Comparison

Decibel Meter vs 2FA Authenticator Code

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

Head to head
About

Decibel Meter

Measure environmental noise levels and display decibel values in various formats. This smart sound meter app features a tidy graphic design and provides real-time noise detection using your mobile microphone. It offers clear visualizations of sound levels and includes helpful information about decibel measurements.

Highlights
  • Measures environmental noise decibel values
  • Displays dB values in various forms
  • Tidy graphic design with high frame rate
  • Uses mobile microphone for ambient noise measurement
  • Shows current, min, average, and max decibel values
  • Displays decibel change chart
  • Auto decibel value calibration
Features
Read full description

A sound level meter that uses the microphone your iPhone or iPad already has. Free to download. FREE • Live dB with a gauge, a 60-second chart, a held peak and MIN / AVG (LAeq) / MAX while you record. • Frequency weighting A, C or Z and Fast or Slow response, like a hand-held meter. • Noise dose mode: NIOSH or OSHA dose, TWA, projected 8-hour dose and time left, always on the A scale. • Recordings saved to History with notes, tags, place and search. • Noise alert at 85 dB, a table of everyday sounds and a hearing-safety guide. • PDF report in your language, CSV, image card and text summary. NEIGHBOUR AND WORKPLACE NOISE LOGS Record a session, add a note and the place, then export a PDF with date, duration, weighting, minimum, average, maximum, time above 85 dB and the level chart. It is a personal record, not legal evidence. PREMIUM Weekly, monthly, yearly or a one-time Lifetime purchase. Removes ads and adds a year of statistics, session comparison, the noise map, longer video with dB overlay, a custom alert threshold, background monitoring and extra themes. Free users can watch an optional ad to unlock a single export. HONEST ABOUT THE LIMITS A phone microphone is made for voice, differs between models and squashes very loud sound, so the loudest readings come out low. The app adds a built-in correction; calibrate against a reference meter for better numbers. It is not a certified Class 1 or Class 2 meter, a dosimeter or a hearing test. PRIVACY No account. Sound is analysed in memory and not stored; the Video tab records audio only inside videos you choose to record. The free version shows Google ads and may ask for tracking permission; location is used only to tag a recording, if you allow it. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

2FA Authenticator Code

This app securely stores and displays one-time verification codes for services like email and social media. It offers quick access to codes with a visual timer and automatic refresh, and supports adding services via QR scan or manual entry. Enhanced security features include optional PIN access and code hiding.

Highlights
  • Stores one-time verification codes
  • Visual timer for code refresh
  • Automatic code refresh every 30 seconds
  • Add services via QR code scan
  • Add services via manual entry
  • Optional PIN access for app security
  • Hide codes on app launch (Premium)
Features
Read full description

2FA Authenticator Code is a secure and simple authenticator app for storing and displaying one-time verification codes (2FA) used to sign in to services such as email, social networks, and work tools. Keep all your verification codes in one place and access them quickly whenever you need to confirm your identity. AUTHENTICATION CODES: One-Time Codes List 1. View all connected services on the main screen 2. See the current six-digit verification code for each service 3. Visual timer shows when the code will refresh 4. Tap the code to copy it instantly 5. Automatic code refresh approximately every 30 seconds ADD SERVICES QR Code Scan Scan a QR code provided by a service to add it automatically Manual Entry Add a service using a simple form Required fields: service name and secret key Manage Services Remove any service from the list at any time APP SECURITY PIN Access – Optional PIN code to open the app – Automatic locking after the app is minimized – PIN code can be changed at any time Hide Codes on Launch – Option to hide one-time codes when opening the app – Codes are shown only after user confirmation or tapping “Show” Clipboard Auto-Clear – Automatically removes copied codes from the clipboard after 30 seconds – Works in the background with no extra actions Free & Premium Free Version • Add up to 5 services • Hiding codes on app launch is not available • Automatic clipboard code removal is not available Premium Version • Unlimited services • Hide one-time codes when opening the app • Automatic removal of copied codes from the clipboard Privacy Policy: https://docs.google.com/document/d/13Cz3AQKssRyE7-XMr8Jx-wLdWDuDQCS-mIhVxU46ZrI/edit?usp=sharing Terms & Conditions: https://docs.google.com/document/d/15MxMHyOxkAqKQxhvpKWypDxBLpxMgwsik6cO3Wltxwo/edit?usp=sharing

Screenshots

Decibel Meter4 screens
2FA Authenticator Code4 screens

Verdict

The call

The clearest difference is ads: 2FA Authenticator Code at none against Decibel Meter's shown. 2FA Authenticator Code also leads on rating (5.0 vs 4.8) and update cadence (every 5 weeks vs every 2 months). Decibel Meter's advantage is ratings volume (4 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. Decibel Meter sells 3 in-app purchases, starting at $0.99 per 7 days and 2FA Authenticator Code sells 5 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

2FA Authenticator Code holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

UpkeepUpdate frequency

Decibel Meter ships an update every 2 months, 2FA Authenticator Code every 5 weeks. The most recent releases landed on October 22, 2026 and October 15, 2026 respectively.

Scorecard4 real differences · 6 level
Decibel Meter versus 2FA Authenticator Code: the parameters behind the verdict, then further details
ParameterDecibel Meter2FA Authenticator Code
PriceFreeFree
Rating4.8 (4 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings4 — better1
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad — betteriPhone
Requires iOS17.017.0
Further details — not scored
Size9 MB10 MB
Age rating4+4+
DeveloperGrima HdezFUTUREFOOD LLC

Customer experience

Decibel Meter

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

2FA Authenticator Code

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

In-app purchases

3 purchases

Decibel Meter

Subscriptions3
  • Decibel PRO week sub$0.997 Days
  • Decibel PRO mounth sub$1.991 Month
  • Decibel PRO year sub$17.991 Year
5 purchases

2FA Authenticator Code

Subscriptions4
  • Authenticator Premium$4.997 Days
  • 2FA Authenticator Premium3 Days trial$4.997 Days
  • Sync Your Devices Premium$5.997 Days
Show 1 more
  • Sync Your Devices Premium3 Days trial$5.997 Days
One-time1
  • 2FA Authenticator Lifetime$119.99

Questions

Is Decibel Meter free?
Decibel Meter is free to download, with in-app purchases available.
Is 2FA Authenticator Code free?
2FA Authenticator Code is free to download, with in-app purchases available.
Which has better reviews, Decibel Meter or 2FA Authenticator Code?
2FA Authenticator Code is rated higher. Decibel Meter averages 4.8 out of 5 from 4 ratings, while 2FA Authenticator Code averages 5.0 from 1 ratings.
Do Decibel Meter or 2FA Authenticator Code have ads?
Decibel Meter shows ads; 2FA Authenticator Code does not.
Which is updated more often, Decibel Meter or 2FA Authenticator Code?
Decibel Meter ships an update every 2 months, and 2FA Authenticator Code every 5 weeks. Most recently, Decibel Meter was updated on October 22, 2026 and 2FA Authenticator Code on October 15, 2026.

Other comparisons