# TeleSec OneTimePass vs ProCall Mobile

The clearest difference is update cadence: ProCall Mobile at monthly against TeleSec OneTimePass's every 10 months. TeleSec OneTimePass's advantage is device support (4 vs 2) and iOS requirement (13.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

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

TeleSec OneTimePass ships an update every 10 months, ProCall Mobile monthly. The most recent releases landed on September 18, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | TeleSec OneTimePass | ProCall Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 13.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Monthly** |
| Monetization | — | Free |
| Size | 3 MB | 84 MB |
| Requires iOS | **13.1** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [T-Systems](https://appshunter.io/developer/452199075) | [ESTOS GmbH](https://appshunter.io/developer/524662449) |

## What reviewers say

### TeleSec OneTimePass

[App page](https://appshunter.io/ios/app/telesec-onetimepass/id452199072)

**In-app purchases:** none


### ProCall Mobile

[App page](https://appshunter.io/ios/app/procall-mobile/id1049341023)

This business communication app provides unified communications and CTI functions for mobile devices. Access office phone features, business contacts, and colleague availability on the go. Includes chat, video calls, and CRM/ERP integration for efficient communication.

**Highlights:** Use office phone on the move, Access business contacts and communication functions, Chat for secure message exchange, Video chat, CRM/ERP software integration, Instant messaging and presence management

**Features:** Siri integration

**In-app purchases:** none


## Frequently asked questions

### Is TeleSec OneTimePass free?

TeleSec OneTimePass is free to download, with no in-app purchases.

### Is ProCall Mobile free?

ProCall Mobile is free to download, with no in-app purchases.

### Do TeleSec OneTimePass or ProCall Mobile have ads?

Neither TeleSec OneTimePass nor ProCall Mobile shows ads.

### Which is updated more often, TeleSec OneTimePass or ProCall Mobile?

TeleSec OneTimePass ships an update every 10 months, and ProCall Mobile monthly. Most recently, TeleSec OneTimePass was updated on September 18, 2026 and ProCall Mobile on September 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*