# Carastar Connect vs OctaApp

The clearest difference is chart position: OctaApp at #108 against Carastar Connect's unranked. Carastar Connect's advantage is iOS requirement (13.0 vs 15.1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Carastar Connect ships an update monthly, OctaApp every 6 weeks. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Carastar Connect | OctaApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.8 (375 ratings)](https://appshunter.io/ios/app/octaapp-donate-plasma/id6749645627/reviews)** |
| Number of ratings | — | **375** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | — | Free |
| Best chart rank | — | **#108** |
| Size | 185 MB | 86 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Montgomery Area Mental Health Authority Inc.](https://appshunter.io/developer/1720438861) | [Octapharma Plasma Inc.](https://appshunter.io/developer/1567406996) |

## What reviewers say

### Carastar Connect

[App page](https://appshunter.io/ios/app/carastar-connect/id6474042772)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### OctaApp

[App page](https://appshunter.io/ios/app/octaapp-donate-plasma/id6749645627)

**Currently charting:** #108 Top Free · Medical (US App Store)

This app simplifies the process of donating plasma, allowing users to find donation centers, track their eligibility for future donations, and complete health questionnaires digitally. Users can also manage their loyalty program, refer friends, and view their earnings and card balances.

**Highlights:** Find plasma donation centers, Track next donation eligibility, Complete health questionnaires digitally, Manage loyalty program and points, Refer friends for bonuses, View earnings and card balance, Check company updates and promotions

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

**In-app purchases:** none


## Frequently asked questions

### Is Carastar Connect free?

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

### Is OctaApp free?

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

### Do Carastar Connect or OctaApp have ads?

Neither Carastar Connect nor OctaApp shows ads.

### Which is updated more often, Carastar Connect or OctaApp?

Carastar Connect ships an update monthly, and OctaApp every 6 weeks. Most recently, Carastar Connect was updated on October 30, 2026 and OctaApp on November 5, 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.*