# B>IAM vs Built By Karl

The clearest difference is update cadence: B>IAM at every 5 weeks against Built By Karl's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. B>IAM sells 1 in-app purchase, starting at $29.99 per month and Built By Karl sells 1 in-app purchase, starting at $299.99 per month. Whichever you choose, the download price is not the number that matters.

B>IAM ships an update every 5 weeks, Built By Karl every 3 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | B>IAM | Built By Karl |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 51 MB | 56 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [P.T.321 Ltd](https://appshunter.io/developer/1761587267) | [Karl Jardine](https://appshunter.io/developer/1874177894) |

## What reviewers say

### B>IAM

[App page](https://appshunter.io/ios/app/biam/id6615083317)

This app offers comprehensive fitness and nutrition tracking to help you achieve your health goals. It allows you to log workouts, monitor body measurements, and track daily meals with personalized plans and targets. Access all your personal data to visualize your progress and stay motivated.

**Highlights:** Workout progression tracking, Nutrition logging and meal plans, Body measurement tracking, Progress picture visualization, Wearable fitness tracker synchronization, Personalized nutrition targets

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Program | $29.99 | per month |


### Built By Karl

[App page](https://appshunter.io/ios/app/built-by-karl/id6758647480)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly 1-1 | $299.99 | per month |


## Frequently asked questions

### Is B>IAM free?

B>IAM is free to download, with in-app purchases available.

### Is Built By Karl free?

Built By Karl is free to download, with in-app purchases available.

### Do B>IAM or Built By Karl have ads?

Neither B>IAM nor Built By Karl shows ads.

### Which is updated more often, B>IAM or Built By Karl?

B>IAM ships an update every 5 weeks, and Built By Karl every 3 months. Most recently, B>IAM was updated on October 21, 2026 and Built By Karl 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.*