# 개념원리ai vs 마루랩

The clearest difference is rating: 마루랩 at 5.0 against 개념원리ai's 4.2. 마루랩 also leads on iOS requirement (13.6 vs 15.0). 개념원리ai's advantage is in-app purchases (none vs 28) and update cadence (fortnightly vs every 2 months). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. 마루랩 sells 28 one-off in-app purchases. 개념원리ai asks for nothing beyond the download.

마루랩 holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 5 and 6 respectively. Written reviews point the same way: 95% of 개념원리ai's written reviews are positive against 100% of 마루랩's.

개념원리ai ships an update fortnightly, 마루랩 every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | 개념원리ai | 마루랩 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (5 ratings)](https://appshunter.io/ios/app/ai/id6467370741/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/id6599836232/reviews)** |
| Number of ratings | 5 | **6** |
| Positive reviews | 95.2% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 145 MB | 16 MB |
| Requires iOS | 15.0 | **13.6** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [(주)개념원리](https://appshunter.io/developer/1589346598) | [Tori Edufin Inc.](https://appshunter.io/developer/1760703170) |

## What reviewers say

### 개념원리ai

[App page](https://appshunter.io/ios/app/ai/id6467370741)

This app combines a popular math textbook with AI to offer personalized learning. It provides free assessments with detailed explanations, allows users to create custom problem notes, and features a ranking system for friendly competition. Prepare for exams with AI-predicted questions and access a vast problem bank for all middle and high school levels.

**Highlights:** Personalized assessments with free detailed explanations, Customizable problem notes for focused review, AI-predicted exam questions based on school and curriculum, Extensive problem bank for all grades, Interactive ranking system and missions for motivation, Study groups and Q&A for collaborative learning

**In-app purchases:** none


### 마루랩

[App page](https://appshunter.io/ios/app/id6599836232)

Learn about finance and economics through interactive quizzes and simulated stock trading. Earn virtual currency by answering questions and use it to grow your assets in a realistic investment environment. Access expert articles to deepen your understanding and track your portfolio's performance.

**Highlights:** Game-based financial education, Interactive quizzes, Simulated stock trading, Virtual investment funds, Financial and economic articles, Portfolio performance tracking

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

**In-app purchases (28)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 투자내역 열람권 1회 | $0.49 | one-time |
| 대회용 200만원 | $0.99 | one-time |
| 투자내역 열람권 2회 | $0.99 | one-time |
| 모의투자금 2,000만원 | $0.99 | one-time |
| 대회용 300만원 | $1.99 | one-time |
| 투자내역 열람권 3회 | $1.99 | one-time |
| 모의투자금 1회 한정 1,000만원(할인판매) | $1.99 | one-time |
| 대회용 투자금 500만원 | $2.99 | one-time |
| 투자내역 열람권 5회 | $2.99 | one-time |
| 투자내역 열람권 10회 | $2.99 | one-time |
| 첫구매 이벤트 대회용 1,000만원 | $2.99 | one-time |
| 첫구매 이벤트 열람권 10회 | $2.99 | one-time |
| 대회용 투자금 1,000만원 | $2.99 | one-time |
| 모의투자금 500만원 | $3.99 | one-time |
| 7,000 루핀 | $4.99 | one-time |
| 8,000 루핀 | $4.99 | one-time |
| 10,000 루핀 | $6.99 | one-time |
| 모의투자금 1,000만원 | $6.99 | one-time |
| 13,000 루핀 | $8.99 | one-time |
| 25,000 루핀 | $17.99 | one-time |
| 모의투자금 3,000만원 | $17.99 | one-time |
| 30,000 루핀 | $19.99 | one-time |
| 40,000 루핀 | $29.99 | one-time |
| 모의투자금 5,000만원 | $29.99 | one-time |
| 50,000 루핀 | $34.99 | one-time |
| 70,000 루핀 | $49.99 | one-time |
| 모의투자금 1억원 | $49.99 | one-time |
| 100,000 루핀 | $69.99 | one-time |


## Frequently asked questions

### Is 개념원리ai free?

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

### Is 마루랩 free?

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

### Which has better reviews, 개념원리ai or 마루랩?

마루랩 is rated higher. 개념원리ai averages 4.2 out of 5 from 5 ratings, while 마루랩 averages 5.0 from 6 ratings.

### Do 개념원리ai or 마루랩 have ads?

Neither 개념원리ai nor 마루랩 shows ads.

### Which is updated more often, 개념원리ai or 마루랩?

개념원리ai ships an update fortnightly, and 마루랩 every 2 months. Most recently, 개념원리ai was updated on October 24, 2026 and 마루랩 on October 24, 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.*