# IRPCS vs Day Skipper Theory Prep

The clearest difference is ads: Day Skipper Theory Prep at none against IRPCS's shown. IRPCS's advantage is update cadence (every 3 days vs every 2 months) and iOS requirement (15.1 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. IRPCS sells 2 in-app purchases, starting at $4.99 per month and Day Skipper Theory Prep sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

IRPCS ships an update every 3 days, Day Skipper Theory Prep every 2 months. The most recent releases landed on October 25, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | IRPCS | Day Skipper Theory Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 2 months |
| Size | 73 MB | 3 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Paul Whittle](https://appshunter.io/developer/1076749256) | [MD Shahariar Nazim Joy](https://appshunter.io/developer/1893961943) |

## What reviewers say

### IRPCS

[App page](https://appshunter.io/ios/app/irpcs/id6762519800)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IRPCS Pro 1 month | $4.99 | per month |
| IRPCS Pro | $29.99 | per year |


### Day Skipper Theory Prep

[App page](https://appshunter.io/ios/app/day-skipper-theory-prep/id6793379929)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $4.99 | per month |
| Yearly Premium | $14.99 | per year |
| Lifetime Access | $24.99 | one-time |


## Frequently asked questions

### Is IRPCS free?

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

### Is Day Skipper Theory Prep free?

Day Skipper Theory Prep is free to download, with in-app purchases available.

### Do IRPCS or Day Skipper Theory Prep have ads?

IRPCS shows ads; Day Skipper Theory Prep does not.

### Which is updated more often, IRPCS or Day Skipper Theory Prep?

IRPCS ships an update every 3 days, and Day Skipper Theory Prep every 2 months. Most recently, IRPCS was updated on October 25, 2026 and Day Skipper Theory Prep on October 16, 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.*