# BuffMeter vs IJZER

The clearest difference is update cadence: BuffMeter at every 4 days against IJZER's every 9 days. IJZER's advantage is iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. BuffMeter sells 3 in-app purchases, starting at $4.99 per 7 days and IJZER sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

BuffMeter ships an update every 4 days, IJZER every 9 days. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | BuffMeter | IJZER |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (7 ratings)](https://appshunter.io/ios/app/buffmeter-weight-loss-tracker/id6758816413/reviews)** | — |
| Number of ratings | **7** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 9 days |
| Monetization | Free with in-app purchases | — |
| Size | 29 MB | 35 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 9+ | 9+ |
| Developer | [Power Craft Training, LLC](https://appshunter.io/developer/1713622568) | [Thore Beelen](https://appshunter.io/developer/6799875536) |

## What reviewers say

### BuffMeter

[App page](https://appshunter.io/ios/app/buffmeter-weight-loss-tracker/id6758816413)

This app uses AI to analyze your physique from a photo, providing detailed scores for muscle groups and an overall fitness level. It also generates AI-powered visualizations of your potential future body based on your goals and offers personalized daily targets for health habits.

**Highlights:** AI physique analysis from photos, Individual muscle group scoring, AI-generated future physique visualization, Personalized daily health targets, Progress charts for body fat and weight, Integration with Apple Health

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access – Weekly | $4.99 | per 7 days |
| Premium Access - Monthly | $19.99 | per month |
| Premium Access - Yearly | $49.99 | per year |


### IJZER

[App page](https://appshunter.io/ios/app/ijzer-workout-tracker/id6799875534)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $1.99 | per month |
| Premium Annual | $14.99 | per year |


## Frequently asked questions

### Is BuffMeter free?

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

### Is IJZER free?

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

### Do BuffMeter or IJZER have ads?

Neither BuffMeter nor IJZER shows ads.

### Which is updated more often, BuffMeter or IJZER?

BuffMeter ships an update every 4 days, and IJZER every 9 days. Most recently, BuffMeter was updated on October 3, 2026 and IJZER on October 8, 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.*