# ICS vs Signal Deck

The clearest difference is price: Signal Deck at Free against ICS's $2.99. Signal Deck also leads on update cadence (every 2 weeks vs every 9 months) and device support (3 vs 1). ICS's advantage is in-app purchases (none vs 1) and ads (none vs shown).

Signal Deck is free to download; ICS costs $2.99 up front. Signal Deck sells 1 one-off in-app purchase. ICS asks for nothing beyond the download.

ICS ships an update every 9 months, Signal Deck every 2 weeks. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | ICS | Signal Deck |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 2 weeks** |
| Size | 3 MB | 54 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Smirnov Yury](https://appshunter.io/developer/420438416) | [Ernest Jessop](https://appshunter.io/developer/1883136323) |

## What reviewers say

### ICS

[App page](https://appshunter.io/ios/app/ics-signal-flags-and-morse-code/id6745889978)

**Features:** macOS Compatibility

**In-app purchases:** none


### Signal Deck

[App page](https://appshunter.io/ios/app/signal-deck-ics-flag-trainer/id6760197679)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Signal Deck Pro | $0.99 | one-time |


## Frequently asked questions

### Is ICS free?

ICS costs $2.99, with no in-app purchases.

### Is Signal Deck free?

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

### Do ICS or Signal Deck have ads?

Signal Deck shows ads; ICS does not.

### Which is updated more often, ICS or Signal Deck?

ICS ships an update every 9 months, and Signal Deck every 2 weeks. Most recently, ICS was updated on November 8, 2026 and Signal Deck on November 5, 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.*