Lambda app icon

Apps Like Lambda for iPhone and iPad

Convert notes, frequencies, and wavelengths.

The app converts between musical notes, frequencies, and wavelengths. It includes an oscillator to hear frequencies and a frequency tracker that displays the audio waveform.

by Dave Guerin★ 5.01 ratingsUtilities$2.99Data updated 2026-09-19

Lambda screenshots

Ranked alternatives

Showing 81–100 of 1,000 ranked alternatives.

  1. Dog Whistle & Clicker app icon

    Dog Whistle & Clicker

    Enacti Ventures Private Limited

    Train dogs with and

    Use the built-in dog with adjustable frequency up to 40000 Hz. Access a dog with multiple sound options. Follow training lessons for and training. Listen to animal sounds for guidance.

    ★ 4.4933 ratingsUtilitiesFreeData updated 2026-09-14
  2. Audio Spectrum Analyzer app icon

    Audio Spectrum Analyzer

    Black Cat Systems

    Audio frequencies displayed for analysis.

    The app displays audio frequencies up to 20 kHz on an iPad, iPhone, or iPod Touch. Users can adjust frequency span, FFT size, and apply filtering for smoothing.

    ★ 3.953 ratingsUtilities$3.99Data updated 2026-10-16
  3. Guitar Tuner & Tone Generator app icon

    Guitar Tuner & Tone Generator

    Harmony Network Group Limited

    Tune instruments with precision and accuracy

    Detects tuning notes for string instruments. Generates tones for practice. Displays precise frequencies in hertz. Supports , ukulele, violin, viola, and cello. Syncs with Apple Watch and iPhone.

    ★ 4.1938 ratingsMusicFreeData updated 2026-09-10
  1. Viola Tuner Basic app icon

    Viola Tuner Basic

    Pedro Daniel Macalupu Cumpen

    Tune with precise frequency display

    Adjust strings to precise frequencies with real-time Hz display. Access A4 temperaments between 392Hz and 466Hz. Use a virtual tuning fork and advanced settings for fine-tuning. Receive visual feedback via LED indicator and lit string display.

    ★ 4.1194 ratingsMusicFreeData updated 2026-09-15
  2. OnPitch - Vocal Pitch Monitor app icon

    OnPitch - Vocal Pitch Monitor

    Alena Kucharenka

    Sing and track your in real time

    Track sung notes in real time using a visual interface. Adjust accuracy with feedback. Practice singing exercises to improve control and confidence. Sync with audio sources for reference. Display note names and deviations during performance.

    ★ 4.5519 ratingsMusic$3.99Data updated 2026-10-24
  3. Clear Wave ° Water Eject app icon

    Clear Wave ° Water Eject

    Alexander Sazanovich

    Generate tones and track environmental noise

    Nd play tones across 50 to 20,000 Hertz. Adjust frequency, volume, and waveform in real-time. Measure ambient noise levels in decibels. Share noise data. Test speaker performance with sound waves.

    ★ 4.5223 ratingsMusicFreeData updated 2026-09-06
  4. FFT Plot app icon

    FFT Plot

    ONYX 3

    Real-time audio analysis for sound.

    The app provides real-time audio analysis for musicians and recording engineers. It enables portable, precision audio measurement and visualization for tasks like room or speaker tuning.

    ★ 4.890 ratingsMusic$9.99Data updated 2026-10-22
  5. ToneCircle app icon

    ToneCircle

    Arias Software LLC

    Visualize sound with color and notes

    Convert audio signals into visual representations by mapping frequencies to colors and musical notes. Display real-time patterns based on detected sounds. Allow users to explore and interact with music through visual feedback.

    ★ 4.812 ratingsUtilitiesFreeData updated 2026-09-29
  6. Cello Tuner Basic app icon

    Cello Tuner Basic

    Pedro Daniel Macalupu Cumpen

    Tune with exact frequency display

    Tune strings with precise frequency display in Hz. Adjust A4 temperaments between 392Hz and 466Hz. Includes tuning fork and advanced settings available via in- purchase. Features LED indicator for visual feedback and automatic string lighting.

