# Spartn! vs BuiltDiff

The clearest difference is in-app purchases: BuiltDiff at none against Spartn!'s 3. BuiltDiff also leads on ads (none vs shown). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Spartn! sells 3 in-app purchases, starting at $9.99 per month. BuiltDiff asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Spartn! against 5.0 for BuiltDiff. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

Spartn! ships an update monthly, BuiltDiff every 2 weeks. Both last shipped on November 4, 2026.

## The numbers

| Metric | Spartn! | BuiltDiff |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/spartn/id6476600191/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/builtdiff/id6478643263/reviews) |
| Number of ratings | 2 | 2 |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 136 MB | 3 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [Clevor](https://appshunter.io/developer/1727292919) | [Timmy Nguyen](https://appshunter.io/developer/1679678398) |

## What reviewers say

### Spartn!

[App page](https://appshunter.io/ios/app/spartn/id6476600191)

This AI-powered fitness and nutrition app helps users achieve real results by tracking workouts, monitoring nutrition, and following structured programs. It offers real-time insights, personalized AI coaching, and recovery guidance to adapt training to individual progress.

**Highlights:** AI-powered personalized coaching, Workout and nutrition tracking, Structured program library, Real-time performance insights, Recovery score and guidance, Meal tracking with barcode scanning

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spartn Premium | $9.99 | per month |
| Spartn Trainer Pro | $39.99 | per month |
| Spartn Pro Yearly Subscription | $69.99 | per year |


### 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


## Frequently asked questions

### Is Spartn! free?

Spartn! is free to download, with in-app purchases available.

### Is BuiltDiff free?

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

### Which has better reviews, Spartn! or BuiltDiff?

Spartn! and BuiltDiff are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do Spartn! or BuiltDiff have ads?

Spartn! shows ads; BuiltDiff does not.

### Which is updated more often, Spartn! or BuiltDiff?

Spartn! ships an update monthly, and BuiltDiff every 2 weeks. Most recently, Spartn! was updated on November 4, 2026 and BuiltDiff on November 4, 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.*