# Geek Math vs 付箋ノート「ウミブドウ」

The clearest difference is in-app purchases: 付箋ノート「ウミブドウ」 at none against Geek Math's 1. 付箋ノート「ウミブドウ」 also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 10 months). Geek Math's advantage is iOS requirement (12.0 vs 18.6). On price and device support there is nothing between them.

Both are free to download. Geek Math sells 1 one-off in-app purchase. 付箋ノート「ウミブドウ」 asks for nothing beyond the download.

Geek Math ships an update every 10 months, 付箋ノート「ウミブドウ」 every 3 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Geek Math | 付箋ノート「ウミブドウ」 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/geek-math-linking-numbers/id6474589909/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 29 MB | 27 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [QQ TSUBASA](https://appshunter.io/developer/568750169) | [Mineaki Sakatoku](https://appshunter.io/developer/1674976728) |

## What reviewers say

### Geek Math

[App page](https://appshunter.io/ios/app/geek-math-linking-numbers/id6474589909)

This calculator app features an intuitive column layout for multiple equations, allowing real-time modification of numbers and operators. It offers interactive linking of numbers and a unique lock feature to protect important values.

**Highlights:** Intuitive column layout, Real-time equation modification, Linked numbers for interactive calculation, Lock feature for number protection, Multi-line display, Theme selection

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium No ad & more math rows | $1.99 | one-time |


### 付箋ノート「ウミブドウ」

[App page](https://appshunter.io/ios/app/id6798289564)

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

**In-app purchases:** none


## Frequently asked questions

### Is Geek Math free?

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

### Is 付箋ノート「ウミブドウ」 free?

付箋ノート「ウミブドウ」 is free to download, with no in-app purchases.

### Do Geek Math or 付箋ノート「ウミブドウ」 have ads?

Geek Math shows ads; 付箋ノート「ウミブドウ」 does not.

### Which is updated more often, Geek Math or 付箋ノート「ウミブドウ」?

Geek Math ships an update every 10 months, and 付箋ノート「ウミブドウ」 every 3 weeks. Most recently, Geek Math was updated on November 4, 2026 and 付箋ノート「ウミブドウ」 on October 31, 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.*