# SPIN Motion vs Grubby

The clearest difference is rating: SPIN Motion at 5.0 against Grubby's 4.3. SPIN Motion also leads on monetization model (free vs freemium). Grubby's advantage is ratings volume (6 vs 1) and iOS requirement (15.1 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SPIN Motion holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Grubby has 6 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | SPIN Motion | Grubby |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/spin-motion/id6780548507/reviews)** | [4.3 (6 ratings)](https://appshunter.io/ios/app/grubby-ai-humanizer-and-writer/id6800497079/reviews) |
| Number of ratings | 1 | **6** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | **Free** | Freemium |
| Size | 7 MB | 43 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Smart Products Infrastructure Network, Inc.](https://appshunter.io/developer/6796277674) | [Grubby AI](https://appshunter.io/developer/6800497081) |

## What reviewers say

### SPIN Motion

[App page](https://appshunter.io/ios/app/spin-motion/id6780548507)

This application uses AI and smart tags to track, manage, and automate the lifecycle of physical products and assets. It provides real-time intelligence on asset location, responsibility, and next steps, even for items within closed containers.

**Highlights:** AI-powered asset tracking, Smart tag integration (NFC, UHF, QR), Real-time intelligence layer, Automated movement and service tracking, High-volume scanning capabilities, Asset lifecycle management

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

**In-app purchases:** none


### Grubby

[App page](https://appshunter.io/ios/app/grubby-ai-humanizer-and-writer/id6800497079)

Transform AI-generated text into natural-sounding prose and enhance your learning with study tools. Condense information, create flashcards, and generate quizzes from your writing.

**Highlights:** AI text humanization, Multiple rewrite modes, Naturalness score, Article summarizer, Flashcard generator, Quiz creator, Organized history

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

**In-app purchases:** none


## Frequently asked questions

### Is SPIN Motion free?

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

### Is Grubby free?

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

### Which has better reviews, SPIN Motion or Grubby?

SPIN Motion is rated higher. SPIN Motion averages 5.0 out of 5 from 1 ratings, while Grubby averages 4.3 from 6 ratings.

### Do SPIN Motion or Grubby have ads?

Neither SPIN Motion nor Grubby shows ads.

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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.*