Comparison

iFansum Decibel Meter vs EMF Scan

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

Head to head
About

iFansum Decibel Meter

Measure sound levels with this professional tool. It offers A/C/Z weighting and specialized low-frequency detection for various environments. Document noise issues with photos and location data, and export detailed reports.

Highlights
  • Low-frequency detection (1-100 Hz)
  • A/C/Z weighting
  • Unlimited audio/video recording
  • Watermark camera with dB readings
  • History and PDF export
  • Privacy-focused, local data storage
Features
Read full description

Decibel Meter — Professional Sound Level Analyzer Turn your iPhone into a professional sound level meter. Measure noise at home, work, or on the go. Get instant dB readings with A/C/Z weighting and low-frequency detection (1-100 Hz). Perfect for: • Apartment noise complaints — document with timestamps, photos, and location • Workplace safety — OSHA/NIOSH-compliant measurements • Low-frequency hums from HVAC, appliances, and equipment • Sleep environment monitoring Key Features: • Standard & Low-Frequency Modes: Detect 1-100 Hz hums often missed by standard meters • A/C/Z Weighting: A-weighting (human ear), C-weighting (environmental), Z-weighting (flat) • Unlimited Recording: Audio and video with no time limits — all stored locally • Watermark Camera: Auto-add dB readings, timestamp, and location to photos/videos • History & Export: Review past recordings and export PDF reports Privacy First: All data stays on your device. No account required. Nothing is uploaded. Pro features: Unlimited recording, full history, watermark camera, and PDF export. Contact: support@ifansum.com Privacy Policy: https://ifansum.com/apps/000001/privacy.html Terms of Service: https://ifansum.com/apps/000001/terms-of-service.html

About

EMF Scan

Features
Read full description

Measure electromagnetic fields (EMF) in real time using your smartphone's built-in magnetic sensor. [Key Features] • Real-time magnetic field strength display (switch between µT / mG) • Automatic saving of measurement data and history management • Map view of measurement locations • Sound alarm (volume changes with field strength) • Color themes (11 in total — dark and light pastel) • Ad-removal option (one-time purchase; also unlocks some color themes) [Great For] • Anyone concerned about magnetic fields around home appliances or power lines • Anyone who wants an easy alternative to a dedicated EMF meter • Anyone who wants to record and manage measurement data * This app uses your smartphone's magnetic sensor. Its accuracy differs from that of a dedicated measuring instrument.

Screenshots

iFansum Decibel Meter4 screens
EMF Scan4 screens

Verdict

The call

The clearest difference is ads: iFansum Decibel Meter at none against EMF Scan's shown. iFansum Decibel Meter also leads on update cadence (every 2 days vs weekly). EMF Scan's advantage is iOS requirement (13.0 vs 15.0). On price, in-app purchases 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. iFansum Decibel Meter sells 1 in-app purchase, starting at $3.99 per month and EMF Scan sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

iFansum Decibel Meter ships an update every 2 days, EMF Scan weekly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 6 level
iFansum Decibel Meter versus EMF Scan: the parameters behind the verdict, then further details
ParameteriFansum Decibel MeterEMF Scan
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 days — betterWeekly
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.013.0 — better
Further details — not scored
Size105 MB29 MB
Age rating4+4+
DeveloperXinyang iFansum Technology Co., Ltd.Yasuhiro Kodama

In-app purchases

1 purchases

iFansum Decibel Meter

Subscriptions1
  • Decibel Meter - Monthly Premium$3.991 Month
1 purchases

EMF Scan

One-time1
  • 広告を削除$0.99

Questions

Is iFansum Decibel Meter free?
iFansum Decibel Meter is free to download, with in-app purchases available.
Is EMF Scan free?
EMF Scan is free to download, with in-app purchases available.
Do iFansum Decibel Meter or EMF Scan have ads?
EMF Scan shows ads; iFansum Decibel Meter does not.
Which is updated more often, iFansum Decibel Meter or EMF Scan?
iFansum Decibel Meter ships an update every 2 days, and EMF Scan weekly. Most recently, iFansum Decibel Meter was updated on November 5, 2026 and EMF Scan on October 31, 2026.

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