Comparison

STEELMAN vs Decibel Meter dB Spectrum

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

Head to head
About

STEELMAN

This app transforms your iOS device into a sound and vibration detection tool. It helps pinpoint defective or worn parts in vehicles and machinery by analyzing rattles, squeaks, and grinding sounds. Requires additional hardware for full functionality.

Highlights
  • Sound and vibration detection
  • Pinpoints defective parts
  • User-friendly interface
  • Analog and digital readings
  • Selectable audio/vibration input
  • 10-band frequency equalizer
Features
Read full description

Developed for the service technician in mind the STEELMAN SmartEAR1 Sound & Vibration Detection app will assist in locating and pinpointing defective or worn parts in automobiles, heavy machinery or industrial equipment. When used to diagnose vibration, rattles, squeaks and grinding sounds the SmartEAR1 will simplify the task of locating and pinpointing the troubled area or part with ease. When used with our specially designed hardware kits your iOS device will be able to transform into a state of the art Sound & Vibration Detection Tool allowing for ease of locating and pinpointing those hard to find troubled areas or parts. ****NOTE: Additional hardware is required to use this app. For additional information on where to purchase this hardware, please visit https://www.jsproductsinc.com Features: User friendly interface and intuitive operation. Sound level reading displays average, peak and real-time values. Sound level readings are displayed in either Analog or Digital. Analog and Digital readings have 2 display panels the user can choose from. Analog Meter or Analog Wave-Form. Digital Numeric or Digital Bar Graph. Background sound off-setting, sample rates, decibel off-setting can be manually be set. Selectable Audio Sound or Vibration input modes. ****Sound Wand & Sensor Clamp Hardware required**** Reset/Refresh buttons reset/refresh values to default settings. Sound Level Reading Sampling Rate Decibel Off-set Master Volume Control 10 Band Frequency Equalizer allows for HQ sound detection. User information guide includes informative facts about sound perception and permissible noise level exposure as well as a sound level comparison reference chart. Additional Information: Required: Any iOS device running iOS5.0+. Recommended: iPhone 4 and newer/ iPod Touch 4 and newer. Compatible: iPad 2 and newer.

About

Decibel Meter dB Spectrum

Features
Read full description

Desi is the ultimate sound level meter app that brings laboratory-precision noise measurement to your iOS device. Whether you're protecting your hearing, monitoring workplace compliance, or simply curious about your acoustic environment, Desi delivers accurate, real-time decibel readings with stunning visual clarity. Professional Accuracy Calibrated SPL measurements from 30-130 dBA Multiple frequency weighting filters (A, B, C, Z, ITU-R 468) Variable time weighting (SLOW, FAST, IMPULSE) Pre-calibrated for Apple devices with custom calibration support Advanced Analytics Real-time FFT spectrum analysis Live waveform visualization Dominant frequency detection Professional-grade audio processing at 44.1kHz Health & Safety Features Daily noise exposure tracking with TWA calculations HealthKit integration for hearing health monitoring OSHA/NIOSH compliance monitoring Beautiful Interface Multiple stunning display modes: Digital, Analog, FFT, Spectrum Color-coded level indicators for instant recognition Smart Recording Save and analyze measurement sessions Comprehensive history with search functionality Premium Features: - Record unlimited measurement sessions - Full access to recording history and session management -Access to all meter types: Analog, Digital, FFT, and Spectrum Privacy & Security Your data stays yours. Desi processes all audio locally on your device with no cloud processing. Optional HealthKit integration puts you in complete control of your health data sharing. Privacy Policy: https://docs.google.com/document/d/1pxwLuTzWKrYfWHWi58DcdwJlvMhyv4r1GUXKPAGUZao/edit?usp=sharing Terms of Use: https://docs.google.com/document/d/1a5P-1lgEMU5jyKjzAzVjD7_UvhT4yYPhnZofhpV0mTc/edit?usp=sharing

Screenshots

STEELMAN4 screens
Decibel Meter dB Spectrum4 screens

Verdict

The call

The clearest difference is in-app purchases: STEELMAN at none against Decibel Meter dB Spectrum's 4. STEELMAN also leads on iOS requirement (9.0 vs 16.0). Decibel Meter dB Spectrum's advantage is update cadence (every 6 months vs every 22 months). 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. Decibel Meter dB Spectrum sells 4 in-app purchases, starting at $2.99 per 7 days. STEELMAN asks for nothing beyond the download.

UpkeepUpdate frequency

STEELMAN ships an update every 22 months, Decibel Meter dB Spectrum every 6 months. The most recent releases landed on November 1, 2026 and October 20, 2026 respectively.

Scorecard3 real differences · 7 level
STEELMAN versus Decibel Meter dB Spectrum: the parameters behind the verdict, then further details
ParameterSTEELMANDecibel Meter dB Spectrum
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings1 — better—
Update frequencyEvery 22 monthsEvery 6 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS9.0 — better16.0
Further details — not scored
Size19 MB7 MB
Age rating4+4+
DeveloperJS Products, Inc.Ahmet Giray Ucar

In-app purchases

None

STEELMAN

No in-app purchases

4 purchases

Decibel Meter dB Spectrum

Subscriptions4
  • Desibel Weekly Discounted$2.997 Days
  • Desibel Meter Pro Weekly$3.997 Days
  • Desibe Meter Pro Monthly$9.991 Month
Show 1 more
  • Desibel Meter Pro Yearly$29.991 Year

Questions

Is STEELMAN free?
STEELMAN is free to download, with no in-app purchases.
Is Decibel Meter dB Spectrum free?
Decibel Meter dB Spectrum is free to download, with in-app purchases available.
Do STEELMAN or Decibel Meter dB Spectrum have ads?
Neither STEELMAN nor Decibel Meter dB Spectrum shows ads.
Which is updated more often, STEELMAN or Decibel Meter dB Spectrum?
STEELMAN ships an update every 22 months, and Decibel Meter dB Spectrum every 6 months. Most recently, STEELMAN was updated on November 1, 2026 and Decibel Meter dB Spectrum on October 20, 2026.

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