# Cactus vs BrainDump

The clearest difference is update cadence: BrainDump at every 3 days against Cactus's weekly. BrainDump also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Cactus sells 2 in-app purchases, starting at $14.99 per month and BrainDump sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Cactus ships an update weekly, BrainDump every 3 days. Both last shipped on November 5, 2026.

## The numbers

| Metric | Cactus | BrainDump |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/cactus-ai-memory-sidekick/id6748361695/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 2 MB | 42 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Feidong Song](https://appshunter.io/developer/1792424713) | [Kevin Thomas](https://appshunter.io/developer/1896221158) |

## What reviewers say

### Cactus

[App page](https://appshunter.io/ios/app/cactus-ai-memory-sidekick/id6748361695)

An AI-powered assistant designed to help you manage your day, capture ideas, and organize tasks. It offers natural language interaction, voice input, and secure cloud synchronization for seamless productivity.

**Highlights:** AI-powered assistant, Natural language interaction, Voice capture for ideas, Task organization, Schedule management, Secure cloud sync

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium plan. | $14.99 | per month |
| Cactus Premium Annual | $59.99 | per year |


### BrainDump

[App page](https://appshunter.io/ios/app/braindump-ai-to-do-and-tasks/id6766167154)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BrainDump Pro Weekly | $2.99 | per 7 days |
| BrainDump Annual | $24.99 | per year |


## Frequently asked questions

### Is Cactus free?

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

### Is BrainDump free?

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

### Do Cactus or BrainDump have ads?

Neither Cactus nor BrainDump shows ads.

### Which is updated more often, Cactus or BrainDump?

Cactus ships an update weekly, and BrainDump every 3 days. Most recently, Cactus was updated on November 5, 2026 and BrainDump on November 5, 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.*