# String Theory! vs Rhizo

The clearest difference is in-app purchases: Rhizo at none against String Theory!'s 3. Rhizo also leads on ads (none vs shown). String Theory!'s advantage is iOS requirement (15.1 vs 17.0). On price and device support there is nothing between them.

Both are free to download. String Theory! sells 3 in-app purchases, starting at $2.99 per 7 days. Rhizo asks for nothing beyond the download.

## The numbers

| Metric | String Theory! | Rhizo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rhizo-freeform-mind-map/id6759258516/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | — | Every 7 months |
| Monetization | — | Paid |
| Size | 56 MB | 19 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Synthify Inc](https://appshunter.io/developer/1089257745) | [现兴 闫](https://appshunter.io/developer/1875449831) |

## What reviewers say

### String Theory!

[App page](https://appshunter.io/ios/app/string-theory/id6757779491)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Yearly | $24.99 | per year |
| One Time | $29.99 | one-time |


### 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


## Frequently asked questions

### Is String Theory! free?

String Theory! is free to download, with in-app purchases available.

### Is Rhizo free?

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

### Do String Theory! or Rhizo have ads?

String Theory! shows ads; Rhizo does not.

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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.*