--- title: "Acoustic Facts - Bewertungen, Einnahmen und Downloads in Portugal | Apple App Store" description: "This app turns your iPhone into a high-quality measurement equipment for reverberation time measurements. Reverberation time is a measure of how long a sound persists in a room after the sound is turn" --- # Acoustic Facts — Portugal ![Acoustic Facts App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/95/18/fc/9518fc94-e602-30b6-ef93-525709caeb45/AppIcon-0-0-1x_U007emarketing-0-3-0-85-220.png/434x0w.png) **Developer:** [Acoustic Facts Scandinavia](https://apptail.io/de/developer/acoustic-facts-scandinavia-qiue) **Category:** Utilities **Rating:** N/A (0 ratings) **Price:** Free **Bundle ID:** com.acousticfacts.rtmeasure **Store:** Apple App Store **Country:** Portugal **Version:** 2.0 (released 2024-12-19) **Original Release:** 2017-07-20 **App Store Link:** [Download on Apple App Store](https://apps.apple.com/pt/app/app/id1260211484) **AppTail Page:** [https://apptail.io/de/app/acoustic-facts-hPni/portugal](https://apptail.io/de/app/acoustic-facts-hPni/portugal) ## Acoustic Facts Description This app turns your iPhone into a high-quality measurement equipment for reverberation time measurements. Reverberation time is a measure of how long a sound persists in a room after the sound is turned off, i e a measure of the room echo. The techniques and algorithms in this app follow the international measurement standard ISO 3382-2 and measures reverberation times in the octave bands between 125 Hz and 4 kHz, which are the most common frequency bands used for most rooms. The algorithms are validated against the laboratory standard ISO 354 for best accuracy. Any impulsive sound can be used as source, e g a handclap, a dropped book. For best results use the specially designed impulsive source provided by Acoustic Facts (see our website The measured values can be used as input in the room acoustics web tool that can be found at At the site there are ample products that are validated and that can be used to modify the reverberation time. ## Acoustic Facts Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/16/4a/52/164a5266-6d94-aace-63ca-ac631b279be1/pr_source.png/1242x2688.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/46/5a/07/465a07d4-f594-b9a0-c23c-ae9077d826b2/pr_source.png/1242x2688.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/59/50/08/595008e4-e9cd-9043-b7c2-738b3cfaece5/pr_source.png/1242x2688.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/7e/05/b0/7e05b04e-654c-32f1-ba5d-b05475cc33f6/pr_source.png/1242x2688.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/0d/63/39/0d6339c1-cc2b-c381-b334-65a185007115/pr_source.png/1242x2688.png) ## Acoustic Facts Store Rankings | Chart | Country | Category | Rank | |-------|---------|----------|------| | Top Bezahlt | Portugal | Utilities | #23 | | Top Bezahlt | Portugal | Overall | #141 | ## Apps Similar to Acoustic Facts - [ekey home app](https://apptail.io/de/app/ekey-home-app-GQrc/portugal) - [Decibel Meter - Sound Analyzer](https://apptail.io/de/app/decibel-meter-sound-analyzer-uhxc/portugal) - [Elitech Tools](https://apptail.io/de/app/elitech-tools-dlUc/portugal) - [EGLO mycontrol](https://apptail.io/de/app/eglo-mycontrol-zEzd/portugal) - [Linked Charge](https://apptail.io/de/app/linked-charge-dPYe/portugal) - [Garda 360](https://apptail.io/de/app/garda-360-urij/portugal) - [Room acoustics measurement](https://apptail.io/de/app/room-acoustics-measurement-qIpn/portugal) - [Bluguard P2P+](https://apptail.io/de/app/bluguard-p2p-xGUq/portugal) - [VQ AcousticCheck](https://apptail.io/de/app/vq-acousticcheck-Sxyu/portugal) - [PAX Connect](https://apptail.io/de/app/pax-connect-hCSu/portugal) ## Acoustic Facts Available In - [Vereinigte Arabische Emirate](https://apptail.io/de/app/acoustic-facts-hPni/united-arab-emirates) - [Argentinien](https://apptail.io/de/app/acoustic-facts-hPni/argentina) - [Österreich](https://apptail.io/de/app/acoustic-facts-hPni/austria) - [Belgien](https://apptail.io/de/app/acoustic-facts-hPni/belgium) - [Kanada](https://apptail.io/de/app/acoustic-facts-hPni/canada) - [Chile](https://apptail.io/de/app/acoustic-facts-hPni/chile) - [Deutschland](https://apptail.io/de/app/acoustic-facts-hPni/germany) - [Algerien](https://apptail.io/de/app/acoustic-facts-hPni/algeria) - [Frankreich](https://apptail.io/de/app/acoustic-facts-hPni/france) - [Japan](https://apptail.io/de/app/acoustic-facts-hPni/japan) - [Kuwait](https://apptail.io/de/app/acoustic-facts-hPni/kuwait) - [Malaysia](https://apptail.io/de/app/acoustic-facts-hPni/malaysia) - [Niederlande](https://apptail.io/de/app/acoustic-facts-hPni/netherlands) - [Portugal](https://apptail.io/de/app/acoustic-facts-hPni/portugal) - [Schweden](https://apptail.io/de/app/acoustic-facts-hPni/sweden) - [Singapur](https://apptail.io/de/app/acoustic-facts-hPni/singapore) - [Türkei](https://apptail.io/de/app/acoustic-facts-hPni/turkey) - [Vereinigte Staaten](https://apptail.io/de/app/acoustic-facts-hPni/united-states) - [Vietnam](https://apptail.io/de/app/acoustic-facts-hPni/vietnam) --- ## About AppTail [AppTail](https://apptail.io/de) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. 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