# Rocket Memo vs NULL Memo

The clearest difference is update cadence: NULL Memo at daily against Rocket Memo's every 10 days. NULL Memo also leads on iOS requirement (16.6 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Rocket Memo sells 5 in-app purchases, starting at $0.99 per month and NULL Memo sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Rocket Memo ships an update every 10 days, NULL Memo daily. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Rocket Memo | NULL Memo |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Daily** |
| Monetization | Freemium | — |
| Size | 6 MB | 60 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yoshinori Kasaya](https://appshunter.io/developer/1460652803) | [Aaron Chan](https://appshunter.io/developer/1888707957) |

## What reviewers say

### Rocket Memo

[App page](https://appshunter.io/ios/app/rocket-memo/id1472141702)

Capture thoughts instantly with this fast and organized notepad. Set reminders for important notes and find anything quickly with a powerful search. Designed for seamless idea management.

**Highlights:** Instant thought capture, Tag-based organization, Lightning-fast search, Note reminders, Clean editor

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rocket Pro Monthly | $0.99 | per month |
| Rocket Pro Yearly | $5.99 | per year |
| Small Coffee | $0.99 | one-time |
| Croissant & Coffee | $3.99 | one-time |
| Cake & Coffee | $9.99 | one-time |


### NULL Memo

[App page](https://appshunter.io/ios/app/null-memo-ideas-notes-lists/id6761292505)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NULL Memo Pro | $2.99 | one-time |


## Frequently asked questions

### Is Rocket Memo free?

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

### Is NULL Memo free?

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

### Do Rocket Memo or NULL Memo have ads?

Neither Rocket Memo nor NULL Memo shows ads.

### Which is updated more often, Rocket Memo or NULL Memo?

Rocket Memo ships an update every 10 days, and NULL Memo daily. Most recently, Rocket Memo was updated on October 2, 2026 and NULL Memo on October 1, 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.*