# 신성우의영점잡기 vs Sumday

The clearest difference is ads: 신성우의영점잡기 at none against Sumday's shown. 신성우의영점잡기 also leads on update cadence (every 4 days vs every 11 days). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. 신성우의영점잡기 sells 2 in-app purchases, starting at $2.99 per month and Sumday sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

신성우의영점잡기 ships an update every 4 days, Sumday every 11 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 신성우의영점잡기 | Sumday |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 11 days |
| Monetization | — | Free with in-app purchases |
| Size | 50 MB | 34 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JinWook You](https://appshunter.io/developer/1837824846) | [TON CO., LTD.](https://appshunter.io/developer/6796677381) |

## What reviewers say

### 신성우의영점잡기

[App page](https://appshunter.io/ios/app/id6793049028)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 프리미엄 월간 | $2.99 | per month |
| premium_yearly | $19.99 | per year |


### Sumday

[App page](https://appshunter.io/ios/app/sumday-mental-math-practice/id6802302480)

Sharpen your number sense with daily mental math exercises. This app offers quick arithmetic practice, practical math tricks, and progress tracking to improve your speed and accuracy in just five minutes a day.

**Highlights:** Daily arithmetic questions, Adaptive difficulty levels, Mental math technique cards, Progress tracking and reports, Streak tracking, Offline functionality

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sumday Premium | $3.99 | one-time |


## Frequently asked questions

### Is 신성우의영점잡기 free?

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

### Is Sumday free?

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

### Do 신성우의영점잡기 or Sumday have ads?

Sumday shows ads; 신성우의영점잡기 does not.

### Which is updated more often, 신성우의영점잡기 or Sumday?

신성우의영점잡기 ships an update every 4 days, and Sumday every 11 days. Most recently, 신성우의영점잡기 was updated on October 24, 2026 and Sumday on October 25, 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.*