# Second Brain vs Orbit

Second Brain and Orbit are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Second Brain sells 2 in-app purchases, starting at $4.99 per month and Orbit sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Second Brain ships an update weekly, Orbit every 9 days. The most recent releases landed on September 8, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Second Brain | Orbit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/second-brain-know-yourself/id6760254340/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | Freemium | — |
| Size | 12 MB | 16 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Liwei Xie](https://appshunter.io/developer/1106616046) | [Runtime Labs LLC](https://appshunter.io/developer/6781023315) |

## What reviewers say

### Second Brain

[App page](https://appshunter.io/ios/app/second-brain-know-yourself/id6760254340)

This AI-powered journal captures your thoughts via voice or text, automatically organizing and connecting them. It helps you recall memories, discover patterns, and reflect on your growth.

**Highlights:** AI classification, tagging, and summarization, Semantic search by meaning, Three-layer memory system, People cards for relationship tracking, Weekly AI reflections, Voice input with transcription, Data export (JSON + Markdown)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Second Brain Pro | $4.99 | per month |
| Second Brain Pro | $39.99 | per year |


### Orbit

[App page](https://appshunter.io/ios/app/orbit-second-brain/id6781023313)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Orbit Pro (Monthly) | $4.99 | per month |
| Orbit Pro (Yearly) | $49.99 | per year |


## Frequently asked questions

### Is Second Brain free?

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

### Is Orbit free?

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

### Do Second Brain or Orbit have ads?

Neither Second Brain nor Orbit shows ads.

### Which is updated more often, Second Brain or Orbit?

Second Brain ships an update weekly, and Orbit every 9 days. Most recently, Second Brain was updated on September 8, 2026 and Orbit on September 22, 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.*