# e vs Music Practice Tool

The clearest difference is review sentiment: e at 80% against Music Practice Tool's 44%. Music Practice Tool's advantage is in-app purchases (none vs 1) and price ($0.99 vs $1.99). On update cadence, ads, monetization model and device support there is nothing between them.

e costs $1.99 and Music Practice Tool $0.99 up front. e sells 1 one-off in-app purchase. Music Practice Tool asks for nothing beyond the download.

e ships an update every 8 months, Music Practice Tool every 13 months. Both last shipped on October 23, 2026.

## The numbers

| Metric | e | Music Practice Tool |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/e-scope-3-in-1/id660574048/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **80.0% of reviews** | 44.4% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 13 months |
| Monetization | Paid | Paid |
| Size | 2 MB | 18 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [e-skett Corp.](https://appshunter.io/developer/591591895) | [CASIO COMPUTER CO., LTD.](https://appshunter.io/developer/456569836) |

## What reviewers say

### e

[App page](https://appshunter.io/ios/app/e-scope-3-in-1/id660574048)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Automatic measurement option | $1.99 | one-time |


### Music Practice Tool

[App page](https://appshunter.io/ios/app/music-practice-tool/id927833146)

This app helps wind and string instrument players improve their practice sessions. It combines a metronome, tuner, and recorder on a single screen for efficient use. Objectively review your performance through recordings to identify areas for improvement.

**Highlights:** Integrated metronome, tuner, and recorder, Single-screen operation for efficiency, Record and playback for performance review, Objective self-assessment of playing, Customizable color themes, Automatic screen orientation flip

**In-app purchases:** none


## Frequently asked questions

### Is e free?

e costs $1.99, and also offers in-app purchases.

### Is Music Practice Tool free?

Music Practice Tool costs $0.99, with no in-app purchases.

### Do e or Music Practice Tool have ads?

Neither e nor Music Practice Tool shows ads.

### Which is updated more often, e or Music Practice Tool?

e ships an update every 8 months, and Music Practice Tool every 13 months. Most recently, e was updated on October 23, 2026 and Music Practice Tool on October 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*