# Metabolica vs Aligner Diary

The clearest difference is update cadence: Aligner Diary at weekly against Metabolica's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Metabolica sells 6 in-app purchases, starting at $3.99 per 7 days and Aligner Diary sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Metabolica ships an update every 3 weeks, Aligner Diary weekly. The most recent releases landed on October 24, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Metabolica | Aligner Diary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 12 MB | 47 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Gokhan Alp Atar](https://appshunter.io/developer/1793941932) | [思佳 李](https://appshunter.io/developer/1835312196) |

## What reviewers say

### Metabolica

[App page](https://appshunter.io/ios/app/metabolica-calorie-tracker/id6761029099)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $3.99 | per 7 days |
| Metabolica Premium Monthly | $8.99 | per month |
| Premium 3 Months | $19.99 | per 3 months |
| Premium Yearly Offer | $29.99 | per year |
| Yearly Premium | $53.99 | per year |
| Metabolica Premium Lifetime | $149.99 | one-time |


### Aligner Diary

[App page](https://appshunter.io/ios/app/aligner-diary/id6802318433)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro Annual | $3.99 | per year |
| Pro Lifetime | $7.99 | one-time |


## Frequently asked questions

### Is Metabolica free?

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

### Is Aligner Diary free?

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

### Do Metabolica or Aligner Diary have ads?

Neither Metabolica nor Aligner Diary shows ads.

### Which is updated more often, Metabolica or Aligner Diary?

Metabolica ships an update every 3 weeks, and Aligner Diary weekly. Most recently, Metabolica was updated on October 24, 2026 and Aligner Diary on October 5, 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.*