# Calendar+ 2 vs Second Brain

The clearest difference is in-app purchases: Second Brain at none against Calendar+ 2's 3. Calendar+ 2's advantage is update cadence (every 3 days vs monthly) and iOS requirement (18.2 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Calendar+ 2 sells 3 in-app purchases, starting at $4.99 per month. Second Brain asks for nothing beyond the download.

Calendar+ 2 ships an update every 3 days, Second Brain monthly. The most recent releases landed on November 13, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Calendar+ 2 | Second Brain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Monthly |
| Size | 45 MB | 37 MB |
| Requires iOS | **18.2** | 26.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Joshua & Company Inc.](https://appshunter.io/developer/1840870031) | [Dcode](https://appshunter.io/developer/1868391710) |

## What reviewers say

### Calendar+ 2

[App page](https://appshunter.io/ios/app/calendar-plus-2-planner-widget/id6767846596)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $4.99 | per month |
| Yearly subscription | $29.99 | per year |
| Lifetime purchase | $149.99 | one-time |


### Second Brain

[App page](https://appshunter.io/ios/app/second-brain-ai-note/id6799343264)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calendar+ 2 free?

Calendar+ 2 is free to download, with in-app purchases available.

### Is Second Brain free?

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

### Do Calendar+ 2 or Second Brain have ads?

Neither Calendar+ 2 nor Second Brain shows ads.

### Which is updated more often, Calendar+ 2 or Second Brain?

Calendar+ 2 ships an update every 3 days, and Second Brain monthly. Most recently, Calendar+ 2 was updated on November 13, 2026 and Second Brain on October 31, 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.*