Comparison

PerfectTrAIner vs GainBook

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

Head to head
About

PerfectTrAIner

This app acts as an intelligent personal trainer, offering AI-powered workout plans, meal suggestions, and fitness advice. It features comprehensive tracking for workouts, nutrition, and weight, with personalized goals and insights.

Highlights
  • AI-powered personalized workout plans
  • Smart workout and progress tracking
  • Comprehensive nutrition logging
  • Personalized macro and calorie goals
  • Weight and progress visualization
  • AI-driven dietary and exercise recommendations
Features
Read full description

Transform your fitness journey with PerfectTrAIner — your intelligent personal trainer that lives in your pocket. * AI-POWERED FITNESS COACH Chat with your AI trainer anytime to get personalized workout plans, meal suggestions, and expert fitness advice. Simply describe what you want — "Create a 30-minute upper body workout with dumbbells" or "Suggest a high-protein breakfast under 500 calories" — and watch your custom plan appear instantly. * SMART WORKOUT TRACKING • Build and log custom workouts with our extensive exercise database • Track sets, reps, and weights for every exercise • View detailed exercise instructions with muscle group targeting • Add notes to specific workouts • Monitor your progress over time with workout history * COMPREHENSIVE NUTRITION TRACKING • Log meals by searching our food database, scanning barcodes, or using AI • Describe your meal in plain language — our AI analyzes and logs it automatically • Snap a photo of your food for instant nutritional analysis • Track breakfast, lunch, dinner, and snacks with daily summaries • Monitor water intake to stay properly hydrated • View detailed macro breakdowns: calories, protein, carbs, and fat * PERSONALIZED MACRO GOALS • Set custom calorie and macro targets based on your goals • Choose from popular dietary approaches or create your own • Auto-calculate macros based on your profile, goals and activity level • Track daily progress with beautiful visual dashboards • View historical data to see your nutrition trends * WEIGHT & PROGRESS TRACKING • Log daily weigh-ins to monitor your journey • Visualize weight trends with intuitive charts • View detailed statistics and analytics * PERSONALIZED EXPERIENCE • The AI learns your preferences, dietary restrictions and fitness level • Get workout suggestions that avoid exercises for any injuries • Receive meal ideas that match your dietary approach • All recommendations adapt to your goals — whether bulking, cutting, or maintaining * KEY FEATURES • Beautiful dark and light mode themes • Intuitive interface designed for quick logging • Voice input for hands-free meal descriptions • Barcode scanner for packaged foods • Camera-based food recognition • Comprehensive exercise library with instructions • Chat history to revisit past AI conversations • Cross-platform sync with secure cloud storage * PERFECT FOR • Beginners looking for guided workout plans • Experienced lifters wanting to track progress • Anyone trying to hit their macro goals and simplify how they track meals • People who want AI-powered nutrition insights • Fitness enthusiasts who value convenience Start your free trial today and discover why PerfectTrAIner is the smartest way to reach your fitness goals. Your AI coach is ready when you are. Download now and take the first step toward your best self! Terms of Use: https://perfecttrainer.app/terms-and-conditions/

About

GainBook

This workout tracker allows you to plan, log, and review your strength training progress. It offers detailed exercise tracking, customizable workout plans, and an extensive exercise library. All your data is stored locally, ensuring privacy and offline access.

Highlights
  • Workout planning and templating
  • Detailed set logging with rest timers
  • Extensive exercise library with custom options
  • Progress review with volume heatmaps
  • Local data storage and iCloud backups
  • Offline functionality
Features
Read full description

