---
title: "Lambda - Reviews, Revenue and Downloads in United Kingdom | Apple App Store"
description: "Musicians and Sound Engineers. Musical Notes and Frequencies and Wavelengths.  Now there's an app from dgApps to convert between them all.  The app features a sliding fader to dynamically change frequ"
---

# Lambda — United Kingdom

![Lambda App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/ea/b0/1d/eab01d16-79e2-0d6d-d74d-bfb36e13de0a/AppIcon-1x_U007epad-0-0-0-1-0-85-220-0.png/434x0w.png)

**Developer:** [Dave Guerin](https://apptail.io/developer/dave-guerin-uOkb) (Ireland)
**Category:** Utilities
**Rating:** 3.7/5 (6 ratings)
**Price:** £2.99
**Bundle ID:** ie.dgapps.lambda
**Store:** Apple App Store
**Country:** United Kingdom
**Version:** 5.0.0 (released 2026-05-01)
**Original Release:** 2011-05-05
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/gb/app/app/id434581690)
**AppTail Page:** [https://apptail.io/app/lambda-HXli/united-kingdom](https://apptail.io/app/lambda-HXli/united-kingdom)

## Lambda Description
Musicians and Sound Engineers. Musical Notes and Frequencies and Wavelengths.

Now there's an app from dgApps to convert between them all.

The app features a sliding fader to dynamically change frequency, wavelength and musical note, with locks to step through standard third octave frequencies or whole musical notes. 

There's a built in oscillator so you can hear the frequency, and a frequency tracker so the app can tell you the frequency. Both the oscillator and the frequency tracker display the audio waveform.

A settings section allows for different tuning standards, and variations in the speed of sound. Lambda can also receive calculated Speed of Sound in Air values from another dgApps app, Cair. Lambda is now a universal app, equally at home on an iPhone as on an iPad. In Split Mode on an iPad device, side by side with Cair, the calculated Speed of Sound in Air is passed in real time to the Lambda app.

Lambda allows you to share frequency/wavelength/note data via all the usual sharing methods.

## Lambda Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/ef/96/9e/ef969e9b-2523-6bff-c691-0217b9e0948d/iPhone_17_Pro_Max-1_Main_Screen.png/1320x2868.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/91/ee/93/91ee9364-1fd6-0398-0d87-2641c4f9e17b/iPhone_17_Pro_Max-2_Sine_Wave_Screen.png/1320x2868.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/c0/b9/33/c0b93355-01e7-5493-de63-3475947ced05/iPhone_17_Pro_Max-3_Harmonics_Screen.png/1320x2868.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/4a/5f/21/4a5f2117-d354-5dc3-6733-0110882101ab/iPhone_17_Pro_Max-4_Share_Screen.png/1320x2868.png)

## Lambda Rating Breakdown in United Kingdom
- 5 stars: 2 (33%)
- 4 stars: 2 (33%)
- 3 stars: 0 (0%)
- 2 stars: 2 (33%)
- 1 stars: 0 (0%)




## Lambda Discovered Keywords
- lambda

## Apps Similar to Lambda
- [WIFI Clip - Send Clipboard](https://apptail.io/app/wifi-clip-send-clipboard-qdIb/united-kingdom)
- [NMEAconnect](https://apptail.io/app/nmeaconnect-Uqhc/united-kingdom)
- [Spektroskop](https://apptail.io/app/spektroskop-qINc/united-kingdom)
- [Wavelength Calculator](https://apptail.io/app/wavelength-calculator-zWed/united-kingdom)
- [Sound Level Analyzer PRO](https://apptail.io/app/sound-level-analyzer-pro-bwwd/united-kingdom)
- [Particle Sense](https://apptail.io/app/particle-sense-ABRd/united-kingdom)
- [Progwhiz Hex Editor](https://apptail.io/app/progwhiz-hex-editor-MUIf/united-kingdom)
- [AudioCalc](https://apptail.io/app/audiocalc-Vhqg/united-kingdom)
- [Calc Pro HD - Top Calculator!](https://apptail.io/app/calc-pro-hd-top-calculator-apkl/united-kingdom)
- [Audio QR](https://apptail.io/app/audio-qr-kuFp/united-kingdom)

