# Stud Finder Detector vs Z

The clearest difference is ads: Z at none against Stud Finder Detector's shown. Stud Finder Detector's advantage is iOS requirement (16.0 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Stud Finder Detector sells 2 in-app purchases, starting at $3.99 per 7 days and Z sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Stud Finder Detector ships an update every 2 weeks, Z every 3 weeks. The most recent releases landed on October 27, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Stud Finder Detector | Z |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (723 ratings)](https://appshunter.io/ios/app/stud-finder-detector/id6451046029/reviews)** | — |
| Number of ratings | **723** | — |
| Positive reviews | 30.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 11 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [KARLIE ALEXIS KOWALSKA](https://appshunter.io/developer/6806982191) | [Zoltan Homorodi](https://appshunter.io/developer/1583313543) |

## What reviewers say

### Stud Finder Detector

[App page](https://appshunter.io/ios/app/stud-finder-detector/id6451046029)

Easily locate wall studs for home improvement projects. This app uses your iPhone to quickly and accurately detect studs, eliminating guesswork for mounting TVs, shelves, or artwork. It's designed for both DIY enthusiasts and experienced users.

**Highlights:** Instant stud detection, Highly accurate results, Ideal for DIY projects, No extra hardware required, User-friendly interface

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| Pro | $14.99 | one-time |


### Z

[App page](https://appshunter.io/ios/app/z-calc/id6808435910)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fraction Unlock | $0.99 | one-time |
| Units Unlock | $0.99 | one-time |
| Graph Unlock | $0.99 | one-time |
| Quadratic Solver Unlock | $0.99 | one-time |


## Frequently asked questions

### Is Stud Finder Detector free?

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

### Is Z free?

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

### Do Stud Finder Detector or Z have ads?

Stud Finder Detector shows ads; Z does not.

### Which is updated more often, Stud Finder Detector or Z?

Stud Finder Detector ships an update every 2 weeks, and Z every 3 weeks. Most recently, Stud Finder Detector was updated on October 27, 2026 and Z on October 29, 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.*