# Smart Charge vs Stud Finder

The clearest difference is in-app purchases: Smart Charge at none against Stud Finder's 7. Smart Charge also leads on ads (none vs shown). On price, review sentiment, update cadence and device support there is nothing between them.

Both are free to download. Stud Finder sells 7 in-app purchases, starting at $3.99 per 7 days. Smart Charge asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 19, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Smart Charge | Stud Finder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (532 ratings)](https://appshunter.io/ios/app/stud-finder-metal-detector/id1667287490/reviews)** |
| Number of ratings | — | **532** |
| Positive reviews | 33.3% of reviews | **35.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 100 MB | 49 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Saascharge Inc](https://appshunter.io/developer/1496288861) | [Andrei Nemtsou](https://appshunter.io/developer/1612416096) |

## What reviewers say

### Smart Charge

[App page](https://appshunter.io/ios/app/smart-charge/id1553363658)

This app helps electric vehicle owners find and manage charging stations. It categorizes stations as public, semi-public, or private, catering to various user needs and access levels.

**Highlights:** Find public charging stations, Manage semi-public charging, Access private charging, Supports various station types, EV charging network information

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Stud Finder

[App page](https://appshunter.io/ios/app/stud-finder-metal-detector/id1667287490)

Easily detect metal objects like nails, screws, and wiring hidden within walls. Simply hold your phone against the surface and move it; the app will alert you with a beep and a visual indicator when metal is detected.

**Highlights:** Detects metal in walls, Finds nails, screws, wiring, Audible beep alert, Visual indicator, Easy to use

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $3.99 | per 7 days |
| Welcome One-Time Offer | $4.99 | per month |
| Welcome One-Time Offer | $5.99 | per month |
| Premium Monthly | $7.99 | per month |
| Premium Annual | $9.99 | per year |
| Premium Annual | $19.99 | per year |
| Lifetime Premium | $19.99 | one-time |

**What reviewers like**

- 👍 Works well for some users
- 👍 Accurate for some users
- 👍 Good tools
- 👍 Very easy to use

**What reviewers complain about**

- 🐛 Does not work on various iPhone models
- 🐛 Frequent non-functionality
- 🐛 App is a scam
- 🐛 Unwanted charges and subscriptions
- 🐛 Full of advertisements

**Reported bugs**

- Doesn't work on iPhone 15
- Doesn't work on iPhone 16 Pro Max
- Doesn't work on iPhone 16
- App shows 72 and beeps constantly
- App doesn't detect studs even when held over them

**Requested features**

- Specify compatible iPhone models
- Clearer cancellation process for subscriptions


## Frequently asked questions

### Is Smart Charge free?

Smart Charge 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 Smart Charge or Stud Finder have ads?

Stud Finder shows ads; Smart Charge does not.

### Which is updated more often, Smart Charge or Stud Finder?

Smart Charge ships an update every 2 months, and Stud Finder every 2 months. Most recently, Smart Charge was updated on October 19, 2026 and Stud Finder on October 30, 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.*