# CFS Tracker vs ME Ally

The clearest difference is update cadence: ME Ally at every 3 weeks against CFS Tracker's every 8 months. CFS Tracker's advantage is device support (4 vs 2) and iOS requirement (15.5 vs 18.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. CFS Tracker sells 16 in-app purchases, starting at $4.95 per month and ME Ally sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

CFS Tracker ships an update every 8 months, ME Ally every 3 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CFS Tracker | ME Ally |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/cfs-tracker/id6743564981/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 219 MB | 7 MB |
| Requires iOS | **15.5** | 18.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | +4 | 12+ |
| Developer | [Digital Therapeutics](https://appshunter.io/developer/1721663167) | [PAPERSONA LLC](https://appshunter.io/developer/1859835373) |

## What reviewers say

### CFS Tracker

[App page](https://appshunter.io/ios/app/cfs-tracker/id6743564981)

This app helps individuals manage energy-limiting chronic illnesses by tracking symptoms, pacing, medications, and daily activities. It provides insights into patterns and trends to better understand health and communicate with healthcare providers.

**Highlights:** Log diverse symptoms including fatigue and brain fog, Track medications, supplements, and treatments, Record activity, rest, sleep, and nutrition, Customize tracking for personal health patterns, Set reminders for health routines, Monitor post-exertional malaise (PEM) and crashes, Review symptom trends with charts and summaries

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

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| flex pass | $4.95 | per month |
| easy pass | $5.99 | per 7 days |
| flex pass | $8.99 | 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 |
| limited discount | $29.99 | per year |
| Premium Yearly | $34.99 | per year |
| yearly access | $39.99 | per year |
| Extended Trial | $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 | $99.99 | one-time |


### ME Ally

[App page](https://appshunter.io/ios/app/me-ally-symptom-tracker/id6756285601)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ME Ally Premium | $4.99 | one-time |


## Frequently asked questions

### Is CFS Tracker free?

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

### Is ME Ally free?

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

### Do CFS Tracker or ME Ally have ads?

Neither CFS Tracker nor ME Ally shows ads.

### Which is updated more often, CFS Tracker or ME Ally?

CFS Tracker ships an update every 8 months, and ME Ally every 3 weeks. Most recently, CFS Tracker was updated on October 24, 2026 and ME Ally on October 25, 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.*