# sliiidea vs Cerebro

The clearest difference is in-app purchases: sliiidea at none against Cerebro's 2. sliiidea also leads on device support (3 vs 1) and iOS requirement (13.4 vs 26.0). Cerebro's advantage is ads (none vs shown). On price and update cadence there is nothing between them.

Both are free to download. Cerebro sells 2 in-app purchases, starting at $9.99 per month. sliiidea asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 25, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | sliiidea | Cerebro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cerebro-your-second-brain/id6761205619/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 31 MB | 87 MB |
| Requires iOS | **13.4** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [palmio](https://appshunter.io/developer/1759355081) | [Henry PL, LLC](https://appshunter.io/developer/1470349167) |

## What reviewers say

### sliiidea

[App page](https://appshunter.io/ios/app/sliiidea/id6575381412)

**Features:** macOS Compatibility

**In-app purchases:** none


### Cerebro

[App page](https://appshunter.io/ios/app/cerebro-your-second-brain/id6761205619)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cerebro Pro | $9.99 | per month |
| Cerebro Pro | $79.99 | per year |


## Frequently asked questions

### Is sliiidea free?

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

### Is Cerebro free?

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

### Do sliiidea or Cerebro have ads?

sliiidea shows ads; Cerebro does not.

### Which is updated more often, sliiidea or Cerebro?

sliiidea ships an update every 3 weeks, and Cerebro every 3 weeks. Most recently, sliiidea was updated on September 25, 2026 and Cerebro on October 25, 2026.

---

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