# PECO Modellers' Library vs Responder Plus

The clearest difference is monetization model: PECO Modellers' Library at free with in-app purchases against Responder Plus's subscription. PECO Modellers' Library also leads on iOS requirement (11.2 vs 15.6). Responder Plus's advantage is review sentiment (50% vs 15%) and update cadence (every 4 months vs every 15 months). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PECO Modellers' Library sells 10 one-off in-app purchases and Responder Plus sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

PECO Modellers' Library ships an update every 15 months, Responder Plus every 4 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | PECO Modellers' Library | Responder Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (12 ratings)](https://appshunter.io/ios/app/peco-modellers-library/id1070154983/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 15.4% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 4 months** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 37 MB | 206 MB |
| Requires iOS | **11.2** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Pritchard Patent Product Co. Ltd.](https://appshunter.io/developer/1460257095) | [Class Publishing Ltd](https://appshunter.io/developer/884962940) |

## What reviewers say

### PECO Modellers' Library

[App page](https://appshunter.io/ios/app/peco-modellers-library/id1070154983)

This app provides a digital library of model railway publications for enthusiasts of all levels. Explore advice, inspiration, and detailed guides to enhance your hobby. Purchase individual issues or subscribe for ongoing access.

**Highlights:** Model railway publications, Advice for beginners, Inspiration for experienced modelers, Purchase individual issues, Subscription options, Cross-platform access with account login

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Setrack N Gauge... (id:472332) | $1.99 | one-time |
| Track Plans for... (id:472341) | $1.99 | one-time |
| 60 Plans For Sm... (id:472340) | $1.99 | one-time |
| N Gauge Track P... (id:472333) | $1.99 | one-time |
| PECO SETRACK N ... (id:492974) | $1.99 | one-time |
| OO Setrack Plan... (id:472334) | $2.99 | one-time |
| PM-202 A Compen... (id:472330) | $3.99 | one-time |
| do not use (id:769268) | $4.99 | one-time |
| PM-200 Your Gui... (id:769277) | $4.99 | one-time |
| PM-204 Your Gui... (id:769274) | $4.99 | one-time |


### Responder Plus

[App page](https://appshunter.io/ios/app/responder-plus/id1476062771)

This app offers essential reference materials and reassurance for individuals in life-saving roles. It provides access to medical emergency protocols, trauma care, and clinical skills, with offline functionality after initial login. Users can also adapt the app with custom resources.

**Highlights:** Medical emergency protocols, Trauma care guidelines, Clinical skills guides, Anatomical diagrams, Offline access, Customizable resources

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month RP subscription | $1.99 | per month |
| 12 month RP subscription | $20.49 | per year |


## Frequently asked questions

### Is PECO Modellers' Library free?

PECO Modellers' Library is free to download, with in-app purchases available.

### Is Responder Plus free?

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

### Do PECO Modellers' Library or Responder Plus have ads?

Neither PECO Modellers' Library nor Responder Plus shows ads.

### Which is updated more often, PECO Modellers' Library or Responder Plus?

PECO Modellers' Library ships an update every 15 months, and Responder Plus every 4 months. Most recently, PECO Modellers' Library was updated on November 2, 2026 and Responder Plus on November 3, 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.*