Zulip vs CERN Campus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zulip
This team chat application allows users to read and respond to messages within their original context, helping maintain focus. It supports teams of all sizes, from small groups to large organizations, and is 100% open-source.
- Contextual message reading and responding
- Topic-based organization
- Focus maintenance
- Supports teams of all sizes
- 100% open-source
- Cloud or 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 official community app simplifies life on campus with features like restaurant menus, a comprehensive phonebook, and an interactive map. Stay informed with campus news, discover services, and receive emergency notifications.
- Restaurant menus with pictures and opening times
- CERNphone directory and contact search
- Detailed campus map with points of interest
- Latest campus news and events
- 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 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 November 6, 2026 and November 3, 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 | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 41 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
