# DTT Service Area vs DSD

The clearest difference is review sentiment: DSD at 50% against DTT Service Area's 15%. DSD also leads on update cadence (every 3 weeks vs every 4 months) and iOS requirement (9.0 vs 14.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

DTT Service Area ships an update every 4 months, DSD every 3 weeks. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | DTT Service Area | DSD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/dtt-service-area/id906264193/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 15.4% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 158 MB | 37 MB |
| Requires iOS | 14.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Office of The National Broadcasting and Telecommunications Commission](https://appshunter.io/developer/721507053) | [Department of Skill Development](https://appshunter.io/developer/1194354847) |

## What reviewers say

### DTT Service Area

[App page](https://appshunter.io/ios/app/dtt-service-area/id906264193)

This app helps users find the best direction to receive digital terrestrial television signals. It uses signal propagation models and network provider data to calculate coverage areas. The information is an estimation and should be used with caution.

**Highlights:** Digital terrestrial TV signal coverage check, Signal reception direction finding, Uses signal propagation models, Incorporates network provider data, Considers topographical data

**Features:** macOS Compatibility

**In-app purchases:** none


### DSD

[App page](https://appshunter.io/ios/app/dsd/id1529223067)

Access government services, training course information, and skill development resources conveniently through a smartphone or tablet. This application provides direct access to public services, news, and contact information for relevant government departments.

**Highlights:** Training course information, Skill standard testing, Download certificates, Public relations news, Department location map, Frequently asked questions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DTT Service Area free?

DTT Service Area is free to download, with no in-app purchases.

### Is DSD free?

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

### Do DTT Service Area or DSD have ads?

Neither DTT Service Area nor DSD shows ads.

### Which is updated more often, DTT Service Area or DSD?

DTT Service Area ships an update every 4 months, and DSD every 3 weeks. Most recently, DTT Service Area was updated on October 20, 2026 and DSD on October 24, 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.*