# Prayerbook for Catholics vs Light Signals

The clearest difference is ads: Prayerbook for Catholics at none against Light Signals's shown. Prayerbook for Catholics also leads on device support (4 vs 2). Light Signals's advantage is update cadence (weekly vs every 2 months). On price, in-app purchases and iOS requirement there is nothing between them.

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

Prayerbook for Catholics ships an update every 2 months, Light Signals weekly. The most recent releases landed on October 3, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Prayerbook for Catholics | Light Signals |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Weekly** |
| Size | 119 MB | 5 MB |
| Requires iOS | 27.0 | **26.1** |
| Devices | **iPhone, iPad, Apple Watch, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mateusz Zajac](https://appshunter.io/developer/1603708297) | [MIZOU, CO., LTD.](https://appshunter.io/developer/1542553141) |

## What reviewers say

### Prayerbook for Catholics

[App page](https://appshunter.io/ios/app/prayerbook-for-catholics/id1603708175)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### Light Signals

[App page](https://appshunter.io/ios/app/light-signals-morse-code/id6756871661)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Prayerbook for Catholics free?

Prayerbook for Catholics is free to download, with no in-app purchases.

### Is Light Signals free?

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

### Do Prayerbook for Catholics or Light Signals have ads?

Light Signals shows ads; Prayerbook for Catholics does not.

### Which is updated more often, Prayerbook for Catholics or Light Signals?

Prayerbook for Catholics ships an update every 2 months, and Light Signals weekly. Most recently, Prayerbook for Catholics was updated on October 3, 2026 and Light Signals on October 6, 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.*