# TMdrive vs Stud Finder

The clearest difference is in-app purchases: TMdrive at none against Stud Finder's 2. TMdrive also leads on iOS requirement (12.2 vs 26.0). Stud Finder's advantage is update cadence (monthly vs every 9 months). On price, ads and device support there is nothing between them.

Both are free to download. Stud Finder sells 2 in-app purchases, starting at $5.99 per 7 days. TMdrive asks for nothing beyond the download.

TMdrive ships an update every 9 months, Stud Finder monthly. The most recent releases landed on October 5, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | TMdrive | Stud Finder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (6 ratings)](https://appshunter.io/ios/app/stud-finder-ai-emf-detector/id6754987093/reviews)** |
| Number of ratings | — | **6** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 138 MB | 133 MB |
| Requires iOS | **12.2** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [東芝三菱電機産業システム株式会社(TMEIC)](https://appshunter.io/developer/1333406388) | [Emre Atik](https://appshunter.io/developer/1686436153) |

## What reviewers say

### TMdrive

[App page](https://appshunter.io/ios/app/tmdrive-e2-support/id1333406389)

**In-app purchases:** none


### Stud Finder

[App page](https://appshunter.io/ios/app/stud-finder-ai-emf-detector/id6754987093)

Transform your iPhone into a precision metal detector. Scan walls for studs, nails, screws, pipes, and wiring. Monitor EMF levels with real-time visual feedback and alerts.

**Highlights:** Automatic EMF sensor calibration, Real-time histogram display, Sound and vibration alerts, Built-in bubble level, Guided sensor location instructions, Scan for studs, nails, screws, pipes, wiring

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Days Free Trial Weekly PRO | $5.99 | per 7 days |
| Stud Monthly PRO | $12.99 | per month |


## Frequently asked questions

### Is TMdrive free?

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

### Is Stud Finder free?

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

### Do TMdrive or Stud Finder have ads?

Neither TMdrive nor Stud Finder shows ads.

### Which is updated more often, TMdrive or Stud Finder?

TMdrive ships an update every 9 months, and Stud Finder monthly. Most recently, TMdrive was updated on October 5, 2026 and Stud Finder on October 22, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*