# SecondBrain vs UnitProof

The clearest difference is in-app purchases: UnitProof at none against SecondBrain's 3. UnitProof also leads on ads (none vs shown). SecondBrain's advantage is update cadence (every 3 days vs fortnightly) and device support (3 vs 1). On price, rating and monetization model there is nothing between them.

Both are free to download. SecondBrain sells 3 in-app purchases, starting at $8.99 per month. UnitProof asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for SecondBrain against 5.0 for UnitProof. Both are backed by a comparable volume of ratings — 6 and 2 respectively.

SecondBrain ships an update every 3 days, UnitProof fortnightly. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SecondBrain | UnitProof |
| --- | --- | --- |
| 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/unitproof-landlord-checklist/id6793589771/reviews) |
| Number of ratings | **6** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Fortnightly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 73 MB | 14 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Federico Cesarini](https://appshunter.io/developer/1888767256) | [Paprika Tech LLC](https://appshunter.io/developer/1849782221) |

## 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 |


### UnitProof

[App page](https://appshunter.io/ios/app/unitproof-landlord-checklist/id6793589771)

Streamline property inspections with voice-to-text notes and photo attachments. Generate professional PDF reports for move-in, move-out, and appraisals. Works offline and prioritizes user privacy.

**Highlights:** Voice-to-text notes, Photo attachments per room, Customizable room lists, Offline functionality, PDF report export, Move-in/Move-out templates

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

**In-app purchases:** none


## Frequently asked questions

### Is SecondBrain free?

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

### Is UnitProof free?

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

### Which has better reviews, SecondBrain or UnitProof?

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

### Do SecondBrain or UnitProof have ads?

SecondBrain shows ads; UnitProof does not.

### Which is updated more often, SecondBrain or UnitProof?

SecondBrain ships an update every 3 days, and UnitProof fortnightly. Most recently, SecondBrain was updated on October 31, 2026 and UnitProof on October 24, 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.*