# C4 Negotiation vs Quadriga Events

The clearest difference is update cadence: Quadriga Events at every 6 days against C4 Negotiation's every 15 months. C4 Negotiation's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 17.4). On price, 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.

C4 Negotiation ships an update every 15 months, Quadriga Events every 6 days. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | C4 Negotiation | Quadriga Events |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 6 days** |
| Monetization | — | Ad-supported |
| Size | 35 MB | 145 MB |
| Requires iOS | **14.0** | 17.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [C4 Center for Negotiation](https://appshunter.io/developer/1524755528) | [Quadriga Media Berlin GmbH](https://appshunter.io/developer/1125805620) |

## What reviewers say

### C4 Negotiation

[App page](https://appshunter.io/ios/app/c4-negotiation/id1524755526)

**Features:** macOS Compatibility

**In-app purchases:** none


### Quadriga Events

[App page](https://appshunter.io/ios/app/quadriga-events/id1581412322)

This event app allows attendees to create personalized agendas, access digital sessions, and network with other participants. Stay updated with push notifications and share experiences on the integrated Twitterwall.

**Highlights:** Personalized agenda creation, Digital session tracking, Participant and speaker directory, Push notification updates, Digital networking via video calls, Integrated Twitterwall for sharing

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

**In-app purchases:** none


## Frequently asked questions

### Is C4 Negotiation free?

C4 Negotiation is free to download, with no in-app purchases.

### Is Quadriga Events free?

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

### Do C4 Negotiation or Quadriga Events have ads?

Neither C4 Negotiation nor Quadriga Events shows ads.

### Which is updated more often, C4 Negotiation or Quadriga Events?

C4 Negotiation ships an update every 15 months, and Quadriga Events every 6 days. Most recently, C4 Negotiation was updated on November 7, 2026 and Quadriga Events on November 3, 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.*