Comparison

DeDuplicate vs Sound Meter Plus

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

Head to head
About

DeDuplicate

This app scans your cloud storage for identical files and allows you to remove duplicates, freeing up valuable space. It efficiently identifies exact duplicates using file hash values without downloading your files, ensuring privacy and speed.

Highlights
  • Scans cloud storage for duplicate files
  • Removes extra copies to free up space
  • Efficient and fast scanning
  • Accurate detection using file hash values
  • Privacy-first, local processing
  • Supports multiple cloud services
Features
Read full description

Google Drive, OneDrive, Dropbox, and other cloud services don’t offer built-in tools to find and remove duplicates. If you store many files in the cloud, it’s easy to lose control and waste space. Automatic mobile backups make this problem even worse. DeDuplicate scans your cloud storage, finds identical files, and lets you remove the extra copies to free up space. How it works: 1) Log into your account. 2) Choose one or more folders (or the entire drive) and start the scan. Scan time depends on the NUMBER of files, not their size. 3) Review the detected duplicates and optionally ignore some of them. 4) Confirm the operation. What makes DeDuplicate different: • Efficient and fast: files are NOT downloaded. DeDuplicate uses metadata provided by cloud services, so it saves bandwidth, requires no extra storage, and scans are very quick (e.g. ~100,000 files in under 10 minutes, depending on network speed). • Accurate detection: only EXACT duplicates are detected using file hash values. File names are ignored; contents must be identical. • Privacy-first: everything runs locally on your device. The app connects directly to cloud providers, with no intermediary servers and no file data collection. • Cross-platform support. DeDuplicate currently supports the following cloud services: (PERSONAL ACCOUNTS - see notes below!) • OneDrive • Dropbox • Google Drive (∗) • MEGA • Box • pCloud • Yandex.Disk IMPORTANT: DeDuplicate is designed and tested primarily with PERSONAL/CONSUMER ACCOUNTS. Business, school, or enterprise accounts may behave differently and are not fully supported yet. Improving support for those account types is planned for a future update! NOTES ABOUT GOOGLE DRIVE: - Due to recent changes in Google’s requirements for third-party apps, DeDuplicate currently does not have a “verified” status. You can still use Google Drive normally, but signing in requires a small workaround, which is explained step by step inside the app! - Google proprietary file types (such as Google Docs, Google Sheets, etc.) are treated specially by Google Drive and are NOT included in DeDuplicate’s scan. WHY DO YOU NEED THIS APP? Until now, the only practical way to remove duplicates from cloud storage was a very time-consuming workaround: downloading everything to your computer, using one of the many “offline” duplicate-file utilities, and then syncing the changes back to the cloud. In the worst-case scenario, this even means re-uploading everything from scratch. That’s hardly a viable option when you have over 500 GB of unorganized cat pictures :) DeDuplicate is actively developed. If you encounter any issues, please take the time to contact us!

About

Sound Meter Plus

Features
Read full description

Sound Meter is a utility tool that shows decibel values by measuring the environmental noise, displaying dB values in various forms. Features: • Toggle tap to start or stop recording sound data • Save dB sound data image into Camera Roll • Save recorded sound into the Files app • Copy dB sound data to Clipboard for advanced operations • Show average, minimum, and maximum decibel values per second • Indicate decibel levels with a graph line • Display the current noise reference • Display decibel levels with a graph line • Display elapsed time of decibel readings • Calibrate the decibel readings A sound level meter is used for acoustic measurements. It is commonly a hand-held instrument with a microphone. The diaphragm of the microphone responds to changes in air pressure caused by sound waves. That is why the instrument is sometimes referred to as a Sound Pressure Level Meter. The decibel is a unit of measurement used to express the ratio of one value of a power or field quantity to another on a logarithmic scale. This logarithmic quantity is called the power level or field level, respectively. It can be used to express either a change in value or an absolute value. A noise level chart showing examples of sounds with dB levels ranging from 0 to 180 decibels: 180 – Rocket launch 140 – Jet engine at takeoff 120 – Thunderclap 110 – Rock band 100 – Motorcycle 90 – Lawn mower 80 – Alarm clock 70 – Shower 60 – Conversational speech 50 – Light traffic 30 – Whisper 20 – Rustling leaves 10 – A pin dropping 0 – Healthy hearing threshold Sample Sound Data: \[50.256, 51.245, ..., 65.359] You can calibrate your device with an actual sound meter (dBA). Microphones in most devices are limited and should be used as auxiliary tools. For more accurate dB values, we recommend using a dedicated sound level meter. Thanks for your support! Visit nitrio.com for more apps for your iOS devices.

Screenshots

DeDuplicate4 screens
Sound Meter Plus4 screens

Verdict

The call

The clearest difference is in-app purchases: Sound Meter Plus at none against DeDuplicate's 2. Sound Meter Plus also leads on price ($2.99 vs $7.99) and iOS requirement (12.0 vs 15.0). DeDuplicate's advantage is update cadence (every 2 weeks vs every 39 months). On 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

DeDuplicate costs $7.99 and Sound Meter Plus $2.99 up front. DeDuplicate sells 2 one-off in-app purchases. Sound Meter Plus asks for nothing beyond the download.

UpkeepUpdate frequency

DeDuplicate ships an update every 2 weeks, Sound Meter Plus every 39 months. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

Scorecard4 real differences · 6 level
DeDuplicate versus Sound Meter Plus: the parameters behind the verdict, then further details
ParameterDeDuplicateSound Meter Plus
Price$7.99$2.99 — better
Rating4.5 (129 ratings) — better—
Positive reviews48.0% of reviews—
Number of ratings129 — better—
Update frequencyEvery 2 weeks — betterEvery 39 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size26 MB10 MB
Age rating4+4+
DeveloperPaolo PuglieseHeng Jia Liang

In-app purchases

2 purchases

DeDuplicate

One-time2
  • Buy me a coffee$0.99
  • No Ads - Lifetime$7.99
None

Sound Meter Plus

No in-app purchases

Questions

Is DeDuplicate free?
DeDuplicate costs $7.99, and also offers in-app purchases.
Is Sound Meter Plus free?
Sound Meter Plus costs $2.99, with no in-app purchases.
Do DeDuplicate or Sound Meter Plus have ads?
Neither DeDuplicate nor Sound Meter Plus shows ads.
Which is updated more often, DeDuplicate or Sound Meter Plus?
DeDuplicate ships an update every 2 weeks, and Sound Meter Plus every 39 months. Most recently, DeDuplicate was updated on October 14, 2026 and Sound Meter Plus on October 11, 2026.

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