Comparison

Decibel Meter X vs BigWrite Text Box

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

Head to head
About

Decibel Meter X

Transform your iPhone into a precise sound level meter for noise analysis and evidence recording. Features include real-time spectrum analysis, noise exposure tracking, and professional PDF reporting. Ideal for environmental checks, workplace safety, and dispute resolution.

Highlights
  • Multiple weighting modes (A/B/C/Z, ITU-R 468)
  • Real-time FFT spectrum analysis (20Hz–20kHz)
  • Noise exposure tracking (OSHA/NIOSH Dose/TWA)
  • Background recording for evidence
  • Auto-pause recording below threshold
  • iCloud sync for measurements and recordings
  • Professional PDF report export
Features
Read full description

Your pocket acoustic lab. Turn your iPhone into a high-precision sound level meter for environmental noise checks, workplace safety, and evidence recording. Get reliable readings plus real-time spectrum analysis and hearing-protection insights. [Key Features] • Multiple weighting modes: calibrated dB readings with A/B/C/Z and ITU-R 468. • Real-time spectrum: high-speed FFT with a clear 20Hz–20kHz distribution. • Noise exposure tracking: OSHA/NIOSH Dose and TWA with risk alerts. • Recording for evidence: record while measuring, supports background recording. • Auto Pause: automatically pauses recording below a threshold and resumes above it. • iCloud sync: measurements and recordings sync across devices. • Professional reports: export PDF with trends, max/min/avg, and location. • Calibration & privacy: manual device calibration; data stored locally or in your iCloud. [Common Scenarios] • Neighbor noise evidence: accurately record renovation/party noise levels and recordings to support complaints and dispute resolution. • Sleep environment monitoring: check bedroom background noise, identify sources that affect sleep, improve rest quality. • Workplace assessment: monitor noise exposure in factories, construction sites, or offices to prevent occupational hearing loss. • Appliance noise testing: check whether air conditioners, refrigerators, or ventilation systems exceed limits for quality checks or returns. • Hearing protection: monitor levels at concerts, clubs, and other loud environments to avoid irreversible hearing damage. [Privacy] Microphone access is only for sound analysis. Audio stays local or in your private iCloud. [Subscription Info] • You can subscribe for unlimited access to all features of Decibel Meter. • Subscriptions are billed monthly or annually at the rate selected depending on the subscription plan. By using this App, you agree to our Privacy Policy and Terms of Use: http://cpux.gmud.top/web/soundmeterx/privacy-en.html http://cpux.gmud.top/web/soundmeterx/terms-en.html

About

BigWrite Text Box

Features
Read full description

Make everything you write in a text box on the web bigger. Select the size you want and everything you write in a text box will be that size. Accessibility sizes make for a more comfortable and confident writing experience, especially when you are filling out forms. It works on everything from government sites, discussion forums, to search boxes.

Screenshots

Decibel Meter X4 screens
BigWrite Text Box1 screens

Verdict

The call

The clearest difference is in-app purchases: BigWrite Text Box at none against Decibel Meter X's 3. BigWrite Text Box also leads on iOS requirement (15.0 vs 17.0). 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 X sells 3 in-app purchases, starting at $1.99 per month. BigWrite Text Box asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Decibel Meter X versus BigWrite Text Box: the parameters behind the verdict, then further details
ParameterDecibel Meter XBigWrite Text Box
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 4 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size7 MB8 MB
Age rating4+4+
Developer永刚 陈David Johnson

In-app purchases

3 purchases

Decibel Meter X

Subscriptions2
  • Pro$1.991 Month
  • Pro7 Days trial$14.991 Year
One-time1
  • Pro$29.99
None

BigWrite Text Box

No in-app purchases

Questions

Is Decibel Meter X free?
Decibel Meter X is free to download, with in-app purchases available.
Is BigWrite Text Box free?
BigWrite Text Box is free to download, with no in-app purchases.
Do Decibel Meter X or BigWrite Text Box have ads?
Neither Decibel Meter X nor BigWrite Text Box shows ads.

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