    ★ 4.3215 ratingsMusicFreeData updated 2026-09-15
  7. singing bowl test app icon

    singing bowl test

    薇 张

    Sounds and detect frequency

    Sound frequencies with adjustable error range. Detect pitch, intonation, and interval of sounds. Compare frequency measurements for accuracy. Save and analyze sound data for musical analysis.

    ★ 5.01 ratingsMusicFreeData updated 2026-09-06
  8. Light Spectrometer Wavelength app icon

    Light Spectrometer Wavelength

    Contechity AB

    Measure , display and frequency

    Measure spectrum to determine dominant in nanometers, frequency in terahertz, and period length in femtoseconds. Analyze sources to identify primary color wavelengths and associated properties.

    ★ 4.071 ratingsUtilitiesFreeData updated 2026-09-06
  9. SynthMaster One for iPhone app icon

    SynthMaster One for iPhone

    KV331 YAZILIM LTD STI

    Design sounds with wavetable synth

    Create and customize sounds using a wavetable synth with an intuitive interface. Access 300 factory presets. Adjust waveforms, modulation, and effects. Save and recall custom patches. Limit to 8 voice polyphony.

    ★ 4.8332 ratingsMusicFreeData updated 2026-09-21
  10. hearEQ: Ear training for EQ app icon

    hearEQ: Ear training for EQ

    Ten Kettles Inc.

    Train ears with custom exercises from

    Practice ear with custom exercises based on user-selected songs. Identify notes, intervals, and chords. Track progress over time. Adjust difficulty levels. Export sessions for review.

    ★ 4.9617 ratingsMusic$5.99Data updated 2026-09-16
  11. SpectrumView app icon

    SpectrumView

    Oxford Wave Research Ltd.

    Visualize audio frequencies in real time

    Visualize real-time audio frequencies with a spectrogram and spectrum analyzer. Adjust sample rate and frequency resolution. Identify sound frequencies, measure vocal range, and analyze audio input.

    ★ 3.174 ratingsEducationFreeData updated 2026-09-08
  12. Signal Scripter and Generator app icon

    Signal Scripter and Generator

    Nicholas Wilson

    Generate tones, script signals, tune frequencies

    Generate custom frequency sounds with adjustable range and duration. Create scripts for repeating sequences of tones and durations. Tune through a range of frequencies with set durations for each.

    ★ 2.02 ratingsEntertainment$0.99Data updated 2026-09-08
  13. Spectrum Analyzer RTA app icon

    Spectrum Analyzer RTA

    ONYX 3

    Real-time audio analysis for sound.

    The app provides real-time audio analysis for musicians and recording engineers. It offers octave band analysis, FFT plots, and a spectrograph for sound visualization and measurement.

    ★ 4.367 ratingsMusic$19.99Data updated 2026-09-25
  14. Acoustic Guitar Tuner Basic app icon

    Acoustic Guitar Tuner Basic

    Pedro Daniel Macalupu Cumpen

    Tune strings with visual feedback

    Tune strings with real-time pitch display in Hz. Adjust A4 calibration between 415 Hz and 466 Hz. Use tuning fork feature and advanced settings via in- purchase. LED indicator highlights tuned strings. Supports standard and drop D tunings.

    ★ 4.5562 ratingsMusicFreeData updated 2026-09-08
  15. Ultrasonic Cleaner app icon

    Ultrasonic Cleaner

    Ana Danilov

    Generate tones and control output

    Allows users to generate tones across a 0 to 20,000 hertz range. It includes preloaded sounds for various uses. Users can switch audio output between device speakers and external outputs. The provides visualizations of sound waves in real time.

    ★ 4.7612 ratingsUtilitiesFreeData updated 2026-09-06

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.