# NRRS vs AFI Explorer

The clearest difference is price: NRRS at Free against AFI Explorer's $4.99. NRRS also leads on iOS requirement (17.6 vs 26.0). AFI Explorer's advantage is update cadence (every 2 weeks vs every 16 months) and chart position (#18 vs unranked). On ads, in-app purchases and device support there is nothing between them.

NRRS is free to download; AFI Explorer costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

NRRS ships an update every 16 months, AFI Explorer every 2 weeks. The most recent releases landed on May 16, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | NRRS | AFI Explorer |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | — | **[4.8 (241 ratings)](https://appshunter.io/ios/app/afi-explorer/id1564964107/reviews)** |
| Number of ratings | — | **241** |
| Positive reviews | — | 59.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 2 weeks** |
| Monetization | — | Free |
| Best chart rank | — | **#18** |
| Size | 3 MB | 7 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Answers4Families](https://appshunter.io/developer/530164780) | [William Walker](https://appshunter.io/developer/1492951703) |

## What reviewers say

### NRRS

[App page](https://appshunter.io/ios/app/nrrs/id1490934580)

**Features:** macOS Compatibility

**In-app purchases:** none


### AFI Explorer

[App page](https://appshunter.io/ios/app/afi-explorer/id1564964107)

**Currently charting:** #18 Top Paid · Reference (US App Store)

Access and search Air Force publications on your Apple devices. Get AI-powered answers, save favorites, and always have the latest versions of documents. Designed for Air Force personnel.

**Highlights:** AI-powered answers, Comprehensive publication library, Smart search functionality, Personal favorites sync, Automatic synchronization, Modern iOS/macOS design

**In-app purchases:** none


## Frequently asked questions

### Is NRRS free?

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

### Is AFI Explorer free?

AFI Explorer costs $4.99, with no in-app purchases.

### Do NRRS or AFI Explorer have ads?

Neither NRRS nor AFI Explorer shows ads.

### Which is updated more often, NRRS or AFI Explorer?

NRRS ships an update every 16 months, and AFI Explorer every 2 weeks. Most recently, NRRS was updated on May 16, 2026 and AFI Explorer on September 25, 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.*