# Lambda vs TPE Amplifier

The clearest difference is price: TPE Amplifier at Free against Lambda's $2.99. TPE Amplifier also leads on iOS requirement (12.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

TPE Amplifier is free to download; Lambda costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Lambda | TPE Amplifier |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lambda/id434581690/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 54 months | — |
| Monetization | Paid | — |
| Size | 6 MB | 5 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [dgApps](https://appshunter.io/developer/357488432) | [SEIKAKU](https://appshunter.io/developer/860317297) |

## What reviewers say

### Lambda

[App page](https://appshunter.io/ios/app/lambda/id434581690)

This app helps musicians and sound engineers convert between musical notes, frequencies, and wavelengths. It features a dynamic fader, built-in oscillator, and frequency tracker with waveform display. Customize tuning standards and speed of sound for precise audio analysis.

**Highlights:** Convert notes, frequencies, wavelengths, Dynamic fader for real-time adjustment, Built-in oscillator with waveform, Frequency tracker with waveform, Customizable tuning standards, Adjustable speed of sound, Share data via standard methods

**In-app purchases:** none


### TPE Amplifier

[App page](https://appshunter.io/ios/app/tpe-amplifier/id6756290732)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Lambda free?

Lambda costs $2.99, with no in-app purchases.

### Is TPE Amplifier free?

TPE Amplifier is free to download, with no in-app purchases.

### Do Lambda or TPE Amplifier have ads?

Neither Lambda nor TPE Amplifier 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.*