# AR海中奇迹 vs Rulvo

The clearest difference is update cadence: Rulvo at every 4 days against AR海中奇迹's every 7 months. AR海中奇迹's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (9.0 vs 17.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for AR海中奇迹 against 5.0 for Rulvo. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

AR海中奇迹 ships an update every 7 months, Rulvo every 4 days. The most recent releases landed on October 4, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | AR海中奇迹 | Rulvo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/ar/id1243879715/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/rulvo/id6807753839/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 555 MB | 267 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Chang Chun Cinergie Cultural Industry Co., Ltd.](https://appshunter.io/developer/1145776580) | [同德 郑](https://appshunter.io/developer/6788617584) |

## What reviewers say

### AR海中奇迹

[App page](https://appshunter.io/ios/app/ar/id1243879715)

This app uses AR technology to teach children about naval vessels. It allows users to explore detailed 3D models, understand their structures and principles, and engage in virtual combat scenarios. It aims to spark curiosity and foster a love for science and history.

**Highlights:** AR-powered 4D panoramic reconstruction, Detailed 3D ship models, Interactive dissection and analysis, Virtual combat scenarios, Ship manufacturing principles and history, Five-sense interaction

**Features:** macOS Compatibility

**In-app purchases:** none


### Rulvo

[App page](https://appshunter.io/ios/app/rulvo/id6807753839)

This app helps students manage their academic life by providing tools for scheduling, focused study sessions, and exam preparation. It offers countdown timers, customizable plans, and progress tracking to ensure users are ready for their exams.

**Highlights:** Exam countdown timer, Daily timetable scheduling, Focused study sessions with breaks, Timed exam practice mode, Live Activity and Home Screen widgets, Learning history and daily summaries

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

**In-app purchases:** none


## Frequently asked questions

### Is AR海中奇迹 free?

AR海中奇迹 is free to download, with no in-app purchases.

### Is Rulvo free?

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

### Which has better reviews, AR海中奇迹 or Rulvo?

AR海中奇迹 and Rulvo are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do AR海中奇迹 or Rulvo have ads?

Neither AR海中奇迹 nor Rulvo shows ads.

### Which is updated more often, AR海中奇迹 or Rulvo?

AR海中奇迹 ships an update every 7 months, and Rulvo every 4 days. Most recently, AR海中奇迹 was updated on October 4, 2026 and Rulvo on October 21, 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.*