# Correlation Finder vs Asthma Tracker

The clearest difference is rating: Asthma Tracker at 3.7 against Correlation Finder's 2.0. Correlation Finder's advantage is in-app purchases (none vs 18) and update cadence (every 2 months vs every 6 months). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Asthma Tracker sells 18 in-app purchases, starting at $4.95 per month. Correlation Finder asks for nothing beyond the download.

Asthma Tracker holds the better App Store score, 3.7 against 2.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Correlation Finder ships an update every 2 months, Asthma Tracker every 6 months. The most recent releases landed on June 5, 2026 and August 23, 2026 respectively.

## The numbers

| Metric | Correlation Finder | Asthma Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (2 ratings)](https://appshunter.io/ios/app/correlation-finder/id6497331166/reviews) | **[3.7 (3 ratings)](https://appshunter.io/ios/app/asthma-tracker-astira/id6743555558/reviews)** |
| Number of ratings | 2 | **3** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 68 MB | 239 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Livanda - Internetkliniken AB](https://appshunter.io/developer/1607972909) | [Digital Therapeutics](https://appshunter.io/developer/1721663167) |

## What reviewers say

### Correlation Finder

[App page](https://appshunter.io/ios/app/correlation-finder/id6497331166)

Discover how your daily habits impact your health. Track sleep, diet, exercise, and mood to uncover hidden correlations. Visualize data with clear graphs and diagrams for deeper well-being insights.

**Highlights:** Track sleep, exercise, diet, and mood, Create custom tracking parameters, Analyze correlations between habits and health, Visualize data with graphs and diagrams, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Asthma Tracker

[App page](https://appshunter.io/ios/app/asthma-tracker-astira/id6743555558)

This app helps individuals manage asthma by tracking symptoms, medication, triggers, and peak flow readings. It provides reminders, visual charts, and exportable logs to gain insights and share data with healthcare providers.

**Highlights:** Symptom tracking with severity and duration, Medication and inhaler reminders, Peak flow monitoring, Trigger identification, Visual trend charts, Apple Health integration, Exportable logs

**Features:** macOS Compatibility, Siri integration, Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (18)**

| Purchase | Price | Billing |
| --- | --- | --- |
| steady pass | $4.95 | per month |
| easy pass | $7.99 | per 7 days |
| weather max | $9.99 | per 3 months |
| flex pass | $18.99 | per month |
| carey ai max | $19.99 | per month |
| yearly access | $19.99 | per year |
| smart pass | $24.99 | per year |
| carey ai ultra | $29.99 | per month |
| plus | $29.99 | per year |
| Premium Yearly | $29.99 | per year |
| limited discount | $29.99 | per year |
| Extended Trial | $39.99 | per year |
| yearly access | $39.99 | per year |
| 7-Day Trial | $49.99 | per year |
| store credit | $1.99 | one-time |
| carey ai credits | $8.99 | one-time |
| Lifetime Upgrade | $119.99 | one-time |
| lifetime upgrade | $119.99 | one-time |


## Frequently asked questions

### Is Correlation Finder free?

Correlation Finder is free to download, with no in-app purchases.

### Is Asthma Tracker free?

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

### Which has better reviews, Correlation Finder or Asthma Tracker?

Asthma Tracker is rated higher. Correlation Finder averages 2.0 out of 5 from 2 ratings, while Asthma Tracker averages 3.7 from 3 ratings.

### Do Correlation Finder or Asthma Tracker have ads?

Neither Correlation Finder nor Asthma Tracker shows ads.

### Which is updated more often, Correlation Finder or Asthma Tracker?

Correlation Finder ships an update every 2 months, and Asthma Tracker every 6 months. Most recently, Correlation Finder was updated on June 5, 2026 and Asthma Tracker on August 23, 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.*