Zulip vs CERN Campus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zulip
This app provides organized team chat for groups of any size, enabling users to read and respond to messages in context. It helps maintain focus by allowing users to catch up on topics of interest at their own pace. The application is open-source and available as a cloud service or self-hosted solution.
- Organized team chat
- Contextual message reading
- Topic-based conversations
- Focus maintenance
- Open-source software
- Cloud and self-hosted options
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Zulip (https://zulip.com/) helps teams of all sizes be more productive together, from a few friends hacking on a new idea, to globally distributed organizations with hundreds of people tackling the world's hardest problems. Unlike other chat apps, Zulip lets you read and respond to every message in context, no matter when it was sent. Maintain your focus and then catch up on your own time, reading the topics you care about, and skimming or skipping the rest. Like everything Zulip, this official Zulip mobile app is 100% open-source software: https://github.com/zulip/zulip-flutter . Thank you to the hundreds of contributors who have made Zulip what it is! Zulip is available as a managed cloud service or a self-hosted solution. Please send questions, comments, and bug reports to support@zulip.com, or tweet @zulip.
CERN Campus
This app serves as an all-in-one resource for the CERN community, simplifying campus life. It provides access to restaurant menus, a comprehensive phone directory, an interactive campus map, and the latest news and events. Users can also discover campus services, receive emergency notifications, and utilize an SOS button.
- Restaurant menus with photos and hours
- CERNphone directory and contact lookup
- Detailed interactive campus map
- Latest CERN news and event updates
- Campus service directory
- Emergency notifications and SOS button
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CERN Campus is the official all-in-one app for the CERN community. It is designed to make your life easier on the campus. • Restaurants daily menus with pictures, opening times and occupancy • Phonebook: find people, who a number belongs to, call on CERNphone • Map: find rooms, offices, and points of interests on the CERN detailed Campus Map • News: read about the latest research and events on the campus • Discover all the campus services, their contact details, and location • Get notified in the case of an emergency on the campus • SOS button to call CERN’s emergency number CERN Campus is brought to you by PocketCampus in collaboration with CERN.
Screenshots
Verdict
The clearest difference is rating: CERN Campus at 5.0 against Zulip's 3.7. CERN Campus also leads on monetization model (free vs free with in-app purchases) and review sentiment (50% vs 39%). Zulip's advantage is ratings volume (16 vs 3). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CERN Campus holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Zulip has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 39% of Zulip's written reviews are positive against 50% of CERN Campus's.
Zulip ships an update monthly, CERN Campus every 3 weeks. The most recent releases landed on October 16, 2026 and October 4, 2026 respectively.
| Parameter | Zulip | CERN Campus |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (16 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 39.3% of reviews | 50.0% of reviews — better |
| Number of ratings | 16 — better | 3 |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 44 MB | 35 MB |
| Age rating | 12+ | 4+ |
| Developer | Kandra Labs, Inc. | PocketCampus Sarl |
Customer experience
Zulip
CERN Campus
In-app purchases
Zulip
No in-app purchases
CERN Campus
No in-app purchases
