# SupWriter vs Grubby AI

The clearest difference is in-app purchases: Grubby AI at none against SupWriter's 6. SupWriter's advantage is update cadence (weekly vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SupWriter sells 6 in-app purchases, starting at $9.99 per month. Grubby AI asks for nothing beyond the download.

SupWriter ships an update weekly, Grubby AI every 3 weeks. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | SupWriter | Grubby AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (2 ratings)](https://appshunter.io/ios/app/grubby-ai-write-like-me/id6810717606/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 48 MB | 3 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shriprasanna Barani](https://appshunter.io/developer/1868031624) | [David Conner](https://appshunter.io/developer/6790194682) |

## What reviewers say

### SupWriter

[App page](https://appshunter.io/ios/app/supwriter-ai-humanizer/id6757840445)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SupWriter Basic Monthly | $9.99 | per month |
| SupWriter Pro Monthly | $19.99 | per month |
| SupWriter Ultra Monthly | $39.99 | per month |
| SupWriter Basic Annual | $59.99 | per year |
| SupWriter Pro Annual | $119.99 | per year |
| SupWriter Ultra Annual | $239.99 | per year |


### Grubby AI

[App page](https://appshunter.io/ios/app/grubby-ai-write-like-me/id6810717606)

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

**In-app purchases:** none


## Frequently asked questions

### Is SupWriter free?

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

### Is Grubby AI free?

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

### Do SupWriter or Grubby AI have ads?

Neither SupWriter nor Grubby AI shows ads.

### Which is updated more often, SupWriter or Grubby AI?

SupWriter ships an update weekly, and Grubby AI every 3 weeks. Most recently, SupWriter was updated on October 31, 2026 and Grubby AI on November 6, 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.*