Comparison

SMART IRON Gym Workout Routine vs FatKillers

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

Head to head
About

SMART IRON Gym Workout Routine

This app provides structured, science-based gym workout programs designed for muscle growth and strength. It offers progressive overload and periodization to ensure continuous progress and prevent stagnation, making it ideal for both beginners and experienced athletes.

Highlights
  • Ready-made workout programs
  • Progressive overload guidance
  • Training periodization
  • Adaptable to fitness level
  • Detailed exercise plans
  • Progress tracking
Read full description

Your muscles are a reflection of your training volume. The higher the training volume you can effectively perform and recover from, the bigger and stronger your muscles become. In other words, the level of your muscles matches the volume of work you're capable of doing in the gym. Progressive overload is the key to growth — it's what gradually brings you to the training volume you're aiming for. Trying to force progress and skipping adaptation time leads to overtraining, injury, and zero growth. The goal we set at SMART IRON is to bring you to your target training volume smoothly, without mistakes, and as efficiently as possible SMART IRON is an app with ready-made, step-by-step workout programs for the gym that are created according to sports science principles. We've taken the best methods of professional trainers - progressive overload, periodization, and competent planning - and turned them into a convenient tool at your fingertips. If you've ever started going to the gym but quit because you didn't know what to do, SMART IRON can help you break that cycle. There are no chaotic workouts here, just clear, step-by-step plans designed to produce results. Why SMART IRON works • Training periodization - programs are divided into stages (strength, endurance, and hypertrophy) so your muscles constantly receive new stimuli. • Load progression — the app automatically tells you when to increase the weight, number of sets, or repetitions. • Detailed plans - each day of training is planned out step by step. All you have to do is show up to the gym and follow the plan. • Adaptation to your level - suitable for beginners and experienced athletes who want a systematic approach. Real results - gain muscle mass, burn fat, and increase strength and endurance. Who is this app for? • Those who are tired of starting and quitting. • Beginners who need a step-by-step gym plan. • Athletes who want to progress without stagnating. • Anyone who wants to train with a smart system, not blindly. What you get • Ready-made training programs for two, three, or more days a week. • Plans for different goals: mass gain, weight loss, and strength gain. • Detailed calculations of reps, sets, and working weights. • The ability to track your progress and make steady improvements. • Confidence — you always know what to do in the gym. How SMART IRON stands out from other apps Many apps only offer a database of exercises or random plans. SMART IRON, however, is a system that considers the entire training process, from warm-up to load cycling. This allows you to train safely without overtraining or stagnating. Training programs • Three-day FULL BODY for beginners. • Three-day FULL BODY. • Three-day SPLIT. • Three-day UPPER/LOWER. • Four-day SPLIT. • Four-day UPPER/LOWER. • Four-day UPPER/LOWER (PHUL). • Two-day plan. • Eight-week fat burning plan. • Plan with an emphasis on arm muscles. • Plan with an emphasis on chest muscles. • Plan with an emphasis on back muscles. • 6-day PPL. • Garage Gym. • Garage Gym for beginners. Subscription Details Payment will be charged to your iTunes account. Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current subscription period. Your account will be charged for renewal within 24 hours prior to the end of the current subscription period. Automatic renewals will cost the same price you were originally charged for the subscription. You can turn off auto-renewal at any time by going to your Account Settings on the App Store after purchase. Privacy Policy: https://smartiron.app/privacy.html Terms of Use: https://smartiron.app/terms.html Support: hello@smartiron.app

About

FatKillers

Estimate calorie intake by simply taking a photo of your meal. This AI-powered app helps you track your food consumption for weight loss goals. It offers detailed insights to support your journey.

Highlights
  • AI-powered calorie estimation
  • Estimate calories from dish photos
  • Weight loss tracking
  • Food consumption monitoring
  • Detailed insights
Features
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With FatKillers you can easily estimate calories just using dish photo!

Screenshots

SMART IRON Gym Workout Routine4 screens
FatKillers4 screens

Verdict

The call

The clearest difference is review sentiment: SMART IRON Gym Workout Routine at 100% against FatKillers's 50%. FatKillers's advantage is update cadence (daily vs monthly) and iOS requirement (13.4 vs 15.0). On price, ads, in-app purchases and monetization model 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. SMART IRON Gym Workout Routine sells 2 in-app purchases, starting at $7.99 per month and FatKillers sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

SMART IRON Gym Workout Routine ships an update monthly, FatKillers daily. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard3 real differences · 7 level
SMART IRON Gym Workout Routine versus FatKillers: the parameters behind the verdict, then further details
ParameterSMART IRON Gym Workout RoutineFatKillers
PriceFreeFree
Rating4.9 (22 ratings) — better—
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings22 — better—
Update frequencyMonthlyDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.013.4 — better
Further details — not scored
Size71 MB26 MB
Age rating4+12+
DeveloperLinar IslamovMAKSIM VOLOSHINSKII

Customer experience

SMART IRON Gym Workout Routine

All ratings22 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

FatKillers

Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

2 purchases

SMART IRON Gym Workout Routine

Subscriptions1
  • SMART IRON Gym - Full access$7.991 Month
One-time1
  • One Month Access$4.99
2 purchases

FatKillers

Subscriptions2
  • Monthly subscription7 Days trial$8.991 Month
  • Annual subscription7 Days trial$34.991 Year

Questions

Is SMART IRON Gym Workout Routine free?
SMART IRON Gym Workout Routine is free to download, with in-app purchases available.
Is FatKillers free?
FatKillers is free to download, with in-app purchases available.
Do SMART IRON Gym Workout Routine or FatKillers have ads?
Neither SMART IRON Gym Workout Routine nor FatKillers shows ads.
Which is updated more often, SMART IRON Gym Workout Routine or FatKillers?
SMART IRON Gym Workout Routine ships an update monthly, and FatKillers daily. Most recently, SMART IRON Gym Workout Routine was updated on November 3, 2026 and FatKillers on November 4, 2026.

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