e vs Touch Tuner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
e
This app combines an oscilloscope, FFT analyzer, and signal generator. It allows real-time observation of audio device frequency characteristics and waveform analysis. Features include multiple oscilloscope modes, detailed FFT spectrum analysis, and various signal generation options.
- Oscilloscope with Normal, Trigger, and Single modes
- FFT analyzer with peak level, frequency, and THD display
- Signal generator for sine waves, white noise, and sweeps
- Real-time FFT synchronization sweep mode
- Screen capture and save functionality
- Adjustable sensitivity and time span
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Three tools (oscilloscope, FFT analyzer (spectrum analyzer), signal generator) are included in the e-scope 3-in-1. Please take a look at this video. Basic functions: http://youtu.be/WPm4Dbz0WAo Automatic measurement add-on: http://youtu.be/K6_stq_t2zQ It can observe the frequency characteristics of audio devices using an FFT analyzer and a signal generator. Observation of frequency characteristics in real time is possible by using the FFT synchronization sweep mode. inputs are acquired via the built-in microphone or headset connector. -Oscilloscope The oscilloscope has three modes. * Normal mode: It is suited to observe music waveforms. * Trigger mode: This mode is suitable for repeated waveforms such as sine wave. You can observe waveforms in stationary condition. * Single mode: This mode is suitable for observing one-time waveform such as impact sound. You can change the sensitivity and time span by pinch out and pinch in. -FFT analyzer It is possible to analyze the frequency spectrum of an input signal. The peak level and the frequency are displayed at the top of the screen. The display can also be used as a simple frequency counter when you enter a single signal. In addition, the THD (Total Harmonic Distortion) value is displayed at the bottom left of the screen. By pressing the resolution button, you can select the frequency resolution free three types. When you press the peak hold button, the maximum value of the signal that you are currently viewing is displayed in a red line. -Signal generator The signal generator can be used to generate a signal of four types: Sine wave of 1Hz to 20kHz, White noise, Linear sweep and Log sweep ranging from 20Hz to 20KHz. When you tap the area that displays the frequency or sweep time range, a picker will appear. Please set the appropriate numbers in it. By using the mode [optimized for FFT], it can automatically change to a frequency with highest FFT accuracy. Please use the feature if you want to accurately measure the THD. While the frequency is displayed, it will be ignored when you enter 0000. During the FFT synchronization sweep mode, when you enter 000 as the display start time for the sweep time display, the FFT synchronization sweep mode will be activated. It will change the frequency at high speed in FFT analysis unit time (less than 0.1 seconds) . It is possible to observe the frequency characteristic in real time in this mode. When you press the Copy button at any mode, you can capture screen and save it to a camera roll.
Touch Tuner
This app offers precise tuning for musicians with a visual cent meter, rotating pitch dial, and real-time waveform display. Customize the interface with adjustable layouts, colors, and wallpapers for an enjoyable user experience.
- Accurate cent meter for pitch deviation
- Dynamically rotating pitch dial
- Real-time waveform display
- Customizable interface layout and color
- Chromatic tuner with adjustable sensitivity
- Selectable classical temperament tuning methods
- Pitch pipe mode
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〓 Intuitive, enjoyable operation 〓 Elegant, customisable interface 〓 Fast, accurate pitch response ◎ Developed for musicians by a leading musical instrument manufacturer. ◎ Designed for iOS 10, with a clean, elegant interface. ===================================== ● Matching Touch Metronome app also available! ===================================== ■Key strengths 1: Visibility - Cent meter accurately indicates the deviation from the pitch - Dynamically rotating pitch dial with 12 semitone scale - Real-time waveform display provides a visual indication of the input sound - Strobe illumination with attractive light and rotation effect - Lamp display immediately shows the current pitch ■Key strengths 2: Customisability - Freely adjustable interface layout and colour - Amusing ‘auto-layout’ mode - Selectable wallpaper background with accent flash ■Key strengths 3: Functionality - Highest level of pitch accuracy possible with an iPhone/iPad - Accuracy of detection within ±0.1 cent (Range ±50 cent) - Detection range from E0 to E9 (in case of A4=440Hz) - A4 calibration range from 392 to 466 Hz - Chromatic tuner (Automatic/Manual switchable) - Adjustable sensitivity for optimising the detection accuracy - Ability to select classical temperament tuning methods (7 types) - Simple, one-touch operation to switch between tuner and pitch pipe modes - SETTINGS - Initialize: Reset settings and the screen layout Temperament: Equal / Pythagorean / Pure (Major) / Pure (Minor) / Meantone/ Werckmeister III / Kirnberger III Notation: Standard / # / b Tuning sensitivity: Slider control Wallpaper: Camera / Camera Roll / Parallax / Brightness Show/Hide: Strobe / Circles / Cent meter / Detected frequency Theme Color: White / Black Octave Notation: A4=440Hz / A3=440Hz Rotational Direction of the Strobe: Clockwise / Counterclockwise Swipe Direction (Pitch up): Left/Down, Right/Up Lock: On / Off Auto Layout: On / Off - HELP - Outline of Operation / Detail of Operation / Troubleshooting / Support Link
Screenshots
Verdict
The clearest difference is rating: Touch Tuner at 4.1 against e's 3.0. Touch Tuner also leads on in-app purchases (none vs 1) and ratings volume (7 vs 1). e's advantage is review sentiment (80% vs 43%). On update cadence, ads, monetization model 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
e costs $1.99 and Touch Tuner $0.99 up front. e sells 1 one-off in-app purchase. Touch Tuner asks for nothing beyond the download.
Touch Tuner holds the better App Store score, 4.1 against 3.0. That said, the two scores are not equally well evidenced: Touch Tuner has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 80% of e's written reviews are positive against 43% of Touch Tuner's, so the app with the better star average is not the one people write more warmly about.
e ships an update every 8 months, Touch Tuner every 6 months. The most recent releases landed on October 23, 2026 and October 12, 2026 respectively.
| Parameter | e | Touch Tuner |
|---|---|---|
| Price | $1.99 | $0.99 — better |
| Rating | 3.0 (1 ratings) | 4.1 (7 ratings) — better |
| Positive reviews | 80.0% of reviews — better | 43.5% of reviews |
| Number of ratings | 1 | 7 — better |
| Update frequency | Every 8 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 2 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | e-skett Corp. | Kawai Musical Instruments Manufacturing Co., Ltd. |
Customer experience
e
Touch Tuner
In-app purchases
e
- Automatic measurement option$1.99
Touch Tuner
No in-app purchases
