C21 One21

Century 21 Real Estate, LLC Business iPhoneiPadiPod touch

C21 One21 is a free Business app for iPhone and iPad by Century 21 Real Estate, LLC. Requires iOS 17.0. Updated June 25, 2026.

Price: Free; on the App Store
Size: 69 MB; Age 4+
Updated: Jun 25; 2026 · v1.0.1

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About C21 One21

Century 21 One21 2026 Welcome to the official event app for One21 — 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.

What’s new

Version 1.0.1 · Updated June 25, 2026

Bug fixes and enhancements to improve the overall attendees' experience

App privacy

The developer, Century 21 Real Estate, LLC, reported these privacy practices to Apple.

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

Contact Info: Email Address, Name, Phone Number, Physical Address, Other User Contact Info
Identifiers: User ID
User Content: Photos or Videos

Used for: Product Personalization, App Functionality, Other Purposes

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

Usage Data: Product Interaction
User Content: Customer Support, Other User Content
Diagnostics: Crash Data, Performance Data, Other Diagnostic Data

Used for: Analytics, App Functionality, Other Purposes

App details

C21 One21 is a free Business app for iPhone, iPad and iPod touch, developed by Century 21 Real Estate, LLC. It requires iOS 17.0 or later, is 69 MB to download and is available in 29 languages. It was first released on March 26, 2026 and last updated on June 25, 2026.

Category: Business
Price: Free
Version: 1.0.1
Size: 69 MB
Requires: iOS 17.0 or later
Compatibility: iPhone, iPad, iPod touch
Languages: English, Bulgarian, Croatian, Czech, Danish, Dutch, Finnish, French and 21 more
Age rating: 4+
Released: March 26, 2026
Last updated: June 25, 2026
Developer: Century 21 Real Estate, LLC

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Listing score

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Grade C

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Alternatives to C21 One21

Looking for apps like C21 One21? Here are 6 similar apps on the App Store. The highest rated is RISE by MoxiWorks (5.0/5), and all 6 are free to download.

C21 One21 vs. alternatives
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