# STIPA — Speech Intelligibility Tester > Professional speech intelligibility testing and analysis tool for iOS devices. (iPhone/iPad app by Andrew Smith.) - Source: https://appshunter.io/ios/app/stipa/id582112259 (this page in markdown: same URL + `.md`) - Developer: [Andrew Smith](https://appshunter.io/developer/291822462) - Category: Reference, Utilities - Price: $49.99 with in-app purchases - Rating: 4.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 13.0 · 20 MB - Languages: American English, French (France), German (Germany), Japanese, Polish, Chinese (Simplified, China), European Spanish, Swedish - Released: 2012-12-20 - Data updated: 2026-08-14 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/stipa/id582112259/reviews.md ## What is STIPA? STIPA is the most advanced speech intelligibility process available. It is rapidly being accepted as the gold standard in speech intelligibility, and is required by NFPA fire codes in the United States and other countries. Now, you can have STIPA on your iOS device. Our version is fully compliant with v4 of the standard (the most recent one), and is applicable for use with all NFPA code work, and also meets are international standards including IEC 60268-16:2011. STIPA works by analyzing a special test signal, which will play right from the iOS device, or it can be downloaded from our website and burned to a CD or played using an audio player. Also, you can upgrade STIPA to STIPA Pro from the setup screen of the app, to add octave band LEQ analysis, full detail reporting, and save / recall and export of results.(See "Optional" images). Either way, you are getting the same powerful and accurate speech intelligibility test. Applications for STIPA include testing fire evacuation announcement systems, school classroom ADA testing, and house of worship speech testing. You can use STIPA with the internal mic of your iOS device, or use it with our iTestMic or iAudioInterface2. Also see our other great professional audio apps, including AudioTools, the audio professional's best set of test & measurement tools. ## Key features - Speech intelligibility testing - NFPA and IEC standard compliant - Analyzes test signals - Optional Pro upgrade - Save, recall, and export results - Use with internal mic or external devices ## Pricing and in-app purchases Base price: $49.99. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | STIPA Pro Upgrade | $149.99 | one-time | ## Frequently asked questions about STIPA ### What is STIPA used for? STIPA is used to test speech intelligibility, which is crucial for ensuring clear announcements in environments like fire evacuation systems, classrooms, and public address systems in houses of worship. It helps verify that spoken information can be understood by listeners. ### Is STIPA compliant with standards? Yes, STIPA is fully compliant with v4 of the standard and meets international standards including IEC 60268-16:2011. It is also required by NFPA fire codes in the United States and other countries. ### How does STIPA work? STIPA works by analyzing a special test signal that can be played directly from your iOS device or from external sources like a CD. The app then processes this signal to provide a speech intelligibility score. ### What features are included in STIPA Pro? The optional STIPA Pro upgrade adds octave band LEQ analysis, full detail reporting, and the ability to save, recall, and export your test results. This provides more in-depth data and management capabilities. ### Can I use STIPA with external microphones? Yes, you can use STIPA with the internal microphone of your iOS device. For more professional use, it is also compatible with external devices like the iTestMic or iAudioInterface2. ### What devices does STIPA support? STIPA is supported on iPhone, iPad, and iPod devices. It requires iOS 4.0 or later and was last updated on December 22, 2025. ### What is the price of STIPA? STIPA is a paid application priced at $49.99. There are also optional in-app purchases for the STIPA Pro features. ### Does STIPA have ads? No, STIPA does not contain advertisements. It is a professional tool designed for accurate measurement and analysis without interruption. ## Version history (last 5 releases) ### 4.0 — 2025-12-22 -Bug fixes and stability improvements ### 3.9 — 2025-11-24 -Updated for new iOS devices -Bug fixes and stability improvements ### 3.8 — 2024-11-27 -Updated for latest iOS devices and calibrations -Bug fixes and operational improvements -Added Restore Purchases option to settings gear menu ### 3.7 — 2024-10-20 -Updated for latest iOS devices and calibrations -Bug fixes and operational improvements ### 3.6 — 2024-07-10 -Updated for latest iOS devices and calibrations -Bug fixes and operational improvements ## Apps similar to STIPA | App | Rating | Price | Category | | --- | --- | --- | --- | | [Tree Identifier: TreeBarkId](https://appshunter.io/ios/app/tree-identifier-treebarkid/id6747532583) | 4.3 (70) | Free | Reference | | [Railmap for Open Railway Map](https://appshunter.io/ios/app/railmap-for-open-railway-map/id1374554550) | 4.7 (692) | $2.99 | Reference | ## More apps by Andrew Smith - [Speaker Polarity](https://appshunter.io/ios/app/speaker-polarity/id293263027) - [SPL](https://appshunter.io/ios/app/spl/id293573990) - [RTA](https://appshunter.io/ios/app/rta/id298839433) - [FFT](https://appshunter.io/ios/app/fft/id298840058) - [RT60](https://appshunter.io/ios/app/rt60/id298840320) - [Generator](https://appshunter.io/ios/app/generator/id298840802) All apps by Andrew Smith: https://appshunter.io/developer/291822462 ## Related topics [aurapantry](https://appshunter.io/ios/topics/aurapantry) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-14.*