# Siftlee vs Second Brain Vault

The clearest difference is iOS requirement: Siftlee at 17.2 against Second Brain Vault's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Siftlee sells 3 in-app purchases, starting at $9.99 per 7 days and Second Brain Vault sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Siftlee | Second Brain Vault |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 30 MB | 2 MB |
| Requires iOS | **17.2** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ainur Corp.](https://appshunter.io/developer/1896573227) | [Byoungho Kim](https://appshunter.io/developer/1888452963) |

## What reviewers say

### Siftlee

[App page](https://appshunter.io/ios/app/siftlee-ai-second-brain/id6768440046)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $9.99 | per 7 days |
| Monthly | $19.99 | per month |
| Annual | $129.99 | per year |


### Second Brain Vault

[App page](https://appshunter.io/ios/app/second-brain-vault/id6782200821)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Second Brain Vault (Lifetime) | $17.99 | one-time |


## Frequently asked questions

### Is Siftlee free?

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

### Is Second Brain Vault free?

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

### Do Siftlee or Second Brain Vault have ads?

Neither Siftlee nor Second Brain Vault shows ads.

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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.*