# FUNCAP vs CFS Tracker

The clearest difference is rating: FUNCAP at 5.0 against CFS Tracker's 3.0. FUNCAP also leads on in-app purchases (none vs 16). CFS Tracker's advantage is device support (4 vs 1) and iOS requirement (15.5 vs 17.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. CFS Tracker sells 16 in-app purchases, starting at $4.95 per month. FUNCAP asks for nothing beyond the download.

FUNCAP holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

FUNCAP ships an update every 5 months, CFS Tracker every 8 months. Both last shipped on September 20, 2026.

## The numbers

| Metric | FUNCAP | CFS Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/funcap/id6504595383/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/cfs-tracker/id6743564981/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 8 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 219 MB |
| Requires iOS | 17.0 | **15.5** |
| Devices | iPhone | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 12+ | +4 |
| Developer | [David Davies-Payne](https://appshunter.io/developer/1583153011) | [Digital Therapeutics](https://appshunter.io/developer/1721663167) |

## What reviewers say

### FUNCAP

[App page](https://appshunter.io/ios/app/funcap/id6504595383)

This app helps individuals diagnosed with ME/CFS self-evaluate and record their functional capacity. It uses questionnaires to assess various domains and can generate PDF reports, optionally including heart and movement metrics. Data is integrated with HealthKit and is not transferred elsewhere.

**Highlights:** ME/CFS functional capacity assessment, FUNCAP55 and FUNCAP27 questionnaires, PDF report generation, Optional heart and movement metrics, HealthKit integration, Data privacy focused

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is FUNCAP free?

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

### Is CFS Tracker free?

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

### Which has better reviews, FUNCAP or CFS Tracker?

FUNCAP is rated higher. FUNCAP averages 5.0 out of 5 from 4 ratings, while CFS Tracker averages 3.0 from 2 ratings.

### Do FUNCAP or CFS Tracker have ads?

Neither FUNCAP nor CFS Tracker shows ads.

### Which is updated more often, FUNCAP or CFS Tracker?

FUNCAP ships an update every 5 months, and CFS Tracker every 8 months. Most recently, FUNCAP was updated on September 20, 2026 and CFS Tracker on September 20, 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.*