# Le Studio 105 vs CFS Tracker

The clearest difference is in-app purchases: Le Studio 105 at none against CFS Tracker's 16. CFS Tracker's advantage is device support (4 vs 2). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. CFS Tracker sells 16 in-app purchases, starting at $4.95 per month. Le Studio 105 asks for nothing beyond the download.

Le Studio 105 ships an update every 6 months, CFS Tracker every 8 months. The most recent releases landed on October 2, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Le Studio 105 | CFS Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/cfs-tracker/id6743564981/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 8 months |
| Monetization | — | Free with in-app purchases |
| Size | 83 MB | 219 MB |
| Requires iOS | 16.4 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 17+ | +4 |
| Developer | [Le Studio 105](https://appshunter.io/developer/6774641396) | [Digital Therapeutics](https://appshunter.io/developer/1721663167) |

## What reviewers say

### Le Studio 105

[App page](https://appshunter.io/ios/app/le-studio-105/id6478858839)

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

**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 Le Studio 105 free?

Le Studio 105 is free to download, with no in-app purchases.

### Is CFS Tracker free?

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

### Do Le Studio 105 or CFS Tracker have ads?

Neither Le Studio 105 nor CFS Tracker shows ads.

### Which is updated more often, Le Studio 105 or CFS Tracker?

Le Studio 105 ships an update every 6 months, and CFS Tracker every 8 months. Most recently, Le Studio 105 was updated on October 2, 2026 and CFS Tracker on October 8, 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.*