# CardKeep vs Stud Finder

The clearest difference is price: Stud Finder at Free against CardKeep's $2.99. Stud Finder also leads on update cadence (every 5 months vs every 28 months). CardKeep's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

Stud Finder is free to download; CardKeep costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CardKeep ships an update every 28 months, Stud Finder every 5 months. The most recent releases landed on October 7, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | CardKeep | Stud Finder |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/stud-finder-metal-detector/id6751178603/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 28 months | **Every 5 months** |
| Monetization | — | Ad-supported |
| Size | 0 MB | 9 MB |
| Requires iOS | 17.5 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jonathan Judelson](https://appshunter.io/developer/813495416) | [Cao Tran](https://appshunter.io/developer/1346991351) |

## What reviewers say

### CardKeep

[App page](https://appshunter.io/ios/app/cardkeep/id6503636629)

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

**In-app purchases:** none


### Stud Finder

[App page](https://appshunter.io/ios/app/stud-finder-metal-detector/id6751178603)

Transform your iPhone into a precise wall scanner. Easily locate studs, pipes, wires, and other hidden metal objects for DIY projects and home improvements. Offers multiple detection modes and adjustable sensitivity for accurate results.

**Highlights:** All-in-one wall scanner, Detects studs, pipes, wires, and more, 4 distinct detection modes, Adjustable sensitivity, Clear visual and audio alerts, Uses iPhone's magnetometer

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CardKeep free?

CardKeep costs $2.99, with no in-app purchases.

### Is Stud Finder free?

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

### Do CardKeep or Stud Finder have ads?

Stud Finder shows ads; CardKeep does not.

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

CardKeep ships an update every 28 months, and Stud Finder every 5 months. Most recently, CardKeep was updated on October 7, 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.*