STIPA Downloads & RevenueSTIPA - Speech Intelligibility · App Store
Not in any tracked top chart right now.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperYumm One
CategoryMusic
Price44.99 EUR
Released
Rating★ 0.0 (0)
Version1.0.3
Age rating4+
First seen by us
4 Nov 2026
4 Nov 2026STIPA - Speech Intelligibility update history & changes
Last change · 4 events since 18 Dec 2025Full timeline ↓🆕First spotted by AppInsider📈Dropped out of every chart we track📦Version 1.0.3🆕Released on the App Store
Full timeline · 4 events
- 🆕STIPA - Speech Intelligibility first spotted by AppInsider#12 in Top Paid · Music · Germany
- 📈STIPA - Speech Intelligibility dropped out of every chart we trackLast seen 3 Nov
- 📦STIPA - Speech Intelligibility version 1.0.3Input channel selection now works correctly
- Version 1.0.2 added the ability to choose a channel on a multichannel USB / Lightning audio interface, but the app still analyzed the operating system's default input - the mixed/main signal - instead of the channel you picked. This update makes the selection take effect, on both iPhone/iPad and Mac.
What was fixed:
- The chosen input channel is now routed directly from the audio interface into the analyzer, so only that channel is measured - not a downmix of the whole device.
- Your channel choice is remembered between sessions and restored automatically when you reconnect your interface.… more - 🆕STIPA - Speech Intelligibility released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
0.0 ★
0 ratings
Measured
STIPA - Speech Intelligibility on the App Store
App details
App ID
6756669181
Publisher
Trichy Commercial Private Limited
On the store since
Dec 2025
Under a year
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
3 MB
Also listed in
Utilities
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
0.0 ★
0 ratings
Measured
Ratings
0
Measured
About STIPA - Speech Intelligibility
STIPA is the professional speech intelligibility measurement tool trusted by audio engineers, fire safety professionals, and acoustic consultants worldwide. Fully compliant with IEC 60268-16:2011 standards, STIPA delivers laboratory-grade accuracy in a portable iOS app.
PROFESSIONAL STI MEASUREMENT
Accurately measure the Speech Transmission Index of any public address system, voice evacuation system, or audio installation. STIPA uses the standardized modulation transfer function method across seven octave bands to deliver results you can trust for compliance documentation and system optimization.
COMPLIANCE READY
Meet the requirements of critical industry standards:
- IEC 60268-16:2011 Speech Transmission Index measurement
- NFPA 72 voice intelligibility requirements for fire alarm systems
- ANSI/ASA S12.60 classroom acoustics verification
- ADA accessibility compliance for educational facilities
PROFESSIONAL FEATURES
Real-Time Analysis
- Live STI value with IEC qualification display
- Seven octave band level monitoring (125Hz to 8kHz)
- Modulation index visualization for each frequency band
- Signal quality indicators for measurement confidence
Comprehensive Reporting
- Generate professional PDF reports for client documentation
- Export data in CSV format for further analysis
- JSON export for system integration
- Include location names, notes, and timestamps
Measurement Flexibility
- Support for external calibrated microphones
- Adjustable measurement duration for various environments
- Built-in STIPA test signal generator
- Works with any PA system or audio source
Data Management
- Save unlimited measurements with searchable history
- Compare results across locations and time
- Track system performance over multiple visits
- Statistics dashboard for trend analysis
WHO USES STIPA
Fire Safety Professionals
Test voice evacuation systems and emergency communication systems for NFPA 72 compliance. Document speech intelligibility across all acoustically distinguishable spaces.
AV Integrators
Commission PA systems with confidence. Verify speech clarity meets client specifications and industry benchmarks. Troubleshoot problem areas with octave band analysis.
Acoustic Consultants
Assess room acoustics and their impact on speech transmission. Identify reverberation and noise issues affecting intelligibility. Provide quantitative data for remediation recommendations.
Educational Facility Managers
Ensure classroom audio systems meet ANSI S12.60 requirements. Document ADA compliance for hearing accessibility. Optimize learning environments with data-driven decisions.
Houses of Worship
Verify sermon intelligibility throughout the sanctuary. Optimize sound system performance for clear communication. Ensure all congregants can hear spoken content clearly.
UNDERSTANDING STI RESULTS
- Excellent (0.75-1.00): Outstanding speech clarity
- Good (0.60-0.75): Clear and intelligible speech
- Fair (0.45-0.60): Acceptable with some difficulty
- Poor (0
PROFESSIONAL STI MEASUREMENT
Accurately measure the Speech Transmission Index of any public address system, voice evacuation system, or audio installation. STIPA uses the standardized modulation transfer function method across seven octave bands to deliver results you can trust for compliance documentation and system optimization.
COMPLIANCE READY
Meet the requirements of critical industry standards:
- IEC 60268-16:2011 Speech Transmission Index measurement
- NFPA 72 voice intelligibility requirements for fire alarm systems
- ANSI/ASA S12.60 classroom acoustics verification
- ADA accessibility compliance for educational facilities
PROFESSIONAL FEATURES
Real-Time Analysis
- Live STI value with IEC qualification display
- Seven octave band level monitoring (125Hz to 8kHz)
- Modulation index visualization for each frequency band
- Signal quality indicators for measurement confidence
Comprehensive Reporting
- Generate professional PDF reports for client documentation
- Export data in CSV format for further analysis
- JSON export for system integration
- Include location names, notes, and timestamps
Measurement Flexibility
- Support for external calibrated microphones
- Adjustable measurement duration for various environments
- Built-in STIPA test signal generator
- Works with any PA system or audio source
Data Management
- Save unlimited measurements with searchable history
- Compare results across locations and time
- Track system performance over multiple visits
- Statistics dashboard for trend analysis
WHO USES STIPA
Fire Safety Professionals
Test voice evacuation systems and emergency communication systems for NFPA 72 compliance. Document speech intelligibility across all acoustically distinguishable spaces.
AV Integrators
Commission PA systems with confidence. Verify speech clarity meets client specifications and industry benchmarks. Troubleshoot problem areas with octave band analysis.
Acoustic Consultants
Assess room acoustics and their impact on speech transmission. Identify reverberation and noise issues affecting intelligibility. Provide quantitative data for remediation recommendations.
Educational Facility Managers
Ensure classroom audio systems meet ANSI S12.60 requirements. Document ADA compliance for hearing accessibility. Optimize learning environments with data-driven decisions.
Houses of Worship
Verify sermon intelligibility throughout the sanctuary. Optimize sound system performance for clear communication. Ensure all congregants can hear spoken content clearly.
UNDERSTANDING STI RESULTS
- Excellent (0.75-1.00): Outstanding speech clarity
- Good (0.60-0.75): Clear and intelligible speech
- Fair (0.45-0.60): Acceptable with some difficulty
- Poor (0
Latest updates
1.0.3
Input channel selection now works correctly
- Version 1.0.2 added the ability to choose a channel on a multichannel USB / Lightning audio interface, but the app still analyzed the operating system's default input - the mixed/main signal - instead of the channel you picked. This update makes the selection take effect, on both iPhone/iPad and Mac.
What was fixed:
- The chosen input channel is now routed directly from the audio interface into the analyzer, so only that channel is measured - not a downmix of the whole device.
- Your channel choice is remembered between sessions and restored automatically when you reconnect your interface.
