# Memento vs Siftlee

The clearest difference is in-app purchases: Memento at none against Siftlee's 3. Memento also leads on update cadence (daily vs every 3 weeks). Siftlee's advantage is iOS requirement (17.2 vs 26.0). On price, ads 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. Memento asks for nothing beyond the download.

Memento ships an update daily, Siftlee every 3 weeks. The most recent releases landed on September 17, 2026 and August 30, 2026 respectively.

## The numbers

| Metric | Memento | Siftlee |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 3 weeks |
| Size | 1 MB | 30 MB |
| Requires iOS | 26.0 | **17.2** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yichao Li](https://appshunter.io/developer/1894684664) | [Ainur Corp.](https://appshunter.io/developer/1896573227) |

## What reviewers say

### Memento

[App page](https://appshunter.io/ios/app/memento-second-memory/id6763452017)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Memento free?

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

### Is Siftlee free?

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

### Do Memento or Siftlee have ads?

Neither Memento nor Siftlee shows ads.

### Which is updated more often, Memento or Siftlee?

Memento ships an update daily, and Siftlee every 3 weeks. Most recently, Memento was updated on September 17, 2026 and Siftlee on August 30, 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.*