# AudioCalc vs Lambda

The clearest difference is review sentiment: Lambda at 80% against AudioCalc's 33%. Lambda also leads on rating (5.0 vs 3.0). AudioCalc's advantage is update cadence (every 7 months vs every 54 months) and iOS requirement (7.0 vs 15.6). On price, ratings volume, ads and in-app purchases there is nothing between them.

AudioCalc costs $2.99 and Lambda $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Lambda holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 33% of AudioCalc's written reviews are positive against 80% of Lambda's.

AudioCalc ships an update every 7 months, Lambda every 54 months. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | AudioCalc | Lambda |
| --- | --- | --- |
| Price | $2.99 | $2.99 |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/audiocalc/id294447976/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lambda/id434581690/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 33.3% of reviews | **80.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 54 months |
| Monetization | Paid | Paid |
| Size | 3 MB | 6 MB |
| Requires iOS | **7.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nelcea](https://appshunter.io/developer/1694672221) | [dgApps](https://appshunter.io/developer/357488432) |

## What reviewers say

### AudioCalc

[App page](https://appshunter.io/ios/app/audiocalc/id294447976)

This tool provides audio-specific conversion formulas for HiFi enthusiasts, home theater buffs, and audio professionals. It includes converters for frequency, band, delay, volume, and room modes, aiding in loudspeaker positioning, EQ setup, and room acoustics. Supports both imperial and metric units.

**Highlights:** Frequency, period, and wavelength converter, Parametric EQ band setup tool, Speaker distance and delay calculator, Amplifier power calculation, Room mode response computation, Imperial and metric unit support

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is AudioCalc free?

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

### Is Lambda free?

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

### Which has better reviews, AudioCalc or Lambda?

Lambda is rated higher. AudioCalc averages 3.0 out of 5 from 1 ratings, while Lambda averages 5.0 from 1 ratings.

### Do AudioCalc or Lambda have ads?

Neither AudioCalc nor Lambda shows ads.

### Which is updated more often, AudioCalc or Lambda?

AudioCalc ships an update every 7 months, and Lambda every 54 months. Most recently, AudioCalc was updated on September 21, 2026 and Lambda on September 17, 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.*