## Lambda Available In
- [United Kingdom](https://apptail.io/app/lambda-HXli/united-kingdom)
- [Norway](https://apptail.io/app/lambda-HXli/norway)
- [Romania](https://apptail.io/app/lambda-HXli/romania)
- [United States](https://apptail.io/app/lambda-HXli/united-states)
- [Germany](https://apptail.io/app/lambda-HXli/germany)
- [Belgium](https://apptail.io/app/lambda-HXli/belgium)
- [Belarus](https://apptail.io/app/lambda-HXli/belarus)
- [Canada](https://apptail.io/app/lambda-HXli/canada)
- [Switzerland](https://apptail.io/app/lambda-HXli/switzerland)
- [China](https://apptail.io/app/lambda-HXli/china)
- [Colombia](https://apptail.io/app/lambda-HXli/colombia)
- [Czechia](https://apptail.io/app/lambda-HXli/czechia)
- [Denmark](https://apptail.io/app/lambda-HXli/denmark)
- [Dominican Republic](https://apptail.io/app/lambda-HXli/dominican-republic)
- [Algeria](https://apptail.io/app/lambda-HXli/algeria)
- [Ecuador](https://apptail.io/app/lambda-HXli/ecuador)
- [Egypt](https://apptail.io/app/lambda-HXli/egypt)
- [Spain](https://apptail.io/app/lambda-HXli/spain)
- [Finland](https://apptail.io/app/lambda-HXli/finland)
- [France](https://apptail.io/app/lambda-HXli/france)
- [Greece](https://apptail.io/app/lambda-HXli/greece)
- [Hong Kong SAR China](https://apptail.io/app/lambda-HXli/hong-kong)
- [Hungary](https://apptail.io/app/lambda-HXli/hungary)
- [Indonesia](https://apptail.io/app/lambda-HXli/indonesia)
- [Ireland](https://apptail.io/app/lambda-HXli/ireland)
- [Israel](https://apptail.io/app/lambda-HXli/israel)
- [India](https://apptail.io/app/lambda-HXli/india)
- [Italy](https://apptail.io/app/lambda-HXli/italy)
- [Japan](https://apptail.io/app/lambda-HXli/japan)
- [South Korea](https://apptail.io/app/lambda-HXli/south-korea)
- [Kuwait](https://apptail.io/app/lambda-HXli/kuwait)
- [Kazakhstan](https://apptail.io/app/lambda-HXli/kazakhstan)
- [Lebanon](https://apptail.io/app/lambda-HXli/lebanon)
- [Sri Lanka](https://apptail.io/app/lambda-HXli/sri-lanka)
- [Mexico](https://apptail.io/app/lambda-HXli/mexico)
- [Malaysia](https://apptail.io/app/lambda-HXli/malaysia)
- [Nigeria](https://apptail.io/app/lambda-HXli/nigeria)
- [Netherlands](https://apptail.io/app/lambda-HXli/netherlands)
- [New Zealand](https://apptail.io/app/lambda-HXli/new-zealand)
- [Peru](https://apptail.io/app/lambda-HXli/peru)
- [Philippines](https://apptail.io/app/lambda-HXli/philippines)
- [Pakistan](https://apptail.io/app/lambda-HXli/pakistan)
- [Poland](https://apptail.io/app/lambda-HXli/poland)
- [Portugal](https://apptail.io/app/lambda-HXli/portugal)
- [Russia](https://apptail.io/app/lambda-HXli/russia)
- [Saudi Arabia](https://apptail.io/app/lambda-HXli/saudi-arabia)
- [Sweden](https://apptail.io/app/lambda-HXli/sweden)
- [Singapore](https://apptail.io/app/lambda-HXli/singapore)
- [Thailand](https://apptail.io/app/lambda-HXli/thailand)
- [Türkiye](https://apptail.io/app/lambda-HXli/turkey)
- [Taiwan](https://apptail.io/app/lambda-HXli/taiwan)
- [Ukraine](https://apptail.io/app/lambda-HXli/ukraine)
- [Vietnam](https://apptail.io/app/lambda-HXli/vietnam)
- [United Arab Emirates](https://apptail.io/app/lambda-HXli/united-arab-emirates)
- [South Africa](https://apptail.io/app/lambda-HXli/south-africa)
- [Argentina](https://apptail.io/app/lambda-HXli/argentina)
- [Austria](https://apptail.io/app/lambda-HXli/austria)
- [Australia](https://apptail.io/app/lambda-HXli/australia)
- [Azerbaijan](https://apptail.io/app/lambda-HXli/azerbaijan)

---

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