# Second Brain Note vs D1V

The clearest difference is price: Second Brain Note at Free against D1V's $49.99. D1V's advantage is in-app purchases (none vs 1) and device support (4 vs 2). On review sentiment, update cadence and ads there is nothing between them.

Second Brain Note is free to download; D1V costs $49.99 up front. Second Brain Note sells 1 in-app purchase, starting at $4.99 per month. D1V asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 18, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Second Brain Note | D1V |
| --- | --- | --- |
| Price | **Free** | $49.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/second-brain-note/id6753705529/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Subscription | **Free** |
| Size | 12 MB | 100 MB |
| Requires iOS | 26.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 12+ | 4+ |
| Developer | [Chandler Mosteller](https://appshunter.io/developer/1671357283) | [HASH CLOUD LIMITED](https://appshunter.io/developer/1883341763) |

## What reviewers say

### Second Brain Note

[App page](https://appshunter.io/ios/app/second-brain-note/id6753705529)

Organize your thoughts and tasks with a structured knowledge workspace. Capture ideas, visualize connections, and plan your days effectively. Streamline information collection and turn it into actionable insights for work, school, or personal life.

**Highlights:** Hierarchical idea capture with Brain Tree, Visual thinking with Mind Map, Flexible page-based writing in Notebooks, Goal tracking with Milestones and tasks, Daily planning with Calendar time boxing, Cost tracking for expenses, Personal knowledge library creation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro + | $4.99 | per month |


### D1V

[App page](https://appshunter.io/ios/app/d1v-ai-coding-workspace/id6760222863)

This AI-powered mobile workspace allows developers and product teams to manage projects from idea to deployment. It integrates with GitHub, enables AI collaboration within project context, and provides visibility into code, files, and deployments.

**Highlights:** AI-native mobile workspace, GitHub repository import, AI collaboration in project context, Inspect code and files, Track deployments, Manage account activity

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Second Brain Note free?

Second Brain Note is free to download, with in-app purchases available.

### Is D1V free?

D1V costs $49.99, with no in-app purchases.

### Do Second Brain Note or D1V have ads?

Neither Second Brain Note nor D1V shows ads.

### Which is updated more often, Second Brain Note or D1V?

Second Brain Note ships an update every 2 months, and D1V every 2 months. Most recently, Second Brain Note was updated on September 18, 2026 and D1V on September 20, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*