Pitch Witch vs Sensor Technology Engineering
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pitch Witch
This free, open-source app helps users train their speaking voice by monitoring pitch and resonance in real-time. It offers advanced features like multiple pitch estimation algorithms and customizable visual guides for pitch range. Users can save, analyze, and export recordings for later review.
- Live voice pitch monitoring
- Multiple pitch estimation algorithms
- Formant estimation for resonance analysis
- Customizable visual pitch guidelines
- Save, analyze, and export recordings
- Pinch-to-zoom pitch chart
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A free and open source voice analysis app specifically geared toward aiding speaking voice pitch and resonance training. The app is intended to be a useful tool for those who are already familiar with the concepts of pitch and resonance and how they affect the sound of speech. Features • Monitor the pitch of your voice live from your device's microphone. • Switch between multiple pitch estimation algorithms (Yin or IRAPT). • Enable formant estimation to analyze vocal resonance. • Pinch to zoom and pan around the pitch chart for a closer look. • Customize the visual guide lines to help stay within a certain pitch range. • Save recordings for later inspection and playback. • Play, analyze, export, share, rename, or delete saved recordings. • No ads or collection of data whatsoever. Recordings never leave the device unless explicitly shared to another app.
Sensor Technology Engineering
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The STE App is the Bluetooth-enabled application for mobile devices to connect with STE radiation detectors. It provides a real-time detection interface in support of Countering Weapons of Mass Destruction (CWMD) and Explosive Ordinance (EoD) Missions. The app contains several features, including radiation exposure, accumulated radiation dosage, geospatial data and a data sharing capability that are primarily used by emergency responders to allow them to take action quickly and decisively. STE App allows the user to connect the STE detectors to mobile devices using Bluetooth communication technology. It enables the user to stream the detector data (gamma and neutron) directly from the detector to a mobile device in real time. Device Connection: Each time the STE device is turned on, Bluetooth communications are enabled, and the device is available for connection for two minutes. If the pairing is successful, the user can view the real time data stream for gamma and neutron detection in the application. Once the device is found and linked to the app, the device ID will be automatically stored in the app. Data Streaming: After the successful connection, a waterfall graph and a display meter show the level of gamma detected in real-time, with options to select units such as CPS, µR/h, µrem/h, and µSv/h. STE detectors equipped with neutron detection are visible on the app and measure counts. Once the count rate exceeds the threshold (trip) value, the detector and mobile device will started alarming. Users can toggle between the screens to select various functions of the app. Geo-Mapping: The app has an intuitive interface with a basic navigation system. That will display the "trace history" of where the detector has been carried. If the device detects radiation and sounds an alarm, the map will trace that information with colors. The exact location and address will be recorded in the alarm data. Data Sharing: STE app compiles all the relevant data that can be shared via emails, SMS, and other methods available on the mobile device.
Screenshots
Verdict
The clearest difference is update cadence: Pitch Witch at every 9 days against Sensor Technology Engineering's every 7 months. On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Pitch Witch ships an update every 9 days, Sensor Technology Engineering every 7 months. The most recent releases landed on July 5, 2026 and September 15, 2026 respectively.
| Parameter | Pitch Witch | Sensor Technology Engineering |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 9 days — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | Privacy Research LLC | Sensor Technology Engineering |
In-app purchases
Pitch Witch
No in-app purchases
Sensor Technology Engineering
No in-app purchases
Questions
Is Pitch Witch free?
Is Sensor Technology Engineering free?
Do Pitch Witch or Sensor Technology Engineering have ads?
Which is updated more often, Pitch Witch or Sensor Technology Engineering?
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