# ASAS App vs Kalkulator BASDAI

The clearest difference is iOS requirement: Kalkulator BASDAI at 7.0 against ASAS App's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ASAS App ships an update every 20 months, Kalkulator BASDAI every 11 months. The most recent releases landed on October 17, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | ASAS App | Kalkulator BASDAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/asas-app/id650291528/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 11 months** |
| Monetization | Free | Free |
| Size | 45 MB | 1 MB |
| Requires iOS | 15.6 | **7.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Stichting Assessment of Spondyloarthritis international Society](https://appshunter.io/developer/650291731) | [Softwebo Sp. z o. o.](https://appshunter.io/developer/694005404) |

## What reviewers say

### ASAS App

[App page](https://appshunter.io/ios/app/asas-app/id650291528)

This medical app provides essential tools for assessing Ankylosing Spondylitis. It includes calculators for key disease activity scores and offers comprehensive information on diagnosis, classification, and treatment of spondyloarthritis.

**Highlights:** ASDAS calculator, BASDAI calculator, Spondyloarthritis classification, Diagnosis information, Treatment guidelines, ASAS Health Index

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

**In-app purchases:** none


### Kalkulator BASDAI

[App page](https://appshunter.io/ios/app/kalkulator-basdai/id932824528)

This app helps measure and evaluate disease activity for Ankylosing Spondylitis using the BASDAI index. It guides users through six questions related to key symptoms of the condition on a 1-10 scale.

**Highlights:** BASDAI index calculation, Evaluates 6 key AS symptoms, 1-10 rating scale, Quick and simple to use, Disease activity tracking

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ASAS App free?

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

### Is Kalkulator BASDAI free?

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

### Do ASAS App or Kalkulator BASDAI have ads?

Neither ASAS App nor Kalkulator BASDAI shows ads.

### Which is updated more often, ASAS App or Kalkulator BASDAI?

ASAS App ships an update every 20 months, and Kalkulator BASDAI every 11 months. Most recently, ASAS App was updated on October 17, 2026 and Kalkulator BASDAI on October 11, 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.*