# GDO System™ vs Stud Finder & Metal Detector

The clearest difference is rating: Stud Finder & Metal Detector at 4.3 against GDO System™'s 1.4. GDO System™'s advantage is in-app purchases (none vs 3) and update cadence (every 10 days vs every 2 months). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Stud Finder & Metal Detector sells 3 in-app purchases, starting at $2.99 per month. GDO System™ asks for nothing beyond the download.

Stud Finder & Metal Detector holds the better App Store score, 4.3 against 1.4. Both are backed by a comparable volume of ratings — 1.3K and 360 respectively. Written reviews point the same way: 9% of GDO System™'s written reviews are positive against 17% of Stud Finder & Metal Detector's.

GDO System™ ships an update every 10 days, Stud Finder & Metal Detector every 2 months. The most recent releases landed on November 4, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | GDO System™ | Stud Finder & Metal Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.4 (1.3K ratings)](https://appshunter.io/ios/app/gdo-system/id1097529087/reviews) | **[4.3 (360 ratings)](https://appshunter.io/ios/app/stud-finder-and-metal-detector/id1590127973/reviews)** |
| Number of ratings | **1.3K** | 360 |
| Positive reviews | 9.4% of reviews | **16.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 45 MB | 12 MB |
| Requires iOS | **12.1** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [One World Technologies, Inc](https://appshunter.io/developer/915404170) | [Andrey Ivankin](https://appshunter.io/developer/1615973131) |

## What reviewers say

### GDO System™

[App page](https://appshunter.io/ios/app/gdo-system/id1097529087)

Control your garage door opener remotely from any internet-connected location. This app allows for remote opening and closing, customizable alerts, and integration with various accessories like fans, speakers, and parking assist modules.

**Highlights:** Remote garage door monitoring and control, Open and close garage door remotely, Customizable door status alerts, Control variable speed fan, Bluetooth speaker functionality, Laser park assist integration, Electric cord reel control

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Works as advertised
- 🔒 Robust security features
- 👍 Quiet and reliable opener
- 🔋 Backup battery works well

**What reviewers complain about**

- 🐛 Buggy and unreliable app
- 👎 App constantly crashes or logs users out
- 👎 App has not been updated in years
- 🔒 No way to override keypad lock from app
- 👎 Delayed or no response from app commands

**Reported bugs**

- App unable to connect to WiFi or GDO
- App forgets login credentials
- Inconsistent door status reporting
- Camera and accessory connectivity issues

**Requested features**

- Integrate with smart home platforms (e.g., HomeKit)
- Add multiple user support
- Improve notification and status tracking
- Provide better in-app troubleshooting and support


### Stud Finder & Metal Detector

[App page](https://appshunter.io/ios/app/stud-finder-and-metal-detector/id1590127973)

Easily locate hidden ferrous metal objects like studs, screws, and nails behind various surfaces. This tool uses your phone's magnetic field sensor to provide accurate detection with visual, audio, and tactile alerts. It also offers detailed magnetic field data for advanced analysis.

**Highlights:** Detects ferrous metal objects, Analyzes magnetic field changes, Visual, audio, and tactile alerts, Displays magnetic field data (µT), Measurement history, Sensor location guidance

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Subscription | $2.99 | per month |
| Stud Finder: Pro Version | $3.99 | one-time |
| Premium Lifetime Subscription | $6.99 | one-time |

**What reviewers like**

- 👍 Best stud finder among tested apps
- 👍 Works as advertised
- 👍 Able to find drywall screws
- 👍 Sensitive with slow, continuous movement

**What reviewers complain about**

- 😞 Useless app
- 😞 Cannot use it
- 😞 Waste of time
- 😞 Doesn't work
- 😞 Not even close to working

**Reported bugs**

- Ads appear at critical moments
- Doesn't find anything

**Requested features**

- More of an x-ray view
- Needs more work


## Frequently asked questions

### Is GDO System™ free?

GDO System™ is free to download, with no in-app purchases.

### Is Stud Finder & Metal Detector free?

Stud Finder & Metal Detector is free to download, with in-app purchases available.

### Which has better reviews, GDO System™ or Stud Finder & Metal Detector?

Stud Finder & Metal Detector is rated higher. GDO System™ averages 1.4 out of 5 from 1.3K ratings, while Stud Finder & Metal Detector averages 4.3 from 360 ratings.

### Do GDO System™ or Stud Finder & Metal Detector have ads?

Neither GDO System™ nor Stud Finder & Metal Detector shows ads.

### Which is updated more often, GDO System™ or Stud Finder & Metal Detector?

GDO System™ ships an update every 10 days, and Stud Finder & Metal Detector every 2 months. Most recently, GDO System™ was updated on November 4, 2026 and Stud Finder & Metal Detector on November 7, 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.*