# Extended Rest Operations vs ACN/PCN Calculator

The clearest difference is price: ACN/PCN Calculator at Free against Extended Rest Operations's $2.99. Extended Rest Operations's advantage is in-app purchases (none vs 26) and review sentiment (74% vs 45%). On rating, ratings volume, update cadence and ads there is nothing between them.

ACN/PCN Calculator is free to download; Extended Rest Operations costs $2.99 up front. ACN/PCN Calculator sells 26 one-off in-app purchases. Extended Rest Operations asks for nothing beyond the download.

ACN/PCN Calculator holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 66 and 144 respectively. Written reviews complicate that: 74% of Extended Rest Operations's written reviews are positive against 45% of ACN/PCN Calculator's, so the app with the better star average is not the one people write more warmly about.

Extended Rest Operations ships an update every 6 weeks, ACN/PCN Calculator every 2 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Extended Rest Operations | ACN/PCN Calculator |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.4 (66 ratings)](https://appshunter.io/ios/app/extended-rest-operations/id619262446/reviews) | **[4.6 (144 ratings)](https://appshunter.io/ios/app/acnpcn-calculator/id1049063069/reviews)** |
| Number of ratings | 66 | **144** |
| Positive reviews | **73.9% of reviews** | 45.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#171** | — |
| Size | 33 MB | 4 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Santiago Borja Lopez](https://appshunter.io/developer/581569234) | [AeroKitPro LLC](https://appshunter.io/developer/1049063068) |

## What reviewers say

### Extended Rest Operations

[App page](https://appshunter.io/ios/app/extended-rest-operations/id619262446)

**Currently charting:** #171 Top Paid · Utilities (US App Store)

Easily calculate inflight rest periods for long-haul flights. Features multiple rest distribution options and flight data input methods. Includes a round-up feature for clear schedules and optional alarms for crew changes.

**Highlights:** Calculate inflight rest periods, Over 10 rest distributions, Multiple flight data input methods, Round-up feature for schedules, Wake-up alarms for crew changes

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

**In-app purchases:** none


### ACN/PCN Calculator

[App page](https://appshunter.io/ios/app/acnpcn-calculator/id1049063069)

This app calculates aircraft pavement classification numbers (PCN) and aircraft classification numbers (ACN) to assess airport pavement strength. It helps pilots and aviation professionals ensure safe operations by verifying aircraft weight limitations on runways, taxiways, and aprons.

**Highlights:** ACN/PCN calculation, Pavement strength evaluation, Aircraft weight verification, ICAO ACN/PCN method, Comprehensive aircraft database, User-friendly interface

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

**In-app purchases (26)**

| Purchase | Price | Billing |
| --- | --- | --- |
| G600 (41.7t) | Free | one-time |
| B737 BBJ (77.7t) | $4.99 | one-time |
| G650 (45.3t) | $4.99 | one-time |
| Global 5000 (42.0t) | $4.99 | one-time |
| Global 5000 GVFD (42.0t) | $4.99 | one-time |
| Global 6000 (45.2t) | $4.99 | one-time |
| Global Express (44.5t) | $4.99 | one-time |
| G650ER (47.1t) | $4.99 | one-time |
| G650ER (45.3t) | $4.99 | one-time |
| G650ER (45.1t) | $4.99 | one-time |
| G550 (41.4t) | $4.99 | one-time |
| G450 (33.7t) | $4.99 | one-time |
| G280 (18.0t) | $4.99 | one-time |
| GIV-SP (34.0) | $4.99 | one-time |
| CL300 (17.69t) | $4.99 | one-time |
| Global 7500 (52.2t) | $4.99 | one-time |
| GVII-G600 (43.09t) | $4.99 | one-time |
| Citation XLS+ (9.25t) | $4.99 | one-time |
| GV (41.2t) | $4.99 | one-time |
| FALCON 2000EX (19.27t) | $4.99 | one-time |
| Global 6000 (44.5t) | $4.99 | one-time |
| G700 (48.9t) | $4.99 | one-time |
| GVII-G500 (36.28t) | $4.99 | one-time |
| Global Express (45.2t) | $4.99 | one-time |
| G450 (34.0t) | $4.99 | one-time |
| Global Express XRS (45.2t) | $4.99 | one-time |


## Frequently asked questions

### Is Extended Rest Operations free?

Extended Rest Operations costs $2.99, with no in-app purchases.

### Is ACN/PCN Calculator free?

ACN/PCN Calculator is free to download, with in-app purchases available.

### Which has better reviews, Extended Rest Operations or ACN/PCN Calculator?

ACN/PCN Calculator is rated higher. Extended Rest Operations averages 4.4 out of 5 from 66 ratings, while ACN/PCN Calculator averages 4.6 from 144 ratings.

### Do Extended Rest Operations or ACN/PCN Calculator have ads?

Neither Extended Rest Operations nor ACN/PCN Calculator shows ads.

### Which is updated more often, Extended Rest Operations or ACN/PCN Calculator?

Extended Rest Operations ships an update every 6 weeks, and ACN/PCN Calculator every 2 months. Most recently, Extended Rest Operations was updated on October 26, 2026 and ACN/PCN Calculator on October 24, 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.*