# Vocabulary Builder vs Deep In

Vocabulary Builder and Deep In are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Vocabulary Builder sells 2 in-app purchases, starting at $4.99 per 7 days and Deep In sells 7 in-app purchases, starting at $7.00 per month. Whichever you choose, the download price is not the number that matters.

Vocabulary Builder ships an update every 9 days, Deep In every 4 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Vocabulary Builder | Deep In |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/deep-in-language-immersion/id6784153530/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 4 days** |
| Monetization | — | Freemium |
| Size | 58 MB | 79 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [IEVHENII BONDARENKO](https://appshunter.io/developer/946734437) | [DEEP IN](https://appshunter.io/developer/6784153532) |

## What reviewers say

### Vocabulary Builder

[App page](https://appshunter.io/ios/app/vocabulary-builder-flashcards/id6780668352)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week | $4.99 | per 7 days |
| Yearly | $19.99 | per year |


### Deep In

[App page](https://appshunter.io/ios/app/deep-in-language-immersion/id6784153530)

Immerse yourself in a new language by watching real YouTube videos and analyzing spoken phrases. This app provides interactive subtitles and vocabulary review to help you understand and speak like a native. Explore content on any topic you love, at your own pace.

**Highlights:** Watch real YouTube videos, Interactive subtitles, Vocabulary review and flashcards, Practice speaking with AI, Personalized content catalog, Learn at your own pace

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Deep In · Lite | $7.00 | per month |
| Basic | $14.00 | per month |
| Deep | $21.00 | per month |
| Deep In · Lite | $35.00 | per 6 months |
| Deep In · Lite | $60.00 | per year |
| Deep — 6 Months | $95.00 | per 6 months |
| Deep — Yearly | $134.99 | per year |


## Frequently asked questions

### Is Vocabulary Builder free?

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

### Is Deep In free?

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

### Do Vocabulary Builder or Deep In have ads?

Neither Vocabulary Builder nor Deep In shows ads.

### Which is updated more often, Vocabulary Builder or Deep In?

Vocabulary Builder ships an update every 9 days, and Deep In every 4 days. Most recently, Vocabulary Builder was updated on October 31, 2026 and Deep In on October 31, 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.*