# MTCSI Directory App vs Quantum Mobile

The clearest difference is update cadence: MTCSI Directory App at monthly against Quantum Mobile's every 5 months. Quantum Mobile's advantage is iOS requirement (11.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

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

MTCSI Directory App ships an update monthly, Quantum Mobile every 5 months. The most recent releases landed on September 12, 2026 and March 3, 2026 respectively.

## The numbers

| Metric | MTCSI Directory App | Quantum Mobile |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Size | 30 MB | 51 MB |
| Requires iOS | 16.6 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Marthoma](https://appshunter.io/developer/1639657996) | [CAMP Systems International Inc.](https://appshunter.io/developer/542306740) |

## What reviewers say

### MTCSI Directory App

[App page](https://appshunter.io/ios/app/mtcsi-directory-app/id6444175828)

**Features:** macOS Compatibility

**In-app purchases:** none


### Quantum Mobile

[App page](https://appshunter.io/ios/app/quantum-mobile/id6446109831)

**In-app purchases:** none


## Frequently asked questions

### Is MTCSI Directory App free?

MTCSI Directory App is free to download, with no in-app purchases.

### Is Quantum Mobile free?

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

### Do MTCSI Directory App or Quantum Mobile have ads?

Neither MTCSI Directory App nor Quantum Mobile shows ads.

### Which is updated more often, MTCSI Directory App or Quantum Mobile?

MTCSI Directory App ships an update monthly, and Quantum Mobile every 5 months. Most recently, MTCSI Directory App was updated on September 12, 2026 and Quantum Mobile on March 3, 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.*