# Calmo vs noteSUM

The clearest difference is in-app purchases: Calmo at none against noteSUM's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. noteSUM sells 3 one-off in-app purchases. Calmo asks for nothing beyond the download.

Calmo ships an update every 3 weeks, noteSUM monthly. The most recent releases landed on September 18, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Calmo | noteSUM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/calmo-easy-to-use-calculator/id1541318864/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 7 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hiroki Oka](https://appshunter.io/developer/1464653539) | [Kazuhiro Sawamura](https://appshunter.io/developer/620439638) |

## What reviewers say

### Calmo

[App page](https://appshunter.io/ios/app/calmo-easy-to-use-calculator/id1541318864)

This app combines a calculator with note-taking capabilities, allowing users to create formulas, aggregate values, and sum them up. It offers a convenient interface for building tables with easy keyboard navigation and adjustable item positioning.

**Highlights:** Integrated calculator and notes, Formula creation and calculation, Value aggregation and summation, Easy table creation, Keyboard navigation, Adjustable item positioning

**Features:** macOS Compatibility

**In-app purchases:** none


### noteSUM

[App page](https://appshunter.io/ios/app/notesum/id1553539735)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Number of History records | $0.99 | one-time |
| Number of Favorites | $0.99 | one-time |
| Hide Ads | $2.99 | one-time |


## Frequently asked questions

### Is Calmo free?

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

### Is noteSUM free?

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

### Do Calmo or noteSUM have ads?

Both Calmo and noteSUM show ads.

### Which is updated more often, Calmo or noteSUM?

Calmo ships an update every 3 weeks, and noteSUM monthly. Most recently, Calmo was updated on September 18, 2026 and noteSUM on September 8, 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.*