Comparison

Protractor for Angle Measuring vs Resonance

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

Head to head
About

Protractor for Angle Measuring

Transform your iPhone into a precision angle measuring tool. Easily measure angles in real-time using touch or camera modes, and even analyze angles in existing photos. Customize your tools for a seamless experience.

Highlights
  • Real-time angle measurement
  • Touch and camera modes
  • Measure angles in photos
  • Simultaneous unlimited angle measurement
  • Tool color customization
  • Plumb bob pendulum for tilt
Features
Read full description

Your pocket angle expert! Transform your iPhone into a precision tool for real-time angle measurement. Simply tap, snap, and assess angles effortlessly with our intuitive touch and camera modes. Measure unlimited angles simultaneously, customize tools, and enjoy the perfect blend of accuracy and simplicity. Ideal for architects or anyone seeking quick, reliable measurements. Embrace the power of Protractor for fast, on-the-go angle assessments! Key Features: • Touch Measure: Tap the screen to set angles (use the camera view). • Plumb Bob Pendulum: Perfect for determining tilt (calibrate for accuracy). • Angle Measurement in Photos and from Camera. • Simultaneous Measurement of Unlimited Angles. • Tool Color Customization for Visual Convenience. Privacy Policy: https://appliks.com/privacy-policy ​​Terms of Use: https://appliks.com/terms-of-use

About

Resonance

Transform your smartphone into a professional vibration analysis tool. Measure, record, and analyze vibrations in real-time with spectral analysis, on-site and quickly. Supports external Bluetooth sensors and offers powerful analysis tools for various applications.

Highlights
  • Real-time spectral analysis
  • Power Spectral Density (PSD) and FFT
  • Bluetooth sensor support
  • Damping ratio estimation
  • Export data as CSV
  • Generate PDF reports
Features
Read full description

Resonance turns your smartphone into a professional vibration analysis instrument. Measure, record, and analyze vibrations with real-time spectral analysis — on-site, in seconds. Real-Time Analysis: • Live accelerometer streaming with instant frequency domain charts • Power Spectral Density (PSD) and FFT analysis • Configurable window functions (Hanning, and more) • Velocity and displacement computed from acceleration data Bluetooth Sensor Support: • Connect external Bluetooth accelerometers • Compatible with Witmotion sensors • Seamless pairing and real-time data streaming Powerful Tools: • Damping ratio estimation • Customizable units • Adjustable recording delay and duration Export & Share: • Export raw data as CSV for further analysis • Generate professional PDF reports • Save and revisit past recordings on-device Versatile Applications: • Assess suspended floor serviceability • Measure fundamental periods of structures • Diagnose problematic floor or machinery vibrations • Detect resonance issues • Aid in isolator mount design and validation • Vehicle NVH and HVAC vibration diagnostics Perfect for engineers, architects, technicians, researchers, and hobbyists seeking vibration analysis on the go. Available in English, Spanish, German, French, Portuguese, Russian, Japanese, Chinese (Simplified & Traditional). Terms of Use (EULA): https://resonance.kodapro.dev/eula Disclaimer: Use of the Resonance Vibration Analysis app is at your own risk. The app is provided on an AS-IS basis. We do not assume responsibility for decisions made by users based solely on information provided by this app.

Screenshots

Protractor for Angle Measuring4 screens
Resonance4 screens

Verdict

The call

The clearest difference is ads: Resonance at none against Protractor for Angle Measuring's shown. Resonance also leads on rating (5.0 vs 4.5). Protractor for Angle Measuring's advantage is update cadence (every 2 weeks vs every 4 months) and ratings volume (1.1K vs 1). On price, in-app purchases, monetization model 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. Protractor for Angle Measuring sells 5 in-app purchases, starting at $0.99 per 7 days and Resonance sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Resonance holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Protractor for Angle Measuring has 1.1K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Protractor for Angle Measuring ships an update every 2 weeks, Resonance every 4 months. The most recent releases landed on October 27, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 6 level
Protractor for Angle Measuring versus Resonance: the parameters behind the verdict, then further details
ParameterProtractor for Angle MeasuringResonance
PriceFreeFree
Rating4.5 (1.1K ratings)5.0 (1 ratings) — better
Positive reviews49.4% of reviews—
Number of ratings1.1K — better1
Update frequencyEvery 2 weeks — betterEvery 4 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.615.6 — better
Further details — not scored
Size112 MB70 MB
Age rating4+4+
DeveloperAppLiks Sp. z O.O.Benjamin Probett

Customer experience

Protractor for Angle Measuring

All ratings1,023 ratings
Positive88.5%
Neutral4.6%
Negative6.9%
Written reviews77 reviews
Positive49.4%
Neutral5.2%
Negative45.5%

Resonance

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Protractor for Angle Measuring

Reported bugs

2 issues
  • Protractor tool is hard to use and requires multiple tries
  • Angle measurements do not match real-world angles

Requested features

3 requests
  • Add more instructions and guidance for using the protractor tool
  • Improve the zoom functionality when measuring angles in photos
  • Enhance the accuracy of angle measurements

Resonance

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

Protractor for Angle Measuring

Subscriptions5
  • Weekly Access$0.997 Days
  • Weekly Access with Trial3 Days trial$1.997 Days
  • Weekly Access$1.997 Days
Show 2 more
  • Yearly Access$3.991 Year
  • Yearly Access$4.991 Year
3 purchases

Resonance

Subscriptions2
  • Monthly Premium Subscription$1.991 Month
  • Yearly Premium Subscription$6.991 Year
One-time1
  • Lifetime Access - Pro Features$6.99

Questions

Is Protractor for Angle Measuring free?
Protractor for Angle Measuring is free to download, with in-app purchases available.
Is Resonance free?
Resonance is free to download, with in-app purchases available.
Which has better reviews, Protractor for Angle Measuring or Resonance?
Resonance is rated higher. Protractor for Angle Measuring averages 4.5 out of 5 from 1.1K ratings, while Resonance averages 5.0 from 1 ratings.
Do Protractor for Angle Measuring or Resonance have ads?
Protractor for Angle Measuring shows ads; Resonance does not.
Which is updated more often, Protractor for Angle Measuring or Resonance?
Protractor for Angle Measuring ships an update every 2 weeks, and Resonance every 4 months. Most recently, Protractor for Angle Measuring was updated on October 27, 2026 and Resonance on October 10, 2026.

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