# Ostron vs Cholesterol Tracker ◦ Cholio

The clearest difference is in-app purchases: Ostron at none against Cholesterol Tracker ◦ Cholio's 2. Ostron also leads on iOS requirement (15.6 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Cholesterol Tracker ◦ Cholio sells 2 in-app purchases, starting at $1.99 per 7 days. Ostron asks for nothing beyond the download.

Ostron ships an update every 5 weeks, Cholesterol Tracker ◦ Cholio every 6 weeks. The most recent releases landed on October 10, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Ostron | Cholesterol Tracker ◦ Cholio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Size | 31 MB | 14 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ostron Ltd.](https://appshunter.io/developer/1749802851) | [Ikhwan Noorsetyo](https://appshunter.io/developer/1739847271) |

## What reviewers say

### Ostron

[App page](https://appshunter.io/ios/app/ostron/id6476379366)

**Features:** macOS Compatibility

**In-app purchases:** none


### Cholesterol Tracker ◦ Cholio

[App page](https://appshunter.io/ios/app/cholesterol-tracker-cholio/id6767737679)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $1.99 | per 7 days |
| Yearly Subscription | $34.99 | per year |


## Frequently asked questions

### Is Ostron free?

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

### Is Cholesterol Tracker ◦ Cholio free?

Cholesterol Tracker ◦ Cholio is free to download, with in-app purchases available.

### Do Ostron or Cholesterol Tracker ◦ Cholio have ads?

Neither Ostron nor Cholesterol Tracker ◦ Cholio shows ads.

### Which is updated more often, Ostron or Cholesterol Tracker ◦ Cholio?

Ostron ships an update every 5 weeks, and Cholesterol Tracker ◦ Cholio every 6 weeks. Most recently, Ostron was updated on October 10, 2026 and Cholesterol Tracker ◦ Cholio on October 2, 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.*