# Rhizo vs SFD

The clearest difference is in-app purchases: Rhizo at none against SFD's 1. SFD's advantage is update cadence (every 8 days vs every 7 months). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. SFD sells 1 one-off in-app purchase. Rhizo asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Rhizo against 5.0 for SFD. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Rhizo ships an update every 7 months, SFD every 8 days. The most recent releases landed on September 13, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Rhizo | SFD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/rhizo-freeform-mind-map/id6759258516/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/sfd-write-it-bad/id6778871291/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 8 days** |
| Monetization | Paid | Paid |
| Size | 19 MB | 3 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [现兴 闫](https://appshunter.io/developer/1875449831) | [Daniel James Kinney-Spears](https://appshunter.io/developer/6778614359) |

## What reviewers say

### Rhizo

[App page](https://appshunter.io/ios/app/rhizo-freeform-mind-map/id6759258516)

This app offers a fluid and tactile mind-mapping experience, allowing users to capture and organize thoughts without forced structure. It prioritizes a minimalist interface and seamless interaction for a stress-free creative process. Ideas can be exported in various formats, ensuring data ownership.

**Highlights:** Kinetic thought nodes with physics simulation, Minimalist gestures for idea creation and connection, Infinite canvas with auto-adaptive nodes, Seamless export to JSON and PNG, Local data storage for absolute privacy, Ad-free and no in-app purchases

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

**In-app purchases:** none


### SFD

[App page](https://appshunter.io/ios/app/sfd-write-it-bad/id6778871291)

This app helps you overcome writer's block by forcing you to write a first draft without the ability to edit or reread. It uses timed bursts and nudges to keep you moving forward, allowing you to flag sections for later revision.

**Highlights:** Forward-only writing, Timed writing bursts, Cursor nudges for stalls, Flagging sections for revision, Plain text export, Offline functionality

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SFD Habit Tracking | $0.99 | one-time |


## Frequently asked questions

### Is Rhizo free?

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

### Is SFD free?

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

### Which has better reviews, Rhizo or SFD?

Rhizo and SFD are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Rhizo or SFD have ads?

Neither Rhizo nor SFD shows ads.

### Which is updated more often, Rhizo or SFD?

Rhizo ships an update every 7 months, and SFD every 8 days. Most recently, Rhizo was updated on September 13, 2026 and SFD on September 24, 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.*