# Sinister Kettlebell vs StrongFirst

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.

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.

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.

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

## The numbers

| Metric | Sinister Kettlebell | StrongFirst |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (30 ratings)](https://appshunter.io/ios/app/sinister-kettlebell/id1513275382/reviews)** | [3.6 (28 ratings)](https://appshunter.io/ios/app/strongfirst/id6451005125/reviews) |
| Number of ratings | **30** | 28 |
| Positive reviews | 66.7% of reviews | **84.2% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 9 MB | 90 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Lyons](https://appshunter.io/developer/1352747539) | [StrongFirst](https://appshunter.io/developer/1696194292) |

## What reviewers say

### Sinister Kettlebell

[App page](https://appshunter.io/ios/app/sinister-kettlebell/id1513275382)

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:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sinister Premium | $12.99 | one-time |


### StrongFirst

[App page](https://appshunter.io/ios/app/strongfirst/id6451005125)

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:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StrongFirst App Premium | $19.99 | per month |
| StrongFirst App Premium | $156.99 | per year |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*