# Aviation Dictionary vs ADP

The clearest difference is review sentiment: Aviation Dictionary at 46% against ADP's 0%. Aviation Dictionary also leads on rating (3.2 vs 1.0) and ratings volume (25 vs 1). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Aviation Dictionary costs $9.99 and ADP $10.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Aviation Dictionary holds the better App Store score, 3.2 against 1.0. That said, the two scores are not equally well evidenced: Aviation Dictionary has 25 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 46% of Aviation Dictionary's written reviews are positive against 0% of ADP's.

Aviation Dictionary ships an update every 44 months, ADP every 39 months. The most recent releases landed on October 26, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Aviation Dictionary | ADP |
| --- | --- | --- |
| Price | **$9.99** | $10.99 |
| Rating | **[3.2 (25 ratings)](https://appshunter.io/ios/app/aviation-dictionary/id371699448/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/adp-aviation-dictionary-prem/id1408981639/reviews) |
| Number of ratings | **25** | 1 |
| Positive reviews | **45.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 44 months | **Every 39 months** |
| Monetization | Paid | Paid |
| Size | 23 MB | 70 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [ASA](https://appshunter.io/developer/334278379) | [Raj Kumar](https://appshunter.io/developer/1037581682) |

## What reviewers say

### Aviation Dictionary

[App page](https://appshunter.io/ios/app/aviation-dictionary/id371699448)

This comprehensive dictionary app provides definitions for over 12,000 aviation terms, acronyms, and phrases. It includes illustrations and is based on a trusted industry resource, making it ideal for anyone in the aviation field.

**Highlights:** 12,000+ aviation terms defined, Nearly 500 illustrations, Offline access, Powerful search function, Scrollable index, Word of the Day

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

**In-app purchases:** none


### ADP

[App page](https://appshunter.io/ios/app/adp-aviation-dictionary-prem/id1408981639)

This comprehensive aviation dictionary provides quick reference for pilots, technicians, and engineers. It defines over 16,500 terms, abbreviations, and phrases with illustrations, and works offline.

**Highlights:** Offline access, 16,500+ aviation terms, 700+ illustrations, Word/Abbreviation searching, Bookmarking, Text-to-speech pronunciation, Word of the Day

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Aviation Dictionary free?

Aviation Dictionary costs $9.99, with no in-app purchases.

### Is ADP free?

ADP costs $10.99, with no in-app purchases.

### Which has better reviews, Aviation Dictionary or ADP?

Aviation Dictionary is rated higher. Aviation Dictionary averages 3.2 out of 5 from 25 ratings, while ADP averages 1.0 from 1 ratings.

### Do Aviation Dictionary or ADP have ads?

Neither Aviation Dictionary nor ADP shows ads.

### Which is updated more often, Aviation Dictionary or ADP?

Aviation Dictionary ships an update every 44 months, and ADP every 39 months. Most recently, Aviation Dictionary was updated on October 26, 2026 and ADP on October 21, 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.*