Comparison

C21Events vs C21 One21

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

C21Events

Features
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Welcome to Content Events, the app designed to enhance your event experience of C21โ€™s Content-branded events. Connect with other attendees through our messaging system, enabling you to network, set up meetings, or chat with delegates, speakers, and organizers. Stay informed with our detailed event agenda, where you can view session times, speaker information, and descriptions. Customize your schedule by adding sessions to your personal calendar. Experience the event in real-time with live streaming, allowing you to watch sessions as they happen and participate in live polls and Q&A sessions. Navigate the app with ease thanks to its intuitive design, and tailor your event journey with customisable features. Access event content on-demand to catch up or review sessions at your own pace. Content Events provides all the tools you need to make the most of your event experience. Download now and transform the way you experience events!

About

C21 One21

Features
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Century 21 One21 2026 Welcome to the official event app for One21 โ€” your all-access pass to the ultimate C21 experience! Designed exclusively for registered attendees, this app puts everything you need for the event right at your fingertips. Plan Your Experience Explore the full event schedule, customize your agenda, and stay up to date with real-time updates. Navigate with Ease Maps help you find your way around the venue, sessions, and key locations. Update your profile and connect with other attendees and start networking before you even arrive on-site! Note: This app is intended for registered One21 attendees only.

Screenshots

C21Events3 screens
C21 One214 screens

Verdict

The call

C21Events and C21 One21 are too close to call on the numbers: across 6 compared parameters โ€” price, update cadence, ads and in-app purchases among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

ScorecardNo meaningful differences
C21Events versus C21 One21: the parameters behind the verdict, then further details
ParameterC21EventsC21 One21
PriceFreeFree
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details โ€” not scored
Size60 MB69 MB
Age rating12+4+
DeveloperC21screenCentury 21 Real Estate, LLC

In-app purchases

None

C21Events

No in-app purchases

None

C21 One21

No in-app purchases

Questions

Is C21Events free?
C21Events is free to download, with no in-app purchases.
Is C21 One21 free?
C21 One21 is free to download, with no in-app purchases.
Do C21Events or C21 One21 have ads?
Neither C21Events nor C21 One21 shows ads.
Which is updated more often, C21Events or C21 One21?
C21Events ships an update every 3 months, and C21 One21 every 3 months. Most recently, C21Events was updated on October 24, 2026 and C21 One21 on October 25, 2026.

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