# Propagation Tools vs DitDah Decoder

The clearest difference is price: Propagation Tools at $0.29 against DitDah Decoder's $19.99. DitDah Decoder's advantage is update cadence (monthly vs every 9 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Propagation Tools costs $0.29 and DitDah Decoder $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Propagation Tools ships an update every 9 months, DitDah Decoder monthly. The most recent releases landed on October 8, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Propagation Tools | DitDah Decoder |
| --- | --- | --- |
| Price | **$0.29** | $19.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Monthly** |
| Size | 1 MB | 29 MB |
| Requires iOS | **17.0** | 18.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jeff Curtis](https://appshunter.io/developer/358219019) | [Timothy Diehl](https://appshunter.io/developer/1859707586) |

## What reviewers say

### Propagation Tools

[App page](https://appshunter.io/ios/app/propagation-tools/id6446221936)

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

**In-app purchases:** none


### DitDah Decoder

[App page](https://appshunter.io/ios/app/ditdah-decoder-morse-code-cw/id6756274811)

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

**In-app purchases:** none


## Frequently asked questions

### Is Propagation Tools free?

Propagation Tools costs $0.29, with no in-app purchases.

### Is DitDah Decoder free?

DitDah Decoder costs $19.99, with no in-app purchases.

### Do Propagation Tools or DitDah Decoder have ads?

Neither Propagation Tools nor DitDah Decoder shows ads.

### Which is updated more often, Propagation Tools or DitDah Decoder?

Propagation Tools ships an update every 9 months, and DitDah Decoder monthly. Most recently, Propagation Tools was updated on October 8, 2026 and DitDah Decoder on October 2, 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.*