# Insight Flow vs Second Brain

The clearest difference is iOS requirement: Insight Flow at 16.0 against Second Brain's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Insight Flow ships an update every 3 days, Second Brain every 5 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Insight Flow | Second Brain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 5 days |
| Size | 67 MB | 17 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [sumin jin](https://appshunter.io/developer/1896298292) | [Aleksandr Pustotin](https://appshunter.io/developer/1854093247) |

## What reviewers say

### Insight Flow

[App page](https://appshunter.io/ios/app/insight-flow-my-second-brain/id6766516383)

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

**In-app purchases:** none


### Second Brain

[App page](https://appshunter.io/ios/app/second-brain-voice-to-action/id6787875111)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Insight Flow free?

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

### Is Second Brain free?

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

### Do Insight Flow or Second Brain have ads?

Neither Insight Flow nor Second Brain shows ads.

### Which is updated more often, Insight Flow or Second Brain?

Insight Flow ships an update every 3 days, and Second Brain every 5 days. Most recently, Insight Flow was updated on October 25, 2026 and Second Brain on October 25, 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.*