# SYGNAL vs Drill Deck

The clearest difference is device support: SYGNAL at 3 against Drill Deck's 1. SYGNAL also leads on iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. SYGNAL sells 1 in-app purchase, starting at $199.99 per month and Drill Deck sells 1 in-app purchase, starting at $19.99 per year. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | SYGNAL | Drill Deck |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | — |
| Size | 112 MB | 14 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Handheld Hazmat Inc.](https://appshunter.io/developer/1494471121) | [JEREMY MITER](https://appshunter.io/developer/1896505365) |

## What reviewers say

### SYGNAL

[App page](https://appshunter.io/ios/app/sygnal-gas-detector-training/id6482998390)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| premium | $199.99 | per month |


### Drill Deck

[App page](https://appshunter.io/ios/app/drill-deck/id6767743724)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Drill Deck Pro | $19.99 | per year |


## Frequently asked questions

### Is SYGNAL free?

SYGNAL is free to download, with in-app purchases available.

### Is Drill Deck free?

Drill Deck is free to download, with in-app purchases available.

### Do SYGNAL or Drill Deck have ads?

Neither SYGNAL nor Drill Deck shows ads.

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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.*