# 풀다 vs Chalcack

The clearest difference is ads: 풀다 at none against Chalcack's shown. 풀다 also leads on iOS requirement (15.0 vs 18.5). Chalcack's advantage is rating (5.0 vs 4.6) and update cadence (every 2 days vs every 4 days). On price, review sentiment, ratings volume and in-app purchases there is nothing between them.

Both are free to download. 풀다 sells 23 in-app purchases, starting at $19.99 per month and Chalcack sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Chalcack holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 16 and 12 respectively. Written reviews point the same way: 90% of 풀다's written reviews are positive against 97% of Chalcack's.

풀다 ships an update every 4 days, Chalcack every 2 days. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | 풀다 | Chalcack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (16 ratings)](https://appshunter.io/ios/app/ai/id1530892838/reviews) | **[5.0 (12 ratings)](https://appshunter.io/ios/app/chalcack-your-study-crush/id6747833381/reviews)** |
| Number of ratings | **16** | 12 |
| Positive reviews | 90.2% of reviews | **97.2% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 days | **Every 2 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 384 MB | 49 MB |
| Requires iOS | **15.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [FilledU Inc.](https://appshunter.io/developer/1530779207) | [Dong Hae Jang](https://appshunter.io/developer/1573538288) |

## What reviewers say

### 풀다

[App page](https://appshunter.io/ios/app/ai/id1530892838)

Prepare for middle and high school exams, mock tests, and college entrance exams with AI-powered problem recommendations. Track your progress, identify weaknesses, and manage your studies effectively.

**Highlights:** Middle/High school exam preparation, Mock test and college entrance exam questions (2015-2023), AI-recommended practice problems, Customizable problem selection by type and difficulty, Learning progress analysis and weakness identification, Study planner with to-do list and timer, Automatic incorrect answer management

**Features:** macOS Compatibility

**In-app purchases (23)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 풀다 패스 월 구독 | $19.99 | per month |
| AI 실전 모의고사 1회 풀이권 | $0.99 | one-time |
| 질문권 10개 | $0.99 | one-time |
| 질문권 50개 | $6.99 | one-time |
| 불꽃 모드 1회 이용권 | $7.99 | one-time |
| 질문권 100개 | $14.99 | one-time |
| 베이직 30일 이용권 | $19.99 | one-time |
| 풀다 패스 90일 이용권 | $39.99 | one-time |
| 스탠다드 30일 이용권 | $44.99 | one-time |
| 베이직 90일 이용권 | $59.99 | one-time |
| 풀다 패스 180일 이용권 | $89.99 | one-time |
| 스탠다드 90일 이용권 | $99.99 | one-time |
| 플러스 90일 이용권 | $119.99 | one-time |
| 스탠다드 180일 이용권 | $129.99 | one-time |
| 풀다 패스 360일 이용권 | $149.99 | one-time |
| 플러스 90일 이용권 | $199.99 | one-time |
| 스탠다드 180일 이용권 | $199.99 | one-time |
| 플러스 180일 이용권 | $199.99 | one-time |
| 스탠다드 360일 이용권 | $229.99 | one-time |
| 스탠다드 360일 이용권 | $299.99 | one-time |
| 플러스 180일 이용권 | $399.99 | one-time |
| 플러스 360일 이용권 | $399.99 | one-time |
| 플러스 360일 이용권 | $799.99 | one-time |


### Chalcack

[App page](https://appshunter.io/ios/app/chalcack-your-study-crush/id6747833381)

This AI-powered study companion helps students master difficult subjects by providing step-by-step solutions and explanations. It recognizes problems from photos and offers a personalized study vault for review. Get instant academic support anytime, anywhere.

**Highlights:** Snap and solve problems from photos, AI-powered step-by-step explanations, Support for Math, Science, English, and more, Master core concepts and principles, Personal study vault and review library, 24/7 AI academic assistance

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium subscription | $9.99 | per month |
| Yearly Pro (Special Offer) | $59.99 | per year |
| Yearly Premium subscription | $79.99 | per year |


## Frequently asked questions

### Is 풀다 free?

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

### Is Chalcack free?

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

### Which has better reviews, 풀다 or Chalcack?

Chalcack is rated higher. 풀다 averages 4.6 out of 5 from 16 ratings, while Chalcack averages 5.0 from 12 ratings.

### Do 풀다 or Chalcack have ads?

Chalcack shows ads; 풀다 does not.

### Which is updated more often, 풀다 or Chalcack?

풀다 ships an update every 4 days, and Chalcack every 2 days. Most recently, 풀다 was updated on October 24, 2026 and Chalcack on October 22, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*