# Customizable calculator vs Rub Memo

The clearest difference is ads: Rub Memo at none against Customizable calculator's shown. Customizable calculator's advantage is update cadence (every 2 days vs every 6 days) and iOS requirement (13.0 vs 16.0). On price, in-app purchases and device support there is nothing between them.

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

Customizable calculator ships an update every 2 days, Rub Memo every 6 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Customizable calculator | Rub Memo |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 6 days |
| Monetization | — | Free |
| Size | 202 MB | 14 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hisashi Yoshizawa](https://appshunter.io/developer/1770019728) | [seiji honda](https://appshunter.io/developer/1896430544) |

## What reviewers say

### Customizable calculator

[App page](https://appshunter.io/ios/app/customizable-calculator/id6740001661)

**In-app purchases:** none


### Rub Memo

[App page](https://appshunter.io/ios/app/rub-memo/id6772340496)

This app allows you to erase text by rubbing your finger over it, mimicking the feel of erasing pencil on paper. It also offers a home screen widget for quick access, reordering paragraphs, and inserting various media like tables, checklists, and drawings.

**Highlights:** Erase text with finger rub, Home screen widget for notes, Reorder paragraphs by long-press and drop, Insert tables, checklists, images, and drawings, Full-text search with highlighted matches, Lock notes with Face ID/Touch ID, Export and share as PDF

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

**In-app purchases:** none


## Frequently asked questions

### Is Customizable calculator free?

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

### Is Rub Memo free?

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

### Do Customizable calculator or Rub Memo have ads?

Customizable calculator shows ads; Rub Memo does not.

### Which is updated more often, Customizable calculator or Rub Memo?

Customizable calculator ships an update every 2 days, and Rub Memo every 6 days. Most recently, Customizable calculator was updated on October 25, 2026 and Rub Memo 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.*