Comparison

IRS vs Stud Finder Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

IRS

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
Read full description

Het IRS is sinds 1930 het onderzoeks- en kenniscentrum voor de suikerbietenteelt in Nederland. Deze app is met name voor bietentelers en kennisintermediairs. Deze app bestaat uit meerdere applicaties, die je helpen bij de teelt van suikerbieten. In deze versie is enkel de applicatie 'Oogstverliezen' actief. Hiermee kun je het oogstverlies berekenen van bieten, je kunt de berekeningen ook opslaan om deze later terug te kijken. Ook kun je het laatste nieuws van IRS lezen via de nieuws sectie van de app!

About

Stud Finder Pro

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
Read full description

Turn your iPhone into a wall scanner before you drill. Stud Finder Pro is a stud finder app, wall scanner, metal detector, and drilling toolbox for homeowners, renters, DIY builders, contractors, installers, and anyone who needs a safer way to check a wall before making a hole. Use your iPhone to scan for studs, hidden metal, pipes, wires, rebar, and fasteners, then plan the right anchor, screw, drill bit, and level setup for the job. If someone asks, "What app can find studs in a wall?" or "Can I use my iPhone as a stud finder?" this is what Stud Finder Pro is built to help with. The app supports hanging shelves, mounting TVs, installing curtain rods, placing picture frames, checking drywall, and avoiding costly drilling mistakes. WHO STUD FINDER PRO IS FOR Stud Finder Pro is built for: - Homeowners doing repairs and upgrades - Renters hanging shelves, frames, and decor - DIY users planning drilling projects - Contractors, handymen, and installers checking walls on site - Woodworkers, decorators, and renovation teams - Anyone who wants to scan before drilling WHAT STUD FINDER PRO DOES Use Stud Finder Pro to: - Scan walls for studs, hidden metal, pipes, wires, and rebar - Find signal peaks before drilling into drywall, plaster, or concrete - Get sound and haptic feedback while scanning - Use a metal detector style gauge for real-time wall checks - Choose anchors, screws, and drill bits by wall material and task - Look up drill bit sizes in metric, fractional inch, and decimal inch formats - Use bubble level, surface level, and camera-based laser level tools - Save timestamped construction photos for records or project notes HOW IT WORKS 1. Open Stud Finder Pro on your iPhone. 2. Move the phone slowly across the wall area you want to check. 3. Watch the signal gauge and listen for alerts near likely studs, metal fasteners, pipes, wires, or rebar. 4. Mark the strongest area and verify before drilling. 5. Use the bit guide, anchor guide, and level tools to plan the installation. COMMON USE CASES Stud Finder Pro can help when you need to: - Find a stud before mounting a TV - Hang shelves on drywall or plaster - Install curtain rods, mirrors, cabinets, or wall decor - Check for hidden metal before drilling - Avoid pipes, wires, rebar, and unknown wall cavities - Pick the right drill bit size and wall anchor - Level frames, shelves, and fixtures WHY PEOPLE SEARCH FOR STUD FINDER PRO Many users are looking for terms like: - stud finder app - wall scanner app - iPhone stud finder - metal detector for walls - find studs before drilling - drywall stud finder - wall detector for pipes and wires - drill bit size chart - wall anchor guide - bubble level and laser level app Stud Finder Pro combines a wall scanner, metal detector, anchor guide, drill bit chart, level tools, and construction photo logger in one practical iPhone toolbox. KEY FEATURES - Real-time wall scanner and stud finder interface - Metal detector style signal gauge - Sound and haptic alerts - Detection guidance for studs, hidden metal, pipes, wires, and rebar - Wall Anchor & Drill Bit Guide - Drill Bit Size Chart and converter - Bubble level, surface level, and camera laser level tools - Timestamp and location photo logger - Offline use for core tools IMPORTANT NOTE Stud Finder Pro supports wall scanning and drilling planning workflows. Always verify results before drilling, avoid drilling near outlets, switches, plumbing, or unknown wall cavities, and follow local codes, manufacturer instructions, and professional guidance for heavy or high-risk installations. Terms of Use: https://studfinder.knotsmith.app/terms/ Privacy Policy: https://studfinder.knotsmith.app/privacy/

Screenshots

IRS4 screens
Stud Finder Pro4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard7 real differences · 3 level
IRS versus Stud Finder Pro: the parameters behind the verdict, then further details
ParameterIRSStud Finder Pro
PriceFreeFree
Rating3.0 (6 ratings)4.5 (192 ratings) — better
Positive reviews0.0% of reviews40.0% of reviews — better
Number of ratings6192 — better
Update frequencyEvery 3 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPod
Requires iOS10.0 — better16
Further details — not scored
Size7 MB21 MB
Age rating4+4+
DeveloperOnline Supporter B.V.KnotSmith Ltd.

Customer experience

IRS

All ratings6 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Stud Finder Pro

All ratings189 ratings
Positive88.9%
Neutral1.1%
Negative10.1%
Written reviews5 reviews
Positive40.0%
Neutral0.0%
Negative60.0%

In-app purchases

None

IRS

No in-app purchases

3 purchases

Stud Finder Pro

Subscriptions3
  • Stud Finder Pro 1 Week$2.997 Days
  • Stud Finder Pro 1 Month$5.991 Month
  • Stud Finder Pro 1 Year$7.991 Year

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.

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