# Deer vs SDG Network

The clearest difference is device support: Deer at 4 against SDG Network's 2. Deer also leads on iOS requirement (15 vs 17.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Deer sells 3 in-app purchases, starting at $0.99 per month and SDG Network sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 9 days. The most recent releases landed on September 22, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Deer | SDG Network |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/deer-note-outline-mindmap/id1509262785/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | Every 9 days |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 86 MB |
| Requires iOS | **15** | 17.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [佳文 潘](https://appshunter.io/developer/1312631799) | [SDG Network](https://appshunter.io/developer/1811715689) |

## What reviewers say

### 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 |


### SDG Network

[App page](https://appshunter.io/ios/app/sdg-network-sustainability/id6748471059)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SDG Network Professional | $6.99 | per month |
| SDG Network Enterprise | $22.99 | per month |
| SDG Network Impact Partner | $99.99 | per month |


## Frequently asked questions

### Is Deer free?

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

### Is SDG Network free?

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

### Do Deer or SDG Network have ads?

Neither Deer nor SDG Network shows ads.

### Which is updated more often, Deer or SDG Network?

Deer ships an update every 9 days, and SDG Network every 9 days. Most recently, Deer was updated on September 22, 2026 and SDG Network on October 10, 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.*