# SecondBrain vs Adrina AI

The clearest difference is ads: Adrina AI at none against SecondBrain's shown. SecondBrain's advantage is update cadence (every 3 days vs every 2 weeks) and device support (3 vs 1). On price, rating, review sentiment and in-app purchases there is nothing between them.

Both are free to download. SecondBrain sells 3 in-app purchases, starting at $8.99 per month and Adrina AI sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for SecondBrain against 5.0 for Adrina AI. Both are backed by a comparable volume of ratings — 6 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

SecondBrain ships an update every 3 days, Adrina AI every 2 weeks. The most recent releases landed on October 10, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | SecondBrain | Adrina AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (6 ratings)](https://appshunter.io/ios/app/secondbrain-ai-memory/id6762130376/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/adrina-ai/id6784728763/reviews) |
| Number of ratings | **6** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 73 MB | 9 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Federico Cesarini](https://appshunter.io/developer/1888767256) | [Adrina AI LLC](https://appshunter.io/developer/6784728765) |

## What reviewers say

### SecondBrain

[App page](https://appshunter.io/ios/app/secondbrain-ai-memory/id6762130376)

This app automatically transcribes, titles, and files your spoken thoughts, creating a self-organizing note system. It can convert voice notes into calendar events, provide daily summaries, and allow you to chat with your saved information.

**Highlights:** Automatic transcription and titling, AI-powered self-organizing notes, Voice to calendar event creation, Daily morning briefing summaries, Chat with your notes for answers, 3D brain graph visualization, Full-text search, Cross-app sharing

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SecondBrain Pro | $8.99 | per month |
| SecondBrain Pro Yearly | $34.99 | per year |
| SecondBrain Pro Yearly | $44.99 | per year |


### Adrina AI

[App page](https://appshunter.io/ios/app/adrina-ai/id6784728763)

Organize and understand your family's important documents. Scan or upload files, get AI-powered summaries, ask questions about content, and track action items. Safely share information with trusted individuals.

**Highlights:** Scan or upload documents, AI-generated summaries, Chat with your documents, Track tasks and reminders, Organize documents in folders, Safe sharing with Trust Circle

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Adrina Plus | $4.99 | per month |
| Adrina Pro | $7.99 | per month |
| Adrina Plus | $49.99 | per year |
| Adrina Pro | $79.99 | per year |


## Frequently asked questions

### Is SecondBrain free?

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

### Is Adrina AI free?

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

### Which has better reviews, SecondBrain or Adrina AI?

SecondBrain and Adrina AI are both rated 5.0 out of 5 on the App Store, from 6 and 2 ratings respectively.

### Do SecondBrain or Adrina AI have ads?

SecondBrain shows ads; Adrina AI does not.

### Which is updated more often, SecondBrain or Adrina AI?

SecondBrain ships an update every 3 days, and Adrina AI every 2 weeks. Most recently, SecondBrain was updated on October 10, 2026 and Adrina AI on October 12, 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.*