Comparison

Sinister Kettlebell vs StrongFirst

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

Head to head
About

Sinister Kettlebell

Master the Simple & Sinister kettlebell program with this fitness app. Track swings and get-ups, view progress, and access instructional videos. Upgrade for advanced tracking and timers.

Highlights
  • Track kettlebell swings and get-ups
  • Log workout time and details
  • Comprehensive workout history
  • Introduction to Simple & Sinister program
  • Instructional YouTube video links
  • In-app timers for workouts
Features
Read full description

Sinister Kettlebell is a focused workout timer and training log for Simple & Sinister-style sessions. Run your swings and Turkish get-ups without distractions, record the weight used for every set, and save completed workouts to Apple Health. Choose one-handed or two-handed swings, enter the exact kettlebell weights you own, and correct saved sessions when needed. Use the iPhone and Apple Watch apps in English, French, or German. Free features: - Guided swing and get-up workout flow - Custom kettlebell weights - One-handed and two-handed swing tracking - Recent workout history - CSV export - Apple Health workout saving Premium is a one-time purchase—no subscription: - Complete workout history - Time and strength progress charts - Detailed swing and get-up timing - Apple Watch app No ads. No subscription.

About

StrongFirst

This fitness app offers personalized strength training programs using kettlebells, barbells, and bodyweight. It provides expert guidance with video demonstrations, progress tracking, and a supportive community. Access educational content to deepen your understanding of strength and conditioning.

Highlights
  • Personalized training programs
  • Expert guidance with video demonstrations
  • Progress tracking
  • Variety of exercises (kettlebell, barbell, bodyweight)
  • Flexible scheduling
  • Community support
  • Educational articles and tips
Features
Read full description

The StrongFirst Training App is a dynamic and comprehensive fitness application designed to promote strength, resilience, and overall physical well-being using kettlebells, barbells, or bodyweight movement standards. It brings the world-renowned StrongFirst methods and principles to your fingertips, providing you with a variety of tailored programs to suit your individual fitness goals. KEY FEATURES AND BENEFITS PERSONALIZED PROGRAMS The App offers customizable training programs, ensuring that every workout is tailored to your specific needs and fitness goals. EXPERT GUIDANCE: StrongFirst is a globally recognized authority in strength training, and the app brings this expertise directly to your mobile device. Each exercise is demonstrated with clear, easy-to-follow videos and detailed instructions, ensuring proper form and technique. PROGRESS TRACKING The App allows you to track your progress over time, providing a comprehensive overview of your improvement and achievements. This makes it easy to stay motivated and committed to your fitness journey. VARIETY OF PRACTICES AND PROGRAMS The App covers a wide range of strength-building, hypertrophy-building, fat-burning, and conditioning exercises using kettlebells, bodyweight, and barbells, ensuring a diverse and balanced training regime. FLEXIBLE SCHEDULING The App allows you to adjust your training schedule according to your availability, making it a practical solution for busy individuals. COMMUNITY SUPPORT By using the StrongFirst Training App, you become a part of a supportive and motivated community of individuals who share similar fitness goals. EDUCATION In addition to practical training sessions, the app provides informative articles and tips on strength and conditioning training, helping you understand the science behind the exercises and improve your overall approach to fitness. The StrongFirst Training App is not just a training tool; it’s an educational platform that promotes a better understanding of strength and conditioning principles. By integrating the StrongFirst methodology into your regular training routine, or using it as your only training routine, you’re not only working towards better physical fitness, but also developing a resilient mindset that values strength, discipline, and perseverance. StrongFirst Privacy Policy: https://www.strongfirst.com/privacy-policy/ GymCloud End User Agreement: https://www.gymcloud.com/legal/

Screenshots

Sinister Kettlebell4 screens
StrongFirst4 screens

Verdict

The call

The clearest difference is rating: Sinister Kettlebell at 4.0 against StrongFirst's 3.6. StrongFirst's advantage is review sentiment (84% vs 67%) and iOS requirement (15.0 vs 26.0). On price, ratings volume, 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. Sinister Kettlebell sells 1 one-off in-app purchase and StrongFirst sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Sinister Kettlebell holds the better App Store score, 4.0 against 3.6. Both are backed by a comparable volume of ratings — 30 and 28 respectively. Written reviews complicate that: 67% of Sinister Kettlebell's written reviews are positive against 84% of StrongFirst's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
Sinister Kettlebell versus StrongFirst: the parameters behind the verdict, then further details
ParameterSinister KettlebellStrongFirst
PriceFreeFree
Rating4.0 (30 ratings) — better3.6 (28 ratings)
Positive reviews66.7% of reviews84.2% of reviews — better
Number of ratings30 — better28
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS26.015.0 — better
Further details — not scored
Size9 MB90 MB
Age rating4+4+
DeveloperMichael LyonsStrongFirst

Customer experience

Sinister Kettlebell

All ratings30 ratings
Positive73.3%
Neutral6.7%
Negative20.0%
Written reviews21 reviews
Positive66.7%
Neutral14.3%
Negative19.0%

StrongFirst

All ratings28 ratings
Positive60.7%
Neutral7.1%
Negative32.1%
Written reviews19 reviews
Positive84.2%
Neutral5.3%
Negative10.5%

In-app purchases

1 purchases

Sinister Kettlebell

One-time1
  • Sinister Premium$12.99
2 purchases

StrongFirst

Subscriptions2
  • StrongFirst App Premium7 Days trial$19.991 Month
  • StrongFirst App Premium7 Days trial$156.991 Year

Questions

Is Sinister Kettlebell free?
Sinister Kettlebell is free to download, with in-app purchases available.
Is StrongFirst free?
StrongFirst is free to download, with in-app purchases available.
Which has better reviews, Sinister Kettlebell or StrongFirst?
Sinister Kettlebell is rated higher. Sinister Kettlebell averages 4.0 out of 5 from 30 ratings, while StrongFirst averages 3.6 from 28 ratings.
Do Sinister Kettlebell or StrongFirst have ads?
Neither Sinister Kettlebell nor StrongFirst shows ads.
Which is updated more often, Sinister Kettlebell or StrongFirst?
Sinister Kettlebell ships an update every 3 weeks, and StrongFirst every 3 weeks. Most recently, Sinister Kettlebell was updated on October 20, 2026 and StrongFirst on October 24, 2026.

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