# Primum vs ASCO

The clearest difference is ads: ASCO at none against Primum's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

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

Primum ships an update every 2 months, ASCO monthly. The most recent releases landed on August 4, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Primum | ASCO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/primum/id6651755259/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Ad-supported | — |
| Size | 53 MB | 59 MB |
| Requires iOS | **15.1** | 16 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [PRIMUM HEALTH, INC.](https://appshunter.io/developer/1707581637) | [American Society of Clinical Oncology](https://appshunter.io/developer/1513043539) |

## What reviewers say

### Primum

[App page](https://appshunter.io/ios/app/primum/id6651755259)

Connect with expert oncologists for case-specific advice and treatment decision support. This app facilitates direct messaging with specialists, offering actionable insights and a platform to manage your inquiries efficiently.

**Highlights:** Search and filter expert oncologists, Direct messaging with specialists, Real-time chat and notifications, Case-specific advice, Inbox management, Reference past inquiries

**Features:** macOS Compatibility

**In-app purchases:** none


### ASCO

[App page](https://appshunter.io/ios/app/asco/id6742142845)

**In-app purchases:** none


## Frequently asked questions

### Is Primum free?

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

### Is ASCO free?

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

### Do Primum or ASCO have ads?

Primum shows ads; ASCO does not.

### Which is updated more often, Primum or ASCO?

Primum ships an update every 2 months, and ASCO monthly. Most recently, Primum was updated on August 4, 2026 and ASCO on September 23, 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.*