# 떡고치 vs 90초암산왕

The clearest difference is review sentiment: 90초암산왕 at 100% against 떡고치's 22%. 90초암산왕 also leads on update cadence (every 4 days vs every 2 months). 떡고치's advantage is iOS requirement (12.4 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

떡고치 ships an update every 2 months, 90초암산왕 every 4 days. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 떡고치 | 90초암산왕 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 22.2% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free | Free |
| Size | 30 MB | 59 MB |
| Requires iOS | **12.4** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Minho Jo](https://appshunter.io/developer/1703612159) | [HYUNWOO LEE](https://appshunter.io/developer/1592216709) |

## What reviewers say

### 떡고치

[App page](https://appshunter.io/ios/app/id6470000837)

Raise your own virtual pet, a "tteokgu," in this Tamagotchi-style game. Feed it honey to help it grow and thrive. Experience the joy of nurturing a unique digital companion.

**Highlights:** Virtual pet raising, Nurture and growth mechanics, Honey-based feeding system, Unique digital companion, Tamagotchi-style gameplay

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

**In-app purchases:** none


### 90초암산왕

[App page](https://appshunter.io/ios/app/90/id6695733334)

Challenge yourself to solve as many math problems as possible within 90 seconds. Improve your calculation speed and accuracy across various addition, subtraction, multiplication, and division games. Compete with others on leaderboards and share your scores.

**Highlights:** Timed math challenges, 17 game modes, Addition, subtraction, multiplication, division, Leaderboards, Score sharing, Brain training

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

**In-app purchases:** none


## Frequently asked questions

### Is 떡고치 free?

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

### Is 90초암산왕 free?

90초암산왕 is free to download, with no in-app purchases.

### Do 떡고치 or 90초암산왕 have ads?

Neither 떡고치 nor 90초암산왕 shows ads.

### Which is updated more often, 떡고치 or 90초암산왕?

떡고치 ships an update every 2 months, and 90초암산왕 every 4 days. Most recently, 떡고치 was updated on November 7, 2026 and 90초암산왕 on October 30, 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.*