# Abox Note · Markdown Notes vs Second Brain

The clearest difference is in-app purchases: Abox Note · Markdown Notes at none against Second Brain's 1. Abox Note · Markdown Notes also leads on update cadence (fortnightly vs every 3 months) and iOS requirement (13.0 vs 15.0). Second Brain's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Second Brain sells 1 one-off in-app purchase. Abox Note · Markdown Notes asks for nothing beyond the download.

Abox Note · Markdown Notes ships an update fortnightly, Second Brain every 3 months. The most recent releases landed on September 18, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Abox Note · Markdown Notes | Second Brain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 3 months |
| Size | 210 MB | 25 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guangwei Yu](https://appshunter.io/developer/1873973872) | [Selahattin Bozat](https://appshunter.io/developer/1895293163) |

## What reviewers say

### Abox Note · Markdown Notes

[App page](https://appshunter.io/ios/app/abox-note-markdown-notes/id6758658913)

**In-app purchases:** none


### Second Brain

[App page](https://appshunter.io/ios/app/second-brain-notes-and-knowledge/id6775839727)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Second Brain Premium | $9.99 | one-time |


## Frequently asked questions

### Is Abox Note · Markdown Notes free?

Abox Note · Markdown Notes is free to download, with no in-app purchases.

### Is Second Brain free?

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

### Do Abox Note · Markdown Notes or Second Brain have ads?

Abox Note · Markdown Notes shows ads; Second Brain does not.

### Which is updated more often, Abox Note · Markdown Notes or Second Brain?

Abox Note · Markdown Notes ships an update fortnightly, and Second Brain every 3 months. Most recently, Abox Note · Markdown Notes was updated on September 18, 2026 and Second Brain 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.*