# Acronyms and Abbreviations vs Rizzference

The clearest difference is ads: Rizzference at none against Acronyms and Abbreviations's shown. Rizzference also leads on rating (5.0 vs 4.6) and update cadence (every 3 months vs every 17 months). Acronyms and Abbreviations's advantage is ratings volume (307 vs 3) and device support (3 vs 1). On price, in-app purchases and monetization model there is nothing between them.

Both are free to download. Acronyms and Abbreviations sells 1 one-off in-app purchase and Rizzference sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Rizzference holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Acronyms and Abbreviations has 307 ratings behind it against 3, so its average is the more settled of the two.

Acronyms and Abbreviations ships an update every 17 months, Rizzference every 3 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Acronyms and Abbreviations | Rizzference |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (307 ratings)](https://appshunter.io/ios/app/acronyms-and-abbreviations/id1032748686/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/rizzference/id6474303013/reviews)** |
| Number of ratings | **307** | 3 |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 17 months | **Every 3 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 39 MB | 2 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Farlex, Inc.](https://appshunter.io/developer/379450386) | [David Bures](https://appshunter.io/developer/1649236052) |

## What reviewers say

### Acronyms and Abbreviations

[App page](https://appshunter.io/ios/app/acronyms-and-abbreviations/id1032748686)

Access definitions for over 1 million acronyms and abbreviations across various fields, including medicine, military, IT, and slang. This comprehensive dictionary offers offline access, search suggestions, and the ability to save favorites.

**Highlights:** 1 million+ offline acronyms, Search suggestions, Unlimited bookmarks, Recent searches, Adjustable font size, Share definitions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-free upgrade | $4.99 | one-time |

**What reviewers like**

- 👍 Practical and useful dictionary
- 👍 Comprehensive and seamless search
- 👍 Keeps users updated with modern language
- 👍 High collection of must-haves
- 👍 Straightforward and easy to use

**What reviewers complain about**

- 🐛 Application closes immediately after opening
- 🐛 Cannot add own acronyms
- 🐛 Annoying ad system
- 🐛 Not very flexible search (word to abbr)
- 🐛 Installation issues for some

**Reported bugs**

- Application closes immediately after opening (iOS 15.4)
- Crashes at launch on multiple devices

**Requested features**

- Ability to search for abbreviations for a given word
- Implement a less intrusive ad system


### Rizzference

[App page](https://appshunter.io/ios/app/rizzference/id6474303013)

Understand modern slang and internet lingo with a comprehensive and up-to-date dictionary. Define entire sentences, discover new words daily, and customize your experience to stay current with online and real-life communication.

**Highlights:** Comprehensive slang dictionary, Up-to-date definitions, Define whole sentences, Learn new words daily, Customizable experience

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Definitions | $3.99 | one-time |


## Frequently asked questions

### Is Acronyms and Abbreviations free?

Acronyms and Abbreviations is free to download, with in-app purchases available.

### Is Rizzference free?

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

### Which has better reviews, Acronyms and Abbreviations or Rizzference?

Rizzference is rated higher. Acronyms and Abbreviations averages 4.6 out of 5 from 307 ratings, while Rizzference averages 5.0 from 3 ratings.

### Do Acronyms and Abbreviations or Rizzference have ads?

Acronyms and Abbreviations shows ads; Rizzference does not.

### Which is updated more often, Acronyms and Abbreviations or Rizzference?

Acronyms and Abbreviations ships an update every 17 months, and Rizzference every 3 months. Most recently, Acronyms and Abbreviations was updated on October 21, 2026 and Rizzference 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.*