# SupplyPro GM vs SDG Rotor

The clearest difference is review sentiment: SDG Rotor at 100% against SupplyPro GM's 50%. SDG Rotor also leads on rating (5.0 vs 3.8) and update cadence (every 2 days vs every 5 weeks). SupplyPro GM's advantage is ratings volume (12 vs 1) and iOS requirement (10.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

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

SDG Rotor holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: SupplyPro GM has 12 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of SupplyPro GM's written reviews are positive against 100% of SDG Rotor's.

SupplyPro GM ships an update every 5 weeks, SDG Rotor every 2 days. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | SupplyPro GM | SDG Rotor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (12 ratings)](https://appshunter.io/ios/app/supplypro-gm/id1498263516/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sdg-rotor/id6480425498/reviews)** |
| Number of ratings | **12** | 1 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Monetization | Free | Free |
| Size | 38 MB | 46 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +17 |
| Developer | [Hyphen Solutions, LLC](https://appshunter.io/developer/850581992) | [Stephan Monette](https://appshunter.io/developer/1299469285) |

## What reviewers say

### SupplyPro GM

[App page](https://appshunter.io/ios/app/supplypro-gm/id1498263516)

This construction management tool helps suppliers streamline operations. It offers features for managing business, customers, inventory, finances, and field tasks. The app provides offline access and integrates with accounting software.

**Highlights:** Business dashboards, Inventory management, Invoicing and payment processing, Mobile forms, Route planning, Workflow automation, Offline access

**Features:** macOS Compatibility

**In-app purchases:** none


### SDG Rotor

[App page](https://appshunter.io/ios/app/sdg-rotor/id6480425498)

This tool helps high-performance vehicle owners ensure the safety of their supercharger rotor RPM. It allows users to input supercharger details and engine RPM for instant safety checks, leveraging expert knowledge in performance vehicles.

**Highlights:** Supercharger rotor RPM safety checks, Input supercharger details and engine RPM, Instant safety assessments, Expertise in high-performance vehicles, User-friendly design, Supports global units and standards

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

**In-app purchases:** none


## Frequently asked questions

### Is SupplyPro GM free?

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

### Is SDG Rotor free?

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

### Which has better reviews, SupplyPro GM or SDG Rotor?

SDG Rotor is rated higher. SupplyPro GM averages 3.8 out of 5 from 12 ratings, while SDG Rotor averages 5.0 from 1 ratings.

### Do SupplyPro GM or SDG Rotor have ads?

Neither SupplyPro GM nor SDG Rotor shows ads.

### Which is updated more often, SupplyPro GM or SDG Rotor?

SupplyPro GM ships an update every 5 weeks, and SDG Rotor every 2 days. Most recently, SupplyPro GM was updated on October 24, 2026 and SDG Rotor on October 23, 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.*