# Simple Notes vs Modbus Viewer

The clearest difference is in-app purchases: Modbus Viewer at none against Simple Notes's 1. Modbus Viewer also leads on update cadence (every 2 days vs every 2 weeks). Simple Notes's advantage is iOS requirement (15.1 vs 18.5). On price, ads and device support there is nothing between them.

Both are free to download. Simple Notes sells 1 one-off in-app purchase. Modbus Viewer asks for nothing beyond the download.

Simple Notes ships an update every 2 weeks, Modbus Viewer every 2 days. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Simple Notes | Modbus Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (11 ratings)](https://appshunter.io/ios/app/simple-notes-take-notes/id6476257739/reviews)** | — |
| Number of ratings | **11** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | Free | — |
| Size | 52 MB | 7 MB |
| Requires iOS | **15.1** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [naoki otsu](https://appshunter.io/developer/1082476153) | [Erdem Bilgicer](https://appshunter.io/developer/1824808762) |

## What reviewers say

### Simple Notes

[App page](https://appshunter.io/ios/app/simple-notes-take-notes/id6476257739)

A powerful and intuitive note-taking application designed to enhance productivity and streamline daily workflows. Organize notes with unlimited tabs, search instantly, and set reminders. Protect your data with biometric authentication and export to CSV.

**Highlights:** Unlimited tab management, Free rearrangement of tabs and memos, Advanced search function, Recently updated notes list, Notification feature, Biometric authentication, CSV export

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Pay Once) | $4.99 | one-time |


### Modbus Viewer

[App page](https://appshunter.io/ios/app/modbus-viewer/id6748247211)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Simple Notes free?

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

### Is Modbus Viewer free?

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

### Do Simple Notes or Modbus Viewer have ads?

Neither Simple Notes nor Modbus Viewer shows ads.

### Which is updated more often, Simple Notes or Modbus Viewer?

Simple Notes ships an update every 2 weeks, and Modbus Viewer every 2 days. Most recently, Simple Notes was updated on September 23, 2026 and Modbus Viewer on September 17, 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.*