Casandra vs C21 App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Casandra
This platform helps administrators manage residential condominiums, private homes, office buildings, and shopping centers. It offers automated payment processing, financial control, invoicing, and communication tools for efficient property management.
- Automated payment processing
- Income and expense control
- Budget comparison
- Tax invoice issuance
- Common area reservation management
- Help desk for requests
- Communication tools
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Cassandra is the definitive technology platform to administer residential condominiums, private homes, office buildings and shopping centers. We are leaders in the market since the year 2006. The Cassandra platform is fully configurable and has abundant functionality for the professional administrator. Cassandra is connected to all banks in Mexico to receive, identify and process payments automatically. It also receives and processes credit and debit card payments (Visa and MasterCard). Control the income and expenses of the Condominium; Compare the expenses against the budget. Issue Tax Invoices (CFDI) as proof of payment of fees. Easily control the reservation of common areas. Manage condominiums requests through a help desk. With our communication tools, your condominiums will be timely informed of everything that happens in the condo. With Cassandra, professionally managing a condo is now an easy task. Join the professional community of real estate administrators now!
C21 App
Discover properties for sale or rent, and find real estate offices offering top services. Utilize advanced filters and map views to easily locate your ideal property.
- Find properties for sale
- Find properties for rent
- Locate real estate offices
- Advanced search filters
- Map-based property search
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¡En la App de Century 21 podrás encontrar la propiedad que estás buscando desde cualquier lugar! Encuentra alguna propiedad para comprar o alquilar así como oficinas en las que tendrás el mejor servicio inmobiliario. Contamos con diversos filtros para facilitar la búsqueda además de poder filtrar por mapa.
Screenshots
Verdict
The clearest difference is ads: Casandra at none against C21 App's shown. Casandra also leads on update cadence (every 4 days vs every 2 months) and rating (4.0 vs 3.7). C21 App's advantage is ratings volume (3 vs 1). On price, in-app purchases, device support and iOS requirement 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.
Casandra holds the better App Store score, 4.0 against 3.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
Casandra ships an update every 4 days, C21 App every 2 months. The most recent releases landed on September 19, 2026 and September 15, 2026 respectively.
| Parameter | Casandra | C21 App |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 20.0% of reviews | — |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 4 days — better | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 28 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Subvertis Cero Uno Cero S de RL de CV | Genioi |
Customer experience
Casandra
C21 App
In-app purchases
Casandra
No in-app purchases
C21 App
No in-app purchases
