# 졸리버 vs DoubleDive

The clearest difference is in-app purchases: 졸리버 at none against DoubleDive's 2. DoubleDive's advantage is update cadence (daily vs every 3 days) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. DoubleDive sells 2 one-off in-app purchases. 졸리버 asks for nothing beyond the download.

졸리버 ships an update every 3 days, DoubleDive daily. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 졸리버 | DoubleDive |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/doubledive/id6783585810/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | **Daily** |
| Monetization | — | Freemium |
| Size | 139 MB | 82 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SeungWoo Lee](https://appshunter.io/developer/1709094357) | [LEVELUP AI GROUP LLC](https://appshunter.io/developer/6783585812) |

## What reviewers say

### 졸리버

[App page](https://appshunter.io/ios/app/ai/id6749142771)

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

**In-app purchases:** none


### DoubleDive

[App page](https://appshunter.io/ios/app/doubledive/id6783585810)

This app uses AI to help students understand complex problems by breaking them down step-by-step and engaging them with questions. It supports a wide range of subjects and standardized test preparation, offering personalized learning experiences.

**Highlights:** AI-powered step-by-step problem solving, Interactive questioning for understanding, Supports various subjects and standardized tests, Voice interaction for clarification, Practice problem generation, Personalized learning notebook, Multilingual support

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 20 Credits | $4.99 | one-time |
| 50 Credits | $10.99 | one-time |


## Frequently asked questions

### Is 졸리버 free?

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

### Is DoubleDive free?

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

### Do 졸리버 or DoubleDive have ads?

Neither 졸리버 nor DoubleDive shows ads.

### Which is updated more often, 졸리버 or DoubleDive?

졸리버 ships an update every 3 days, and DoubleDive daily. Most recently, 졸리버 was updated on October 13, 2026 and DoubleDive on October 7, 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.*