Comparison

Stud Finder & Metal Detector vs Readius

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

Head to head
About

Stud Finder & Metal Detector

Easily locate hidden ferrous metal objects like studs, screws, and nails behind various surfaces. This tool uses your phone's magnetic field sensor to provide accurate detection with visual, audio, and tactile alerts. It also offers detailed magnetic field data for advanced analysis.

Highlights
  • Detects ferrous metal objects
  • Analyzes magnetic field changes
  • Visual, audio, and tactile alerts
  • Displays magnetic field data (µT)
  • Measurement history
  • Sensor location guidance
Read full description

This app will help you find ferrous metal objects such as studs, screws, and nails hidden in or behind wood, drywall, OSB, plywood, plaster, etc. As you scan over a surface with your phone, a smart algorithm analyzes the smallest changes in the magnetic field and detects hidden ferrous objects with unprecedented accuracy. Intuitive visual, audio, and tactile indicators will notify you when a ferrous object is detected. In addition, the app displays the absolute value of the magnetic field in microtesla (µT), the dynamics of change, and the history of measurement for solving more complex problems. Tips and Tricks If your device has an external case with metal or magnetic elements, please remove it before using this app. You can further improve the detection accuracy by first determining the position of the magnetometer sensor inside of your phone. To do this, take a small metal object (for example, a screw) and slowly move along the back surface of your phone, continuously monitoring the absolute value indicator of the magnetic field. The sensor is located at the position with the maximum indicator value. Be careful not to touch and scratch the phone with the screw. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://n17dev.web.app/stud-finder-v2/policy.html

About

Readius

Features
Read full description

全数字掌上式彩色多普勒超声显像仪 本应用配合Readius L8、C3、C6探头使用,在做医疗决定之前,还应寻求医生的建议。

Screenshots

Stud Finder & Metal Detector4 screens
Readius4 screens

Verdict

The call

The clearest difference is in-app purchases: Readius at none against Stud Finder & Metal Detector's 3. On price, update cadence, 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 & Metal Detector sells 3 in-app purchases, starting at $2.99 per month. Readius asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

Scorecard1 real difference · 9 level
Stud Finder & Metal Detector versus Readius: the parameters behind the verdict, then further details
ParameterStud Finder & Metal DetectorReadius
PriceFreeFree
Rating4.3 (360 ratings) — better—
Positive reviews16.7% of reviews—
Number of ratings360 — better—
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.014
Further details — not scored
Size12 MB418 MB
Age rating4+17+
DeveloperAndrey IvankinShantou Institute of Ultrasonic Inst. Co., Ltd.

Bugs and requests

Stud Finder & Metal Detector

Reported bugs

2 issues
  • Ads appear at critical moments
  • Doesn't find anything

Requested features

2 requests
  • More of an x-ray view
  • Needs more work

Readius

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Stud Finder & Metal Detector

Subscriptions1
  • Premium Monthly Subscription3 Days trial$2.991 Month
One-time2
  • Stud Finder: Pro Version$3.99
  • Premium Lifetime Subscription$6.99
None

Readius

No in-app purchases

Questions

Is Stud Finder & Metal Detector free?
Stud Finder & Metal Detector is free to download, with in-app purchases available.
Is Readius free?
Readius is free to download, with no in-app purchases.
Do Stud Finder & Metal Detector or Readius have ads?
Neither Stud Finder & Metal Detector nor Readius shows ads.
Which is updated more often, Stud Finder & Metal Detector or Readius?
Stud Finder & Metal Detector ships an update every 2 months, and Readius every 2 months. Most recently, Stud Finder & Metal Detector was updated on November 7, 2026 and Readius on November 3, 2026.

Other comparisons