# CSL Plasma vs Proesis Bio Donor

The clearest difference is review sentiment: Proesis Bio Donor at 100% against CSL Plasma's 19%. Proesis Bio Donor also leads on rating (4.4 vs 3.5) and monetization model (ad-supported vs free with in-app purchases). CSL Plasma's advantage is ratings volume (2K vs 16) and chart position (#53 vs unranked). 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.

Proesis Bio Donor holds the better App Store score, 4.4 against 3.5. That said, the two scores are not equally well evidenced: CSL Plasma has 2K ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 19% of CSL Plasma's written reviews are positive against 100% of Proesis Bio Donor's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | CSL Plasma | Proesis Bio Donor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (2K ratings)](https://appshunter.io/ios/app/csl-plasma/id1503641894/reviews) | **[4.4 (16 ratings)](https://appshunter.io/ios/app/proesis-bio-donor/id6446638032/reviews)** |
| Number of ratings | **2K** | 16 |
| Positive reviews | 18.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Best chart rank | **#53** | — |
| Size | 60 MB | 117 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [CSL Plasma](https://appshunter.io/developer/1503641893) | [Proesis Biologics Inc](https://appshunter.io/developer/1678541028) |

## What reviewers say

### CSL Plasma

[App page](https://appshunter.io/ios/app/csl-plasma/id1503641894)

**Currently charting:** #53 Top Free · Medical (US App Store)

Streamline your plasma donation experience. Complete health screenings online, skip lines, and manage your rewards to earn extra points redeemable for cash. Find donation centers, get tips, and connect with customer service.

**Highlights:** Complete online health screening, Skip kiosk line, Activate iGive Rewards, Manage reward points, Find local promotions, Refer friends for points

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Smooth and efficient process
- 👍 Professional and friendly staff
- 💰 Generous compensation for donations
- 🤝 Helpful referral program

**What reviewers complain about**

- 🐛 Frequent app crashes and bugs
- 🔁 Endless update loop with no actual update
- ❌ Inability to log in or access account
- 🕰️ Long wait times at donation centers
- 💳 Issues with debit card and payment processing

**Reported bugs**

- App prompting for update that doesn't exist
- Account information not syncing or disappearing
- Consent videos and other features not working
- Notification issues and errors

**Requested features**

- Integrate health questionnaire into app
- Add option to schedule appointments
- Improve rewards program and points system
- Provide more transparency on donation payouts


### Proesis Bio Donor

[App page](https://appshunter.io/ios/app/proesis-bio-donor/id6446638032)

This app facilitates plasma donation by allowing users to easily sign up, schedule appointments, and manage their rewards. It connects donors with recipients to show the impact of their contributions, aiming for a rewarding and convenient donation experience.

**Highlights:** Donor registration, Appointment scheduling, Rewards management, Connect with recipients, View donation impact, Streamlined collection process

**In-app purchases:** none


## Frequently asked questions

### Is CSL Plasma free?

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

### Is Proesis Bio Donor free?

Proesis Bio Donor is free to download, with no in-app purchases.

### Which has better reviews, CSL Plasma or Proesis Bio Donor?

Proesis Bio Donor is rated higher. CSL Plasma averages 3.5 out of 5 from 2K ratings, while Proesis Bio Donor averages 4.4 from 16 ratings.

### Do CSL Plasma or Proesis Bio Donor have ads?

Neither CSL Plasma nor Proesis Bio Donor shows ads.

### Which is updated more often, CSL Plasma or Proesis Bio Donor?

CSL Plasma ships an update every 2 months, and Proesis Bio Donor every 2 months. Most recently, CSL Plasma was updated on November 3, 2026 and Proesis Bio Donor on October 27, 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.*