# BuiltDiff vs Sterk.

The clearest difference is rating: BuiltDiff at 5.0 against Sterk.'s 4.6. Sterk.'s advantage is iOS requirement (15.1 vs 17.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BuiltDiff holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 2 and 5 respectively.

BuiltDiff ships an update every 2 weeks, Sterk. every 3 weeks. The most recent releases landed on June 11, 2026 and August 12, 2026 respectively.

## The numbers

| Metric | BuiltDiff | Sterk. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/builtdiff/id6478643263/reviews)** | [4.6 (5 ratings)](https://appshunter.io/ios/app/sterk/id6739846652/reviews) |
| Number of ratings | 2 | **5** |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 3 MB | 57 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Timmy Nguyen](https://appshunter.io/developer/1679678398) | [Thomas Theodor Corne Rooskens](https://appshunter.io/developer/1787284126) |

## What reviewers say

### BuiltDiff

[App page](https://appshunter.io/ios/app/builtdiff/id6478643263)

Log your weightlifting sets and reps with a clean, distraction-free interface. Visualize your progress with charts and personalize the app's appearance. Enjoy offline functionality and a sign-up-free experience for efficient workouts.

**Highlights:** Log lifts, sets, and reps, Create custom workout routines, Offline functionality, Sign-up-free experience, Visualize progress with charts, Personalize app appearance

**Features:** macOS Compatibility

**In-app purchases:** none


### Sterk.

[App page](https://appshunter.io/ios/app/sterk/id6739846652)

Effortlessly log your exercise sets with intelligent predictions and review comprehensive statistics for each movement and training session. This streamlined application is designed to help you achieve your fitness objectives.

**Highlights:** Smart set prediction, Detailed exercise stats, Workout logging, Intuitive interface, Fitness goal tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BuiltDiff free?

BuiltDiff is free to download, with no in-app purchases.

### Is Sterk. free?

Sterk. is free to download, with no in-app purchases.

### Which has better reviews, BuiltDiff or Sterk.?

BuiltDiff is rated higher. BuiltDiff averages 5.0 out of 5 from 2 ratings, while Sterk. averages 4.6 from 5 ratings.

### Do BuiltDiff or Sterk. have ads?

Neither BuiltDiff nor Sterk. shows ads.

### Which is updated more often, BuiltDiff or Sterk.?

BuiltDiff ships an update every 2 weeks, and Sterk. every 3 weeks. Most recently, BuiltDiff was updated on June 11, 2026 and Sterk. on August 12, 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.*