# Knock Reminder vs Netacho

The clearest difference is in-app purchases: Netacho at none against Knock Reminder's 1. Netacho also leads on update cadence (every 9 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Knock Reminder sells 1 one-off in-app purchase. Netacho asks for nothing beyond the download.

Knock Reminder ships an update every 2 months, Netacho every 9 days. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Knock Reminder | Netacho |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | — | Free |
| Size | 34 MB | 9 MB |
| Requires iOS | 17.0 | 17 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Seki Hiroyasu](https://appshunter.io/developer/6792599749) | [Kohei Ishikawa](https://appshunter.io/developer/6789856622) |

## What reviewers say

### Knock Reminder

[App page](https://appshunter.io/ios/app/knock-reminder/id6794741120)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Knock Reminder Pro | $2.99 | one-time |


### Netacho

[App page](https://appshunter.io/ios/app/netacho-one-line-idea-notes/id6797323735)

Capture fleeting thoughts, ideas, and conversation starters quickly with brief notes. Organize them by category, mark them as shared, and easily recall them later. Supports voice input, links, and photos.

**Highlights:** One-tap note saving, Voice dictation support, Categorization and color-coding, Mark notes as 'told', Link and photo attachments, Home screen widget

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

**In-app purchases:** none


## Frequently asked questions

### Is Knock Reminder free?

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

### Is Netacho free?

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

### Do Knock Reminder or Netacho have ads?

Neither Knock Reminder nor Netacho shows ads.

### Which is updated more often, Knock Reminder or Netacho?

Knock Reminder ships an update every 2 months, and Netacho every 9 days. Most recently, Knock Reminder was updated on October 31, 2026 and Netacho on November 6, 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.*