GainBook is a workout tracker built for people who take strength training seriously. Plan your workouts, log every set in the gym, and review your progress over time. There are no ads and no account required. Everything stays on your device. Start in a minute • Answer a few questions and GainBook builds a starting plan for you • Or build your own from scratch, exercise by exercise Plan your workouts • Organize routines into multiple workout plans • Build workout templates with target reps, weight, rest time, and set types (warm-up, working, drop set, failure) • Group exercises into supersets with synchronized sets • See your previous performance while editing or starting a workout • Duplicate templates or update them from completed workouts • Share your plans and history with any AI chat app you choose, then import the improved plan it suggests • Export any plan as JSON, or import one Track every workout • Log reps and weight quickly • Add or remove sets at any time • Automatic rest timer with sounds and notifications • Live workout bar so you can jump back to an active workout from anywhere in the app • Replace or skip exercises if equipment isn't available, and see what you used instead last time • Changed your mind? Undo a skipped exercise • Timed sets with countdown alerts • A reminder if you leave a workout running • Training volume is calculated correctly for dumbbells and single-leg or single-arm exercises Check in with your body • A quick check-in before each workout: pain, soreness, sleep, fatigue, illness and more • Pick from suggestions or add your own, rated 1–5 or yes/no • Dictate your before and after notes instead of typing • Spot patterns: how often each symptom shows up and how its severity trends Exercise library • Hundreds of built-in exercises with instructions, muscle groups, equipment, and images • Search by exercise name, muscle group, or equipment • Create your own custom exercises • View exercise history and see what you did last time Review your progress • Browse completed workouts with duration, volume, and set summaries • Calendar view of your training history • Muscle volume heatmap to see what you've trained • Progress analytics: see which lifts are improving, how hard your sessions feel, and how your effort trends over time • Muscle recovery map: see which muscles are ready to train again, with an optional notification when you're fully recovered • Complete workout breakdown with every set and rest period Your data stays yours • Everything is stored locally • No account or internet connection required • Export and import your complete database for backups • Optional iCloud Drive backups you can restore anytime from Settings Customize the app • Light and dark themes • Supports kg and lb • Choose whether changing an exercise's unit converts your logged weights or just changes the label • Configurable default and maximum rest times Made by someone who actually uses it I built GainBook for myself. I've spent years in the gym and years cycling through tracking apps, and every one of them was missing something I needed: the set types I actually use, supersets that behave, training volume counted correctly for dumbbells and single-side work, a rest timer that stays out of the way. GainBook is all of it in one app: fast, detailed and fully offline, with no cloud account. I train with it every week, and that is why it keeps moving. Whatever I find missing gets built, so expect new features regularly. If you prefer owning your data instead of storing it on someone else's server, that's exactly what GainBook is built for.

Screenshots

PerfectTrAIner4 screens
GainBook4 screens

Verdict

The call

The clearest difference is in-app purchases: GainBook at none against PerfectTrAIner's 2. PerfectTrAIner's advantage is update cadence (every 6 days vs every 5 weeks). 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. PerfectTrAIner sells 2 in-app purchases, starting at $8.99 per month. GainBook asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for PerfectTrAIner against 5.0 for GainBook. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

PerfectTrAIner ships an update every 6 days, GainBook every 5 weeks. The most recent releases landed on September 30, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
PerfectTrAIner versus GainBook: the parameters behind the verdict, then further details
ParameterPerfectTrAInerGainBook
PriceFreeFree
Rating5.0 (2 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings2 — better1
Update frequencyEvery 6 days — betterEvery 5 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better16.4
Further details — not scored
Size62 MB59 MB
Age rating4+4+
DeveloperAlexander BudnevichAnatolii Vedmid

Customer experience

PerfectTrAIner

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

GainBook

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

PerfectTrAIner

Subscriptions2
  • Premium Monthly$8.991 Month
  • Premium Yearly$59.991 Year
None

GainBook

No in-app purchases

Questions

Is PerfectTrAIner free?
PerfectTrAIner is free to download, with in-app purchases available.
Is GainBook free?
GainBook is free to download, with no in-app purchases.
Which has better reviews, PerfectTrAIner or GainBook?
PerfectTrAIner and GainBook are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do PerfectTrAIner or GainBook have ads?
Neither PerfectTrAIner nor GainBook shows ads.
Which is updated more often, PerfectTrAIner or GainBook?
PerfectTrAIner ships an update every 6 days, and GainBook every 5 weeks. Most recently, PerfectTrAIner was updated on September 30, 2026 and GainBook on October 31, 2026.

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