# SecondBrain AI Assistant vs Aide Calendar

The clearest difference is update cadence: SecondBrain AI Assistant at daily against Aide Calendar's every 9 days. SecondBrain AI Assistant also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. SecondBrain AI Assistant sells 2 in-app purchases, starting at $9.99 per month and Aide Calendar sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

SecondBrain AI Assistant ships an update daily, Aide Calendar every 9 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SecondBrain AI Assistant | Aide Calendar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 9 days |
| Size | 23 MB | 6 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [BUILD TO CONNECT LTD](https://appshunter.io/developer/6778076361) | [SUMMERCLOUDE PTE. LTD.](https://appshunter.io/developer/6779021333) |

## What reviewers say

### SecondBrain AI Assistant

[App page](https://appshunter.io/ios/app/secondbrain-ai-assistant/id6778076359)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Second Brain Pro Monthly | $9.99 | per month |
| Second Brain Pro Annual | $69.99 | per year |


### Aide Calendar

[App page](https://appshunter.io/ios/app/aide-calendar-ai-planner/id6779021331)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| Pro Annual | $29.99 | per year |


## Frequently asked questions

### Is SecondBrain AI Assistant free?

SecondBrain AI Assistant is free to download, with in-app purchases available.

### Is Aide Calendar free?

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

### Do SecondBrain AI Assistant or Aide Calendar have ads?

Neither SecondBrain AI Assistant nor Aide Calendar shows ads.

### Which is updated more often, SecondBrain AI Assistant or Aide Calendar?

SecondBrain AI Assistant ships an update daily, and Aide Calendar every 9 days. Most recently, SecondBrain AI Assistant was updated on October 28, 2026 and Aide Calendar 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.*