are not equally well evidenced: Liftosaur has 417 ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 83% of Heavier's written reviews are positive against 90% of Liftosaur's.

UpkeepUpdate frequency

Heavier ships an update every 4 days, Liftosaur weekly. The most recent releases landed on October 6, 2026 and October 13, 2026 respectively.

Scorecard5 real differences · 5 level
Heavier versus Liftosaur: the parameters behind the verdict, then further details
ParameterHeavierLiftosaur
PriceFreeFree
Rating4.2 (13 ratings)4.9 (417 ratings) — better
Positive reviews83.3% of reviews89.9% of reviews — better
Number of ratings13417 — better
Update frequencyEvery 4 days — betterWeekly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS18.017.0 — better
Further details — not scored
Size34 MB64 MB
Age rating4+17+
DeveloperStrategic Information ServicesLiftosaur, LLC

Customer experience

Heavier

All ratings13 ratings
Positive76.9%
Neutral0.0%
Negative23.1%
Written reviews6 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

Liftosaur

All ratings417 ratings
Positive95.9%
Neutral2.4%
Negative1.7%
Written reviews79 reviews
Positive89.9%
Neutral7.6%
Negative2.5%

Bugs and requests

Heavier

Not enough reviews yet to summarise bugs or requests.

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

None

Heavier

No in-app purchases

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 Heavier free?
Heavier is free to download, with no in-app purchases.
Is Liftosaur free?
Liftosaur is free to download, with in-app purchases available.
Which has better reviews, Heavier or Liftosaur?
Liftosaur is rated higher. Heavier averages 4.2 out of 5 from 13 ratings, while Liftosaur averages 4.9 from 417 ratings.
Do Heavier or Liftosaur have ads?
Neither Heavier nor Liftosaur shows ads.
Which is updated more often, Heavier or Liftosaur?
Heavier ships an update every 4 days, and Liftosaur weekly. Most recently, Heavier was updated on October 6, 2026 and Liftosaur on October 13, 2026.

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