# Idioms and Slang Dictionary vs Resistor Reader

The clearest difference is price: Idioms and Slang Dictionary at Free against Resistor Reader's $0.99. Idioms and Slang Dictionary also leads on ratings volume (1.1K vs 1). Resistor Reader's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence and device support there is nothing between them.

Idioms and Slang Dictionary is free to download; Resistor Reader costs $0.99 up front. Idioms and Slang Dictionary sells 1 one-off in-app purchase. Resistor Reader asks for nothing beyond the download.

Resistor Reader holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Idioms and Slang Dictionary has 1.1K ratings behind it against 1, so its average is the more settled of the two.

Idioms and Slang Dictionary ships an update every 17 months, Resistor Reader every 11 months. The most recent releases landed on October 26, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Idioms and Slang Dictionary | Resistor Reader |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.7 (1.1K ratings)](https://appshunter.io/ios/app/idioms-and-slang-dictionary/id1024598358/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/resistor-reader/id1535269566/reviews)** |
| Number of ratings | **1.1K** | 1 |
| Positive reviews | 82.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 17 months | **Every 11 months** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 96 MB | 1 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 12+ | 4+ |
| Developer | [Farlex, Inc.](https://appshunter.io/developer/379450386) | [JONOTHON CONE](https://appshunter.io/developer/1493556554) |

## What reviewers say

### Idioms and Slang Dictionary

[App page](https://appshunter.io/ios/app/idioms-and-slang-dictionary/id1024598358)

Explore the meanings and origins of over 61,000 idioms, slang terms, proverbs, and expressions. Understand conversational English like a native speaker with definitions, historical context, and example sentences.

**Highlights:** Definitions from top sources, History and origin of phrases, Example sentences, Voice search, Audio pronunciations, Bookmark favorite phrases, Advanced search options

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

**In-app purchases (1)**

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

**What reviewers like**

- 👍 Simple design, easy to use
- 🚀 Accurate results
- 👍 Useful for understanding idioms
- 👍 Helpful for non-native English speakers
- 👍 Great resource for teaching and learning English

**What reviewers complain about**

- 🐛 Impossible to read text due to background issues
- 🐛 Ads still show up despite paid subscription
- 🔧 Needs more advanced features like translations, audio, and contextual information
- 🔧 User experience could be improved, such as better navigation

**Reported bugs**

- Offline mode issues causing the app to go offline frequently
- Bookmarks/favorites not saving properly across device resets

**Requested features**

- Provide translations of idiom definitions in other languages
- Add audio functionality to help with pronunciation
- Improve navigation and browsing experience
- Sync favorites across devices
- Categorize and list commonly used idioms and slang


### Resistor Reader

[App page](https://appshunter.io/ios/app/resistor-reader/id1535269566)

Easily determine resistor values directly from your wrist. Select color bands using the Digital Crown for quick identification. Requires Watch OS 9.0 or higher.

**Highlights:** Identify resistor values, Digital Crown selection, Color band input, Watch-based utility

**In-app purchases:** none


## Frequently asked questions

### Is Idioms and Slang Dictionary free?

Idioms and Slang Dictionary is free to download, with in-app purchases available.

### Is Resistor Reader free?

Resistor Reader costs $0.99, with no in-app purchases.

### Which has better reviews, Idioms and Slang Dictionary or Resistor Reader?

Resistor Reader is rated higher. Idioms and Slang Dictionary averages 4.7 out of 5 from 1.1K ratings, while Resistor Reader averages 5.0 from 1 ratings.

### Do Idioms and Slang Dictionary or Resistor Reader have ads?

Idioms and Slang Dictionary shows ads; Resistor Reader does not.

### Which is updated more often, Idioms and Slang Dictionary or Resistor Reader?

Idioms and Slang Dictionary ships an update every 17 months, and Resistor Reader every 11 months. Most recently, Idioms and Slang Dictionary was updated on October 26, 2026 and Resistor Reader on October 3, 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.*