Comparison

Heavier vs Training OP

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

Training OP

Features
Read full description

Training Overload Progression (TrainingOP) is a strength and hypertrophy app that helps you progress steadily, increase training density and avoid injuries or overtraining. It provides a structured, long-term system that automatically adjusts reps, weights and microcycle length based on your real performance, so you can focus on training instead of spreadsheets. Whether you are a beginner or experienced lifter, TrainingOP is built for natural, sustainable progress without unnecessary plateaus or exhaustion. Key features: • Per-exercise progression – An exercise is counted as successful as soon as you complete at least one set at the planned weight with the target reps, so progression can move forward earlier. • Fine weight control – Use 0.5 kg increments when creating programs and editing 100% working weights for smoother, more precise loading. • Weekly set tracking – See how many sets each muscle group gets per week and balance your volume with a simple training map. • Cardio training builder – Create your own interval-based cardio sessions or use existing cardio workouts on a dedicated cardio screen. • Adaptive overload – Increase reps within your chosen range and let the app raise the weight automatically once you reach the top. • Plateau detection and deloads – If you fail to complete an exercise for several sessions, TrainingOP suggests around a 10% weight reduction so you can rebuild and push past sticking points. • Light days and recovery – Easily add 50% intensity days to keep frequency high while reducing stress on joints and the nervous system. • Custom programs and sharing – Use prebuilt plans or design your own, then export and import programs via JSON to share or back them up. • Intelligent rest timer – Rest times adapt to intensity and include a subtle pulse in the last seconds, smoother text scaling and a high-contrast rest colour for better visibility. • Clear summaries and stats – SummaryCard highlights your max reps and shows a set-by-set breakdown, while statistics reveal weekly volume trends and muscle-group workload. • Polished cross-platform UI – Smoother BottomTab animations and layout tweaks improve readability and responsiveness on both iOS and Android. TrainingOP is for lifters who want long-term strength and muscle gains without burning out. The app’s self-adjusting programming keeps your training productive whether you progress quickly or slowly. Terms of Use: https://training-overload-progression-landing.vercel.app/terms-of-use Privacy Policy: https://training-overload-progression-landing.vercel.app/privacy-policy

Screenshots

Heavier4 screens
Training OP4 screens

Verdict

The call

The clearest difference is in-app purchases: Heavier at none against Training OP's 2. Heavier also leads on update cadence (every 4 days vs monthly). Training OP's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price 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. Training OP sells 2 in-app purchases, starting at $2.99 per month. Heavier asks for nothing beyond the download.

UpkeepUpdate frequency

Heavier ships an update every 4 days, Training OP monthly. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.

Scorecard4 real differences · 6 level
Heavier versus Training OP: the parameters behind the verdict, then further details
ParameterHeavierTraining OP
PriceFreeFree
Rating4.2 (13 ratings) — better—
Positive reviews83.3% of reviews—
Number of ratings13 — better—
Update frequencyEvery 4 days — betterMonthly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS18.015.1 — better
Further details — not scored
Size34 MB60 MB
Age rating4+4+
DeveloperStrategic Information ServicesOleksandr Tolkachov

In-app purchases

None

Heavier

No in-app purchases

2 purchases

Training OP

Subscriptions2
  • Pro Monthly$2.991 Month
  • Pro Yearly$24.991 Year

Questions

Is Heavier free?
Heavier is free to download, with no in-app purchases.
Is Training OP free?
Training OP is free to download, with in-app purchases available.
Do Heavier or Training OP have ads?
Neither Heavier nor Training OP shows ads.
Which is updated more often, Heavier or Training OP?
Heavier ships an update every 4 days, and Training OP monthly. Most recently, Heavier was updated on October 6, 2026 and Training OP on October 4, 2026.

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