# Flat or Sharp vs SpectralLab

The clearest difference is price: Flat or Sharp at Free against SpectralLab's $4.99. SpectralLab's advantage is in-app purchases (none vs 7). On ads, device support and iOS requirement there is nothing between them.

Flat or Sharp is free to download; SpectralLab costs $4.99 up front. Flat or Sharp sells 7 in-app purchases, starting at $2.99 per month. SpectralLab asks for nothing beyond the download.

## The numbers

| Metric | Flat or Sharp | SpectralLab |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/flat-or-sharp/id1522100449/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 65 months | — |
| Monetization | Freemium | — |
| Size | 4 MB | 2 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Euphorophonics, LLC](https://appshunter.io/developer/1464810513) | [Martin Adler](https://appshunter.io/developer/1896354791) |

## What reviewers say

### Flat or Sharp

[App page](https://appshunter.io/ios/app/flat-or-sharp/id1522100449)

This app helps you improve your musical ear by training you to identify flat or sharp intonation in musical intervals. It offers customizable difficulty levels, various interval types, and detailed progress tracking to guide your learning journey.

**Highlights:** Identify flat/sharp intonation, All musical intervals included, Customizable difficulty levels, Melodic and harmonic intervals, Progress tracking and streaks, Practice suggestions and tips

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flat or Sharp Premium (Monthly) | $2.99 | per month |
| Flat or Sharp Premium (Annual) | $14.99 | per year |
| Both Interval Directions | $0.99 | one-time |
| Remove Banner Ad | $0.99 | one-time |
| All Duration Options | $1.99 | one-time |
| All Accuracy Options | $2.99 | one-time |
| BUNDLE - All Premium Options | $4.99 | one-time |


### SpectralLab

[App page](https://appshunter.io/ios/app/spectrallab/id6797335473)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Flat or Sharp free?

Flat or Sharp is free to download, with in-app purchases available.

### Is SpectralLab free?

SpectralLab costs $4.99, with no in-app purchases.

### Do Flat or Sharp or SpectralLab have ads?

Neither Flat or Sharp nor SpectralLab shows ads.

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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.*