# Deep Dictionary vs Liffer

The clearest difference is in-app purchases: Deep Dictionary at none against Liffer's 1. Liffer's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Liffer sells 1 one-off in-app purchase. Deep Dictionary asks for nothing beyond the download.

Deep Dictionary ships an update every 5 days, Liffer weekly. The most recent releases landed on September 27, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Deep Dictionary | Liffer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (51 ratings)](https://appshunter.io/ios/app/deep-dictionary/id6451319239/reviews)** | — |
| Number of ratings | **51** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | Ad-supported | — |
| Size | 13 MB | 201 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [DEEPCO](https://appshunter.io/developer/1697523614) | [Vaidotas Sackus](https://appshunter.io/developer/1856560595) |

## What reviewers say

### Deep Dictionary

[App page](https://appshunter.io/ios/app/deep-dictionary/id6451319239)

Access definitions from various sources like Wikipedia and Urban Dictionary, with multilingual support and pronunciation guides. Enhance your vocabulary with synonyms, related words, and real-life usage examples.

**Highlights:** Multilingual definitions, Urban Dictionary slang integration, Wikipedia content access, Pronunciation guides and usage examples, Comprehensive thesaurus, Images and contextual phrases

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

**In-app purchases:** none


### Liffer

[App page](https://appshunter.io/ios/app/liffer/id6766031070)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Liffer Pro — Lifetime | $17.99 | one-time |


## Frequently asked questions

### Is Deep Dictionary free?

Deep Dictionary is free to download, with no in-app purchases.

### Is Liffer free?

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

### Do Deep Dictionary or Liffer have ads?

Deep Dictionary shows ads; Liffer does not.

### Which is updated more often, Deep Dictionary or Liffer?

Deep Dictionary ships an update every 5 days, and Liffer weekly. Most recently, Deep Dictionary was updated on September 27, 2026 and Liffer on September 13, 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.*