Comparison

DocScann vs Decibel Meter

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

Head to head
About

DocScann

Features
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DocScann turns your iPhone into a powerful document scanner. Capture receipts, contracts, IDs, and letters in seconds — then organize, edit, annotate, and share them as professional PDFs. SCAN IN SECONDS Point your camera at any document and DocScann automatically detects edges and captures a clean scan. Multi-page support lets you scan entire contracts or booklets in one go. ORGANIZE YOUR WAY Create folders and subfolders to keep everything tidy. Star your most important documents for quick access. Sort by name, date, or size. Filter by category — or create your own custom categories with unique icons and colors. BUILT-IN CATEGORIES Automatically sort scans into Invoice, Contract, ID, Receipt, Letter, or Other. DocScann even suggests the right category using text recognition. POWERFUL IMAGE EDITOR Fine-tune every scan with brightness and contrast sliders, rotate and flip pages, and apply filters like Grayscale, Black & White, Enhanced, and Magic for the perfect look. ANNOTATE & SIGN Draw freehand, add text annotations, place stamps (Approved, Draft, Confidential, and more), or add your personal signature — all directly on your scans. TEXT RECOGNITION (OCR) Extract text from any scanned page. Copy text, detect barcodes, and generate fully searchable PDFs so you can find documents with a simple text search. PROFESSIONAL PDF EXPORT Export documents as PDFs with adjustable quality (Low, Medium, High), page size (A4, Letter, Original), grayscale mode, and author metadata. Protect sensitive files with password encryption. SHARE ANYWHERE Send your PDFs and images via Mail, Messages, AirDrop, WhatsApp, Google Drive, OneDrive, Dropbox, and more. BATCH OPERATIONS Select multiple documents to merge them into one or export a combined PDF — perfect for compiling reports or archives. PRIVACY FIRST All your documents stay on your device. Nothing is uploaded to any server. Your scans are yours alone. Terms of Use By using this app, you agree to Apple's standard End User License Agreement (EULA), available at: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Decibel Meter

Measure sound levels accurately with this tool that transforms your device into a portable sound level meter. It provides real-time decibel readings, historical graphs, and detailed statistics for various environments. Ideal for musicians, professionals, and anyone concerned about noise exposure.

Highlights
  • Real-time decibel readings
  • Live graph of sound levels
  • Professional frequency weighting (A, C, Z)
  • Min, Average, Max, and Peak statistics
  • Noise dose tracking
  • Camera mode with dB overlay
  • Saved records with location tags
Features
Read full description

Know Exactly How Loud It Is with Decibel Meter & dB Sound Level. Ever wondered whether your workshop is damaging your hearing, if the neighbours really are out of line, or how loud that concert actually got? Do you wish you had a reliable sound level meter in your pocket instead of guessing? Whether you are a musician, a site foreman, a teacher, a parent or simply someone who values quiet, Decibel Meter is your go-to solution for fast, clear noise measurement. Powered by real-time audio analysis and an interface you can read at a glance, Decibel Meter transforms your iOS device into a capable sound level meter. Point your phone at the noise and see exactly how many decibels you are dealing with - no setup, no account, no internet connection needed. Key Features Real-Time Decibel Readings A large, instantly readable dB value backed by a live graph of the last two minutes, so you see not just how loud it is right now, but how it has been changing. (Premium subscription required.) Professional A, C and Z Frequency Weighting Switch between the IEC 61672 weighting curves the professionals use. A-weighting matches human hearing and drives most noise limits, C keeps the bass for music and machinery, Z is completely flat. Fast (125 ms) and Slow (1 s) response speeds included. (Premium subscription required.) Min, Average, Max and Peak Statistics Every session tracks the quietest and loudest moments, the true energy average (Leq) and the unsmoothed peak, so you can describe any environment with real numbers instead of opinions. (Premium subscription required.) Noise Dose Tracking See your exposure as a percentage of the recommended daily limit, based on the NIOSH standard of 85 dB over 8 hours with a 3 dB exchange rate. Know when it is time to walk away. (Premium subscription required.) Camera Mode with Live dB Overlay Put the decibel readout on top of what your camera sees and record it as a video clip - perfect for showing what was loud, not just saying it was. (Premium subscription required.) Saved Records with Location Tags Name each measurement, tag it with the place it was taken, and open it again later with the full graph and statistics intact. (Premium subscription required.) Manual Calibration Match the app to a reference meter once, and the correction is applied to every measurement from then on. (Premium subscription required.) Why Choose Decibel Meter? Simple by Default, Deep on Demand Start with just the number. Switch to the detailed view when you want the frequency spectrum and the dominant frequency to identify what is actually making the noise. A Reference Table That Makes Sense Seven decibel bands with everyday examples - from a whisper to a jet taking off - colour coded from safe to dangerous, so any reading means something immediately. Works Entirely Offline Measuring, saving and reviewing all happen on your device. No account, no sign-up, no measurements leaving your phone. Premium Subscription Required To access the measurement features - live readings, A/C/Z weighting, session statistics, noise dose, camera mode, saved records and calibration - a premium subscription is required. Choose the plan that fits you, whether you need it for a single project or every working day. Get Started Today! Stop guessing how loud it is. Decibel Meter gives you a clear number, professional weighting curves and a record you can come back to. Transform your iOS device into a sound level meter you will actually use. Download Decibel Meter & dB Sound Level now and know exactly how loud it is. Please note: readings are estimates produced with the microphone in your device and are not a substitute for a certified Class 1 or Class 2 sound level meter. Privacy Policy: https://noiselevel.app/privacy/ Terms of Use: https://noiselevel.app/terms/ Contact Support: support@appcellent.com Take control of the noise around you - get Decibel Meter today and measure with confidence!

Screenshots

DocScann4 screens
Decibel Meter4 screens

Verdict

The call

The clearest difference is device support: Decibel Meter at 3 against DocScann's 1. On price, update cadence, ads and in-app purchases 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. DocScann sells 2 in-app purchases, starting at $0.99 per month and Decibel Meter sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

DocScann ships an update every 3 months, Decibel Meter every 6 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 8 level
DocScann versus Decibel Meter: the parameters behind the verdict, then further details
ParameterDocScannDecibel Meter
PriceFreeFree
Rating—1.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS18.617.0 — better
Further details — not scored
Size20 MB19 MB
Age rating4+4+
DeveloperAlexander Nikonov22270669431Appcellent

In-app purchases

2 purchases

DocScann

Subscriptions2
  • Monthly$0.991 Month
  • Annual7 Days trial$11.991 Year
2 purchases

Decibel Meter

Subscriptions2
  • Premium Weekly3 Days trial$6.997 Days
  • Premium Yearly$39.991 Year

Questions

Is DocScann free?
DocScann is free to download, with in-app purchases available.
Is Decibel Meter free?
Decibel Meter is free to download, with in-app purchases available.
Do DocScann or Decibel Meter have ads?
Neither DocScann nor Decibel Meter shows ads.
Which is updated more often, DocScann or Decibel Meter?
DocScann ships an update every 3 months, and Decibel Meter every 6 weeks. Most recently, DocScann was updated on October 30, 2026 and Decibel Meter on October 31, 2026.

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