# SpringSound vs Lagrange

The clearest difference is rating: Lagrange at 4.8 against SpringSound's 4.2. Lagrange also leads on update cadence (every 2 weeks vs every 9 months) and review sentiment (95% vs 70%). SpringSound's advantage is price ($2.99 vs $8.00). On ads, in-app purchases, monetization model and device support there is nothing between them.

SpringSound costs $2.99 and Lagrange $8.00 up front. Neither carries in-app purchases, so what you see is what you pay.

Lagrange holds the better App Store score, 4.8 against 4.2. Both are backed by a comparable volume of ratings — 19 and 57 respectively. Written reviews point the same way: 70% of SpringSound's written reviews are positive against 95% of Lagrange's.

SpringSound ships an update every 9 months, Lagrange every 2 weeks. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | SpringSound | Lagrange |
| --- | --- | --- |
| Price | **$2.99** | $8.00 |
| Rating | [4.2 (19 ratings)](https://appshunter.io/ios/app/springsound/id866583243/reviews) | **[4.8 (57 ratings)](https://appshunter.io/ios/app/lagrange-auv3-plug-in-synth/id1479000758/reviews)** |
| Number of ratings | 19 | **57** |
| Positive reviews | 70.0% of reviews | **95.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 weeks** |
| Monetization | Paid | Paid |
| Size | 30 MB | 8 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christophe Duquesne](https://appshunter.io/developer/647714834) | [iceWorks, Inc.](https://appshunter.io/developer/347507439) |

## What reviewers say

### SpringSound

[App page](https://appshunter.io/ios/app/springsound/id866583243)

This app is a physical-modeling audio synthesizer that simulates sound through the interaction of springs, masses, and activators. It offers detailed control over various physical parameters and comes with a large library of presets. It can be used as a sound generator or effect, and supports MIDI and expressive controllers.

**Highlights:** Physical modeling sound synthesis, Detailed control of physical parameters, Large set of sound presets, Audio-In effect capability, MIDI and MPE support, iOS Continuum Remote integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Lagrange

[App page](https://appshunter.io/ios/app/lagrange-auv3-plug-in-synth/id1479000758)

This app is a hybrid synthesizer that simplifies sound creation by using oscillator algorithms to manage complex parameters. It focuses on quickly achieving desired sounds by selecting the appropriate oscillator type.

**Highlights:** AUv3-compatible synthesizer, Simplified sound creation, Oscillator algorithms, Quick sound selection, Hybrid synthesis

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

**In-app purchases:** none


## Frequently asked questions

### Is SpringSound free?

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

### Is Lagrange free?

Lagrange costs $8.00, with no in-app purchases.

### Which has better reviews, SpringSound or Lagrange?

Lagrange is rated higher. SpringSound averages 4.2 out of 5 from 19 ratings, while Lagrange averages 4.8 from 57 ratings.

### Do SpringSound or Lagrange have ads?

Neither SpringSound nor Lagrange shows ads.

### Which is updated more often, SpringSound or Lagrange?

SpringSound ships an update every 9 months, and Lagrange every 2 weeks. Most recently, SpringSound was updated on November 6, 2026 and Lagrange on November 7, 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.*