# Kalibra vs The 1% Project

The clearest difference is in-app purchases: The 1% Project at none against Kalibra's 1. Kalibra's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Kalibra sells 1 in-app purchase, starting at $19.99 per month. The 1% Project asks for nothing beyond the download.

Kalibra ships an update every 2 weeks, The 1% Project every 2 months. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Kalibra | The 1% Project |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 63 MB | 56 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Kalibra](https://appshunter.io/developer/1569689809) | [Malek El Ghaziri](https://appshunter.io/developer/1793598302) |

## What reviewers say

### Kalibra

[App page](https://appshunter.io/ios/app/kalibra/id1569689807)

This app applies physical science methods to health, quantifying and analyzing markers through precise diagnostics and advanced data analysis. It integrates with Apple Health to guide users toward a balanced physical, mental, and social well-being.

**Highlights:** Precise diagnostic measurements, Advanced data analysis, Machine learning insights, Inferential statistics, Apple Health integration, Holistic health balance guidance

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Enhanced (monthly) | $19.99 | per month |


### The 1% Project

[App page](https://appshunter.io/ios/app/the-1-project/id6741214548)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kalibra free?

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

### Is The 1% Project free?

The 1% Project is free to download, with no in-app purchases.

### Do Kalibra or The 1% Project have ads?

Neither Kalibra nor The 1% Project shows ads.

### Which is updated more often, Kalibra or The 1% Project?

Kalibra ships an update every 2 weeks, and The 1% Project every 2 months. Most recently, Kalibra was updated on November 3, 2026 and The 1% Project on October 28, 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.*