# IRS vs Stud Finder Pro

The clearest difference is rating: Stud Finder Pro at 4.5 against IRS's 3.0. Stud Finder Pro also leads on review sentiment (40% vs 0%) and update cadence (every 5 days vs every 3 months). IRS's advantage is in-app purchases (none vs 3) and iOS requirement (10.0 vs 16). On price, ads and device support there is nothing between them.

Both are free to download. Stud Finder Pro sells 3 in-app purchases, starting at $2.99 per 7 days. IRS asks for nothing beyond the download.

Stud Finder Pro holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: Stud Finder Pro has 192 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 0% of IRS's written reviews are positive against 40% of Stud Finder Pro's.

IRS ships an update every 3 months, Stud Finder Pro every 5 days. The most recent releases landed on October 23, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | IRS | Stud Finder Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (6 ratings)](https://appshunter.io/ios/app/irs/id543202940/reviews) | **[4.5 (192 ratings)](https://appshunter.io/ios/app/stud-finder-pro-wall-scanner/id6757309084/reviews)** |
| Number of ratings | 6 | **192** |
| Positive reviews | 0.0% of reviews | **40.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 21 MB |
| Requires iOS | **10.0** | 16 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Online Supporter B.V.](https://appshunter.io/developer/640512746) | [KnotSmith Ltd.](https://appshunter.io/developer/1817434588) |

## What reviewers say

### IRS

[App page](https://appshunter.io/ios/app/irs/id543202940)

This app helps sugar beet growers and knowledge intermediaries calculate harvest losses. It allows users to save and review calculations, and access the latest news from the research center.

**Highlights:** Calculate harvest losses, Save and review calculations, Access latest news, Sugar beet cultivation insights

**Features:** macOS Compatibility

**In-app purchases:** none


### Stud Finder Pro

[App page](https://appshunter.io/ios/app/stud-finder-pro-wall-scanner/id6757309084)

Transform your iPhone into a versatile wall scanner. Detect studs, pipes, wires, and rebar with real-time feedback. Get expert guidance on drill bits and anchors, log your projects, and ensure precise alignment with built-in level tools.

**Highlights:** Real-time stud, pipe, and wire detection, Drill bit and anchor recommendations, Construction photo logging with watermarks, Precision level tools (bubble and laser grid), Offline functionality

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stud Finder Pro 1 Week | $2.99 | per 7 days |
| Stud Finder Pro 1 Month | $5.99 | per month |
| Stud Finder Pro 1 Year | $7.99 | per year |


## Frequently asked questions

### Is IRS free?

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

### Is Stud Finder Pro free?

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

### Which has better reviews, IRS or Stud Finder Pro?

Stud Finder Pro is rated higher. IRS averages 3.0 out of 5 from 6 ratings, while Stud Finder Pro averages 4.5 from 192 ratings.

### Do IRS or Stud Finder Pro have ads?

Neither IRS nor Stud Finder Pro shows ads.

### Which is updated more often, IRS or Stud Finder Pro?

IRS ships an update every 3 months, and Stud Finder Pro every 5 days. Most recently, IRS was updated on October 23, 2026 and Stud Finder Pro on October 28, 2026.

---

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