# SendProtest! vs Building a Second Brain

The clearest difference is update cadence: SendProtest! at every 2 months against Building a Second Brain's every 4 months. SendProtest! also leads on iOS requirement (11.0 vs 16.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SendProtest! ships an update every 2 months, Building a Second Brain every 4 months. The most recent releases landed on October 10, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | SendProtest! | Building a Second Brain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (12 ratings)](https://appshunter.io/ios/app/building-a-second-brain/id6744942882/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | — | Free |
| Size | 92 MB | 90 MB |
| Requires iOS | **11.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Costantino Ciervo](https://appshunter.io/developer/1409856410) | [Forte Labs, LLC](https://appshunter.io/developer/1810064260) |

## What reviewers say

### SendProtest!

[App page](https://appshunter.io/ios/app/sendprotest/id1409856411)

**Features:** macOS Compatibility

**In-app purchases:** none


### Building a Second Brain

[App page](https://appshunter.io/ios/app/building-a-second-brain/id6744942882)

This app helps you manage information overload and achieve your goals through personal knowledge management. Connect with a community focused on productivity and digital organization for a more peaceful and purposeful life.

**Highlights:** PARA Method Mini-Course, Community Hub, Exclusive event invitations, Notetaking and creativity resources, Gateway to comprehensive courses

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

**In-app purchases:** none


## Frequently asked questions

### Is SendProtest! free?

SendProtest! is free to download, with no in-app purchases.

### Is Building a Second Brain free?

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

### Do SendProtest! or Building a Second Brain have ads?

Neither SendProtest! nor Building a Second Brain shows ads.

### Which is updated more often, SendProtest! or Building a Second Brain?

SendProtest! ships an update every 2 months, and Building a Second Brain every 4 months. Most recently, SendProtest! was updated on October 10, 2026 and Building a Second Brain on September 28, 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.*