The right DIY app depends on the job. Sometimes you need to find hidden metal before drilling. Sometimes you need to locate studs behind drywall. Sometimes you just need to know exactly how much concrete to buy. The best setup is not one generic app. It is the most specific tool for the task in front of you.
Use Metal Detector Finder when you need a broader scan for hidden metal, studs, or pipes. Use Stud Finder Plus when your job is specifically finding studs before drilling. Use Concrete Calculator & Cost Est when you need bag counts, volume, and cost estimates before you pour.
Best for: Finding hidden metal, studs, and pipes
Best first pick when you need a practical scan before drilling, mounting, or cutting and want to use the sensor already in your iPhone.
Watch-out: It is strongest for metal detection, not for quantity estimation or project budgeting.
Best for: Zeroing in on wall studs before you drill
Best when your job is specifically finding studs behind drywall and you want a tool framed around that exact task.
Watch-out: Narrower than a general metal detector if you also care about pipes, conduit, or buried metal.
Best for: Knowing how much concrete and how many bags to buy
Best when the job is planning a slab, post hole, footing, or patio and avoiding wasted trips or wasted bags.
Watch-out: This solves jobsite math, not wall scanning or hidden-object detection.
Start with the real task. Are you scanning before drilling, finding studs, or planning material quantities?
| Job | Best starting tool | Why | Next move |
|---|---|---|---|
| Scan a wall for metal, studs, or pipes | Metal Detector Finder | Best broader detection tool when you are not only looking for one stud. | Read the metal detector guide |
| Find a stud before hanging or mounting | Stud Finder Plus | Best when the task is specifically locating studs behind drywall. | Read the stud finder guide |
| Calculate concrete bags and cost before a pour | Concrete Calculator & Cost Est | Best when the risk is under-ordering, over-ordering, or making another store trip. | Read the concrete app guide |
Pick Metal Detector Finder if you want the broadest “scan before you drill” utility.
Pick Stud Finder Plus if your job is specifically finding studs in a wall.
Pick Concrete Calculator & Cost Est if the problem is material math, bag counts, and project cost.
If the problem is wall scanning and hidden metal, start with Stud Finder Plus or Metal Detector Finder depending on whether you want a stud-specific tool or a broader metal-detection tool.
Yes, compatible iPhones include a magnetometer sensor that can detect changes in magnetic fields. Apps like Metal Detector Finder and Stud Finder Plus use that sensor to help locate fasteners and metal behind surfaces.
Concrete Calculator & Cost Est is the strongest fit in this cluster when you need cubic volume, bag counts, and cost estimates for slabs, footings, post holes, and similar pours.
Usually the right answer depends on the job. Scanning walls and calculating concrete are different tasks, so the better setup is using the most specific tool for the specific job rather than forcing one app to do everything.