# Data School vs Thinkbig TOPIK

Data School and Thinkbig TOPIK 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. Data School sells 27 one-off in-app purchases and Thinkbig TOPIK sells 5 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 7, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Data School | Thinkbig TOPIK |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 87.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 28 MB | 30 MB |
| Requires iOS | 12.4 | 12.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Data Analytics LLC](https://appshunter.io/developer/1628946212) | [Woongjin Thinkbig Co., Ltd.](https://appshunter.io/developer/1614968450) |

## What reviewers say

### Data School

[App page](https://appshunter.io/ios/app/data-school/id1628946210)

**Features:** macOS Compatibility

**In-app purchases (27)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Llama AI туслах хөгжүүлэх | $4.99 | one-time |
| Python, ML үл хөдлөхийн үнэ | $9.99 | one-time |
| Procreate Дижитал Арт | $9.99 | one-time |
| Бизнес Excel 2.0 Ахисан шат | $9.99 | one-time |
| Дата анализ SPSS цахим ном | $9.99 | one-time |
| Unsupervised Machine Learning | $12.99 | one-time |
| PowerBI DAX KPI боловсруулах | $12.99 | one-time |
| Өгөгдлийн цэвэрлэгээ | $14.99 | one-time |
| ARIMA хугацааны цуваа Python | $14.99 | one-time |
| Excel Дата Анализ | $19.99 | one-time |
| R программ өгөгдөл дүрслэх | $19.99 | one-time |
| SQL Дата Анализ | $23.99 | one-time |
| Supervised Machine Learning | $24.99 | one-time |
| Machine Learning Capstone | $24.99 | one-time |
| Streamlit ашиглан дата апп | $24.99 | one-time |
| Data Science Python | $25.99 | one-time |
| Бизнес EXCEL 1.0 | $28.99 | one-time |
| Дата аналитикс үндэс | $29.99 | one-time |
| ML практик ур чадвар | $29.99 | one-time |
| Excel VBA Автоматжуулалт | $29.99 | one-time |
| Машин сургалтын үндэс | $29.99 | one-time |
| Deep Learning TensorFlow Keras | $29.99 | one-time |
| Power BI ДАШБОАРД | $31.99 | one-time |
| Дата Анализ SPSS | $31.99 | one-time |
| Статистикийн үндэс | $34.99 | one-time |
| Дата Анализ R | $38.99 | one-time |
| IELTS Academic цогц сургалт | $39.99 | one-time |


### Thinkbig TOPIK

[App page](https://appshunter.io/ios/app/thinkbig-topik/id6736814780)

Enhance your TOPIK score with AI-powered, customized learning. This app offers structured courses, practice questions, and mock tests tailored to your skill level. Track your progress and review difficult concepts to prepare effectively for the exam.

**Highlights:** AI-based customized learning curriculum, 12 courses for TOPIK levels 1-6, Practice questions and mock tests, Vocabulary and grammar review, Writing exercises with feedback, Progress tracking and real-time evaluation, Multi-language support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1-Month Plan Trial | $9.99 | per month |
| 1-Month Plan | $9.99 | per month |
| 3-Month Plan | $44.99 | one-time |
| 6-Month Plan | $77.99 | one-time |
| 12-Month Plan | $118.99 | one-time |


## Frequently asked questions

### Is Data School free?

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

### Is Thinkbig TOPIK free?

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

### Do Data School or Thinkbig TOPIK have ads?

Neither Data School nor Thinkbig TOPIK shows ads.

### Which is updated more often, Data School or Thinkbig TOPIK?

Data School ships an update every 2 weeks, and Thinkbig TOPIK every 2 weeks. Most recently, Data School was updated on October 7, 2026 and Thinkbig TOPIK on September 28, 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.*