# FAR/AIM by ASA vs Gammon API Gravity Calculator

The clearest difference is price: Gammon API Gravity Calculator at $9.99 against FAR/AIM by ASA's $19.95. Gammon API Gravity Calculator also leads on rating (3.6 vs 3.4) and review sentiment (50% vs 33%). FAR/AIM by ASA's advantage is ratings volume (253 vs 10) and chart position (#4 vs #82). On ads, in-app purchases and device support there is nothing between them.

FAR/AIM by ASA costs $19.95 and Gammon API Gravity Calculator $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Gammon API Gravity Calculator holds the better App Store score, 3.6 against 3.4. That said, the two scores are not equally well evidenced: FAR/AIM by ASA has 253 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 33% of FAR/AIM by ASA's written reviews are positive against 50% of Gammon API Gravity Calculator's.

## The numbers

| Metric | FAR/AIM by ASA | Gammon API Gravity Calculator |
| --- | --- | --- |
| Price | $19.95 | **$9.99** |
| Rating | [3.4 (253 ratings)](https://appshunter.io/ios/app/faraim-by-asa/id361784690/reviews) | **[3.6 (10 ratings)](https://appshunter.io/ios/app/gammon-api-gravity-calculator/id1163782117/reviews)** |
| Number of ratings | **253** | 10 |
| Positive reviews | 33.1% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Monetization | **Free** | Paid |
| Best chart rank | **#4** | #82 |
| Size | 47 MB | 10 MB |
| Requires iOS | 13.0 | **8.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ASA](https://appshunter.io/developer/334278379) | [Gammon Technical Products](https://appshunter.io/developer/1163782116) |

## What reviewers say

### FAR/AIM by ASA

[App page](https://appshunter.io/ios/app/faraim-by-asa/id361784690)

**Currently charting:** #4 Top Paid · Reference, #108 Top Paid, #182 Top Grossing · Reference (US App Store)

Access comprehensive aviation regulations and information, including the FAR, AIM, and Pilot/Controller Glossary. Features include free updates, text search, study by certificate, and customizable reading options. Stay current with daily FAA changes.

**Highlights:** Free updates, Complete FAR/AIM content, Study by certificate, Text search functionality, Customizable reading options, Highlight and bookmark text

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

**In-app purchases:** none

**What reviewers like**

- 📱 Convenient offline access to FAR/AIM
- 💰 One-time purchase with free lifetime updates
- 🔍 Search functionality available
- ⭐ Well-organized content structure
- 🎯 Study by Certificate feature

**What reviewers complain about**

- 🔍 Search function is poorly designed and unreliable
- 🔄 No cross-device synchronization of highlights/bookmarks
- 🐛 Highlights disappear or move randomly after updates
- 🌙 No dark mode for text content (only menus)
- 📝 Cannot add notes or annotations

**Reported bugs**

- Search function returns too many irrelevant results or zero results
- Highlights disappear after app updates
- Highlights move randomly within text
- App resets to home screen when switching apps
- Bookmarks show blank pages

**Requested features**

- Cloud sync for highlights and bookmarks across devices
- Note-taking and annotation capabilities
- Multiple highlight colors
- Dark mode for text content
- Adjustable font size slider


### Gammon API Gravity Calculator

[App page](https://appshunter.io/ios/app/gammon-api-gravity-calculator/id1163782117)

**Currently charting:** #82 Top Paid · Reference (US App Store)

Calculate corrected API gravity for jet, gasoline, and diesel fuels at 60°F. This digital tool also determines the total weight of the fuel, replicating the functionality of physical slide calculators.

**Highlights:** Corrected API gravity calculation, Fuel weight calculation, Supports jet, gasoline, and diesel fuels, Digital slide calculator replacement, Accurate at 60°F

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

**In-app purchases:** none


## Frequently asked questions

### Is FAR/AIM by ASA free?

FAR/AIM by ASA costs $19.95, with no in-app purchases.

### Is Gammon API Gravity Calculator free?

Gammon API Gravity Calculator costs $9.99, with no in-app purchases.

### Which has better reviews, FAR/AIM by ASA or Gammon API Gravity Calculator?

Gammon API Gravity Calculator is rated higher. FAR/AIM by ASA averages 3.4 out of 5 from 253 ratings, while Gammon API Gravity Calculator averages 3.6 from 10 ratings.

### Do FAR/AIM by ASA or Gammon API Gravity Calculator have ads?

Neither FAR/AIM by ASA nor Gammon API Gravity Calculator shows ads.

### Which is more popular, FAR/AIM by ASA or Gammon API Gravity Calculator?

FAR/AIM by ASA currently peaks at #4 in the App Store charts, and Gammon API Gravity Calculator at #82. Chart position reflects recent download velocity rather than total install base.

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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.*