Comparison

BYLD vs ISOMTRIC

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

Head to head
About

BYLD

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Build Muscle Without Guesswork BYLD is a hypertrophy-focused workout tracker that shows how much effective training each muscle gets and how it compares with personalized weekly targets. Log your workouts, track your progress, and see where your training stands — so you can spend your effort where it matters. Know What Each Muscle Needs BYLD goes beyond counting workouts and raw sets. • Track weekly training for individual muscles • See personalized muscle targets based on your training level and goals • Measure training using effective sets, not just total sets • Account for exercise muscle contribution and training effort • See which muscles need more work and which are already covered • Explore exactly which workouts, exercises, and sets contributed to each muscle • Visualize your weekly muscle coverage on an interactive body map • Review previous weeks and monitor your consistency over time Track Every Workout Everything you need for day-to-day gym tracking: • Log sets, reps, weight, and optional RIR • Create and edit your own workout routines • Start a workout from a routine or from scratch • Add, replace, remove, and reorder exercises while you train • Edit sets at any point during your workout • Resume an active workout whenever you come back • Review and edit your workout history See Your Progress Keep track of how your training is evolving. • Follow your weekly and monthly workout activity • Track training volume, reps, and workout duration • View progress by muscle group and individual exercise • See your previous performance before your next set • Jump directly from exercise history into past workouts Train Your Way • Browse exercises by muscle and equipment • Watch exercise demonstration videos • Use metric or imperial units • Build routines around the exercises and equipment you prefer • Train with a clean, distraction-free interface BYLD is designed for lifters who want more than a workout log — and want to know whether their training is actually aligned with their muscle-growth goals. Some hypertrophy insights and advanced features require a BYLD Premium subscription. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ISOMTRIC

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Stop logging sets and start measuring strength. MUSCLE IQ SCORE Track your strength intelligence (0–130+) across all training types: weighted lifts, calisthenics holds (handstands, planche, front lever), running, and bodyweight exercises. Watch it evolve from Beginner to Legendary. MUSCLE BALANCE RADAR See which muscles need work in real-time. The time-decay radar chart shows if you're neglecting your back, shoulders, or legs — designed to catch imbalances before they become problems. PROGRESSIVE OVERLOAD TRACKING Automatic personal records, estimated 1-rep max trends, and weekly volume graphs prove you're getting stronger. 9 HOME SCREEN WIDGETS Check your IQ, streak, top PRs, and muscle balance without opening the app. PRIVACY FIRST Everything stays on your phone. No account. No server. No tracking. Full iCloud backup. FEATURES: - Strength tracker for all exercise types - Muscle IQ intelligence scoring system - Muscle balance radar chart - Personal records & 1RM tracking - Weekly volume & streak tracking - Body weight trends - 9 specialized widgets - Dark mode & 5 color themes - English, French, Spanish support Built for: Strength athletes, weightlifters, calisthenics trainers, and anyone serious about knowing their real strength.

Screenshots

BYLD4 screens
ISOMTRIC4 screens

Verdict

The call

The clearest difference is in-app purchases: ISOMTRIC at none against BYLD's 2. ISOMTRIC also leads on update cadence (every 5 days vs every 2 weeks) and iOS requirement (15.1 vs 26.0). On price, ads and device support 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. BYLD sells 2 in-app purchases, starting at $2.99 per month. ISOMTRIC asks for nothing beyond the download.

UpkeepUpdate frequency

BYLD ships an update every 2 weeks, ISOMTRIC every 5 days. Both last shipped on October 25, 2026.

Scorecard3 real differences · 3 level
BYLD versus ISOMTRIC: the parameters behind the verdict, then further details
ParameterBYLDISOMTRIC
PriceFreeFree
Update frequencyEvery 2 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhoneiPhone, iPod — better
Requires iOS26.015.1 — better
Further details — not scored
Size64 MB20 MB
Age rating4+4+
DeveloperCEKA ARES E.E.IULIIA SANDUTSA

In-app purchases

2 purchases

BYLD

Subscriptions2
  • Byld Premium Monthly$2.991 Month
  • Byld Premium Monthly14 Days trial$19.991 Year
None

ISOMTRIC

No in-app purchases

Questions

Is BYLD free?
BYLD is free to download, with in-app purchases available.
Is ISOMTRIC free?
ISOMTRIC is free to download, with no in-app purchases.
Do BYLD or ISOMTRIC have ads?
Neither BYLD nor ISOMTRIC shows ads.
Which is updated more often, BYLD or ISOMTRIC?
BYLD ships an update every 2 weeks, and ISOMTRIC every 5 days. Most recently, BYLD was updated on October 25, 2026 and ISOMTRIC on October 25, 2026.

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