# Brainstorming vs Deer

The clearest difference is review sentiment: Deer at 89% against Brainstorming's 26%. Deer also leads on rating (4.8 vs 4.1). Brainstorming's advantage is ratings volume (71 vs 6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Brainstorming sells 2 in-app purchases, starting at $1.99 per month and Deer sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Deer holds the better App Store score, 4.8 against 4.1. That said, the two scores are not equally well evidenced: Brainstorming has 71 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 26% of Brainstorming's written reviews are positive against 89% of Deer's.

Both ship on a similar rhythm, roughly every 9 days. The most recent releases landed on September 19, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Brainstorming | Deer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (71 ratings)](https://appshunter.io/ios/app/brainstorming/id1438964773/reviews) | **[4.8 (6 ratings)](https://appshunter.io/ios/app/deer-note-outline-mindmap/id1509262785/reviews)** |
| Number of ratings | **71** | 6 |
| Positive reviews | 26.1% of reviews | **88.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | Every 9 days |
| Monetization | Freemium | Free with in-app purchases |
| Size | 136 MB | 11 MB |
| Requires iOS | 15.0 | 15 |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Guillaume Cendre](https://appshunter.io/developer/1287563086) | [佳文 潘](https://appshunter.io/developer/1312631799) |

## What reviewers say

### Brainstorming

[App page](https://appshunter.io/ios/app/brainstorming/id1438964773)

This app helps you explore and develop ideas through interactive word clouds and suggestions. You can add various media like images, links, and voice memos to enrich your concepts. It's designed to streamline creative processes for projects, naming, and investigations.

**Highlights:** Interactive idea exploration, Thematic word cloud generation, AI-powered suggestions, Multimedia content integration, Project sharing, Export as image, video, or PDF

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Brainstorming Premium | $1.99 | per month |
| Brainstorming Platinum | $3.99 | per month |


### Deer

[App page](https://appshunter.io/ios/app/deer-note-outline-mindmap/id1509262785)

This app offers structured note-taking with features to reorder lines, convert notes to outlines, and generate mind maps. It helps organize complex information and newly learned knowledge points for clearer understanding.

**Highlights:** Freely reorder notes by line, One-click outline conversion, One-click mind map generation, Drag and drop paragraph reordering, Clearer structure visualization

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription Monthly | $0.99 | per month |
| Subscription Yearly | $5.99 | per year |
| Lifetime VIP | $9.99 | one-time |


## Frequently asked questions

### Is Brainstorming free?

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

### Is Deer free?

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

### Which has better reviews, Brainstorming or Deer?

Deer is rated higher. Brainstorming averages 4.1 out of 5 from 71 ratings, while Deer averages 4.8 from 6 ratings.

### Do Brainstorming or Deer have ads?

Neither Brainstorming nor Deer shows ads.

### Which is updated more often, Brainstorming or Deer?

Brainstorming ships an update every 9 days, and Deer every 9 days. Most recently, Brainstorming was updated on September 19, 2026 and Deer on September 22, 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.*