# Co.Fit Studio vs SickDays

The clearest difference is in-app purchases: Co.Fit Studio at none against SickDays's 2. Co.Fit Studio also leads on ads (none vs shown) and iOS requirement (15.1 vs 18.0). On price, update cadence and device support there is nothing between them.

Both are free to download. SickDays sells 2 in-app purchases, starting at $0.99 per 7 days. Co.Fit Studio asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 18, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Co.Fit Studio | SickDays |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.3 (9 ratings)](https://appshunter.io/ios/app/sickdays-headache-tracker/id6670275544/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 73 MB | 24 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Xoda Pty Ltd](https://appshunter.io/developer/1662306656) | [Florian Schweizer](https://appshunter.io/developer/1142213239) |

## What reviewers say

### Co.Fit Studio

[App page](https://appshunter.io/ios/app/cofit-studio/id6502597011)

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

**In-app purchases:** none


### SickDays

[App page](https://appshunter.io/ios/app/sickdays-headache-tracker/id6670275544)

Easily log your healthy and sick days to gain insights into your well-being. Track symptoms for colds, allergies, or migraines with daily reminders and intuitive features to make informed health decisions.

**Highlights:** Track healthy and sick days, Log symptoms for various conditions, Daily reminders, Intuitive logging, Health pattern insights, Wellness monitoring

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Weekly) | $0.99 | per 7 days |
| Pro (Yearly) | $19.99 | per year |


## Frequently asked questions

### Is Co.Fit Studio free?

Co.Fit Studio is free to download, with no in-app purchases.

### Is SickDays free?

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

### Do Co.Fit Studio or SickDays have ads?

SickDays shows ads; Co.Fit Studio does not.

### Which is updated more often, Co.Fit Studio or SickDays?

Co.Fit Studio ships an update every 2 months, and SickDays every 2 months. Most recently, Co.Fit Studio was updated on September 18, 2026 and SickDays on October 24, 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.*