reData Mobile vs C21 One21
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
reData Mobile
Access real-time MLS data, property listings, and essential search tools on your mobile device. Stay informed about active, pending, sold, and historical listings with comprehensive details and photos. Ideal for home buyers, sellers, and real estate professionals.
- Real-time MLS listing data access
- Search active, pending, sold, and historical listings
- Comprehensive property details and photos
- Save searches and view recent activity
- GPS-based nearby listing locator
- Property information for showings
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reData Mobile gives home buyers, sellers, and real estate professionals fast, secure access to MLS data, listings, and essential property search tools right from your mobile device. Powered by the reData MLS platform, the app helps everyone from everyday home shoppers to agents and brokers stay informed and productive, whether you're browsing listings from your couch or showing properties in the field. Key Features • Access real-time MLS listing data • Search active, pending, sold, and historical listings • View comprehensive property details, photos, and documents • Save searches and quickly access recent activity • Locate nearby listings using your device's GPS • Review property information while showing homes • Stay connected to your local market from anywhere reData Mobile connects to participating MLS organizations on the reData MLS platform. Some features may require sign-in with credentials provided by a participating MLS. Participating MLSs New Mexico Multiple Listing Service (NMMLS)
C21 One21
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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.
Screenshots
Verdict
The clearest difference is update cadence: reData Mobile at every 2 weeks against C21 One21's every 3 months. On price, ads, in-app purchases and device support 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.
reData Mobile ships an update every 2 weeks, C21 One21 every 3 months. Both last shipped on October 31, 2026.
| Parameter | reData Mobile | C21 One21 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 60 MB | 69 MB |
| Age rating | 4+ | 4+ |
| Developer | REAL ESTATE DATA TECHNOLOGIES, LLC | Century 21 Real Estate, LLC |
In-app purchases
reData Mobile
No in-app purchases
C21 One21
No in-app purchases
Questions
Is reData Mobile free?
Is C21 One21 free?
Do reData Mobile or C21 One21 have ads?
Which is updated more often, reData Mobile or C21 One21?
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