Comparison

OpeNoise vs iForum

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

Head to head
About

OpeNoise

This application measures real-time sound pressure levels, displaying minimum and maximum values. It offers advanced analysis like third octave and FFT, with options to save data, calibrate, and share measurements with a community. Note: it is not intended for professional use.

Highlights
  • Real-time A-weighted sound pressure level measurement
  • Minimum and maximum level tracking
  • Third octave and FFT analysis
  • Data saving in text file
  • Calibration functionality
  • Measurements displayed on a map
  • Community sharing of calibration and measurements
Features
Read full description

OpeNoise is a real-time noise level meter. TECHNICAL SPECIFICATIONS: - Real-time A-weighted sound pressure level measurement - Minimum and maximum level - Third octave and FFT analysis - Data saving in text file - Calibration - Displaying measurements on a map - Metadata compilation - Sharing calibration and measurements with the OpeNoise community TERM OF USE This app is not intended for professional use, it does not necessarily guarantee an accurate noise measurement. Since each device has a different response to noise, a comparison with a professional noise level meter in the measurement dynamic range is required. The utilization of the app requires adequate technical knowledge and skill; an extemporary measurement might not be correct. The calibrations and measurements sent to the OpeNoise community will be used for statistical purposes only and cannot be used in any way to verify compliance with legal limits. CREDITS Developers: Arpa Piemonte (Regional Agency for the Protection of the Environment of Piedmont - Italy - www.arpa.piemonte.it). The code is open source under GNU v.2 license or later, the code is on GitHub: https://github.com/Arpapiemonte/ KEYWORDS noise level meter, level, sound, noise, measure, measurement, dB, db, dBA, dB(A), decibel

About

iForum

Features
Read full description

SIMPLICITY OF ACCESS AND COMFORT OF THE SPACES iForum APP allows our customers direct access to the iForum Building (24-7 iForum Building access). The app is reserved exclusively for members, therefore it is necessary to have an account and become a member of the iForum community. iForum is an exclusive space located in the heart of Rome, an innovative "forum" where customers, iCitizens, can work, make digital culture or meet Digital Stars, companies specialized in the digital technology sector. A new building with 4 floors of workspaces, a comfortable environment surrounded by greenery, and a generous amount of natural light thanks to the large floor-to-ceiling windows and a terrace overlooking the city. The iForum app also allows you to access convenient covered parking spaces. The building is located in a strategic position, a stone's throw from the Aurelian Walls, easily accessible, and well connected by public transport. FLEXIBILITY AND EFFICIENCY iForum APP allows you to book and access workstations in coworking spaces and private offices with 2, 4 or 6 workstations, adaptable to your needs, versatile and multifunctional, with high levels of service on flexible contracts. The advanced wi-fi network guarantees a high-performance Internet connection, direct streaming, webinars, and videoconferences, without bandwidth or security problems of any kind. SERVICES AND NETWORKING iForum APP offers the possibility to use iForum services including the booking of Meeting rooms & Event spaces. iForum has an Auditorium and a meeting room that can be configured to allow for different layouts and capacities. Demo rooms and state-of-the-art digital infrastructures allow showcases and demos to present new products, services, or digital solutions, propose and test new business models in real-time, and communicate. Versatile event spaces, indoors and outdoors, are designed to enrich the iForum experience, engage customers, and foster partner networking.

Screenshots

OpeNoise4 screens
iForum4 screens

Verdict

The call

OpeNoise and iForum are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

OpeNoise ships an update every 7 months, iForum every 8 months. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.

ScorecardNo meaningful differences
OpeNoise versus iForum: the parameters behind the verdict, then further details
ParameterOpeNoiseiForum
PriceFreeFree
Rating4.0 (4 ratings) — better—
Positive reviews85.7% of reviews—
Number of ratings4 — better—
Update frequencyEvery 7 months — betterEvery 8 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size12 MB92 MB
Age rating4+4+
DeveloperArpa PiemonteSofia SRL

In-app purchases

None

OpeNoise

No in-app purchases

None

iForum

No in-app purchases

Questions

Is OpeNoise free?
OpeNoise is free to download, with no in-app purchases.
Is iForum free?
iForum is free to download, with no in-app purchases.
Do OpeNoise or iForum have ads?
Neither OpeNoise nor iForum shows ads.
Which is updated more often, OpeNoise or iForum?
OpeNoise ships an update every 7 months, and iForum every 8 months. Most recently, OpeNoise was updated on October 13, 2026 and iForum on October 4, 2026.

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