OneCall by Unitel vs Call24
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OneCall by Unitel
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OneCall нь байгууллагийн дотуур холбооны цогц application.
Call24
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Call24 is a professional contact center mobile application designed specifically for the Mongolian market. This app provides contact center agents with comprehensive tools to manage customer interactions, support tickets, and sales activities. Key Features: • VoIP Calling - Make and receive calls directly through the app using SIP/VoIP technology • Real-time call handling with call recording and monitoring capabilities • Ticket management system for customer support • CRM integration for customer data access • Sales pipeline and deal tracking • Push notifications for instant updates • Offline mode support • Email communication tools IMPORTANT: This app uses VoIP (Voice over IP) technology for making and receiving calls. VoIP functionality requires a stable internet connection and proper SIP server configuration provided by your Call24 administrator. This app is exclusively designed for use in Mongolia and requires an active Call24 contact center account with proper credentials to access. Note: Login instructions are provided in the review notes section.
Screenshots
Verdict
The clearest difference is update cadence: Call24 at every 4 days against OneCall by Unitel's every 11 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.
OneCall by Unitel ships an update every 11 months, Call24 every 4 days. The most recent releases landed on August 13, 2026 and September 21, 2026 respectively.
| Parameter | OneCall by Unitel | Call24 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 11 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 85 MB | 122 MB |
| Age rating | 4+ | 4+ |
| Developer | Unitel Group | Boldbaatar Dagvadorj |
In-app purchases
OneCall by Unitel
No in-app purchases
Call24
No in-app purchases







