# Memo(Mach) vs Stackbox

The clearest difference is iOS requirement: Memo(Mach) at 15.1 against Stackbox's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Memo(Mach) sells 2 in-app purchases, starting at $1.99 per month and Stackbox sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Memo(Mach) ships an update weekly, Stackbox every 4 days. The most recent releases landed on August 18, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Memo(Mach) | Stackbox |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | Freemium | — |
| Size | 36 MB | 33 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Seoyoung Joung](https://appshunter.io/developer/1809637979) | [YunJae Jeong](https://appshunter.io/developer/1568287924) |

## What reviewers say

### Memo(Mach)

[App page](https://appshunter.io/ios/app/memomach-absolute-speed/id6748346175)

This note-taking application prioritizes simplicity to encourage consistent usage. It offers a straightforward approach to capturing thoughts without feeling like a chore. The app aims to make note-taking an effortless habit.

**Highlights:** Simple note-taking interface, Encourages consistent habit formation, Effortless note capture, Focus on simplicity

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Memo Pro 1month | $1.99 | per month |
| Memo Pro_1 year | $5.99 | per year |


### Stackbox

[App page](https://appshunter.io/ios/app/stackbox-rss-reader/id6758572761)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $1.99 | per month |
| Yearly Plan | $19.99 | per year |


## Frequently asked questions

### Is Memo(Mach) free?

Memo(Mach) is free to download, with in-app purchases available.

### Is Stackbox free?

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

### Do Memo(Mach) or Stackbox have ads?

Neither Memo(Mach) nor Stackbox shows ads.

### Which is updated more often, Memo(Mach) or Stackbox?

Memo(Mach) ships an update weekly, and Stackbox every 4 days. Most recently, Memo(Mach) was updated on August 18, 2026 and Stackbox on September 24, 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.*