# KASPAR vs Lagrange

The clearest difference is price: Lagrange at $8.00 against KASPAR's $19.99. Lagrange also leads on update cadence (every 2 weeks vs every 16 months) and review sentiment (95% vs 75%). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

KASPAR costs $19.99 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 4.6. Both are backed by a comparable volume of ratings — 94 and 57 respectively. Written reviews point the same way: 75% of KASPAR's written reviews are positive against 95% of Lagrange's.

KASPAR ships an update every 16 months, Lagrange every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | KASPAR | Lagrange |
| --- | --- | --- |
| Price | $19.99 | **$8.00** |
| Rating | [4.6 (94 ratings)](https://appshunter.io/ios/app/kaspar/id1245045964/reviews) | **[4.8 (57 ratings)](https://appshunter.io/ios/app/lagrange-auv3-plug-in-synth/id1479000758/reviews)** |
| Number of ratings | **94** | 57 |
| Positive reviews | 75.0% of reviews | **95.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 2 weeks** |
| Monetization | Paid | Paid |
| Size | 64 MB | 8 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yonac Inc.](https://appshunter.io/developer/288670023) | [iceWorks, Inc.](https://appshunter.io/developer/347507439) |

## What reviewers say

### KASPAR

[App page](https://appshunter.io/ios/app/kaspar/id1245045964)

This powerful synthesizer app offers 8 polyphonic engines with extensive morphing, layering, and modulation capabilities. Create complex sounds with 24 oscillators, 8 filters, and built-in stereo effects. It integrates seamlessly with DAWs and other music apps.

**Highlights:** 8 polyphonic synth engines, Multi-Engine Automorphing, Extensive modulation system, Poly aftertouch support, 2 stereo FX busses, Audio Unit plugin integration, Inter-App Audio and Audiobus support

**In-app purchases:** none

**What reviewers like**

- ✨ Incredible power and depth
- 🔊 Amazing and unique sound quality
- 👍 Easy to use and intuitive UI
- 💡 Highly configurable and flexible
- 🎛️ Advanced sound shaping possibilities

**What reviewers complain about**

- 🐛 Occasional crashes and instability
- 💻 High CPU usage
- 🐞 Bugs in AUv3 implementation
- 🖼️ UI scaling issues in some DAWs
- 🤔 Presets can be uninspired or limited

**Reported bugs**

- Sound muted in solo mode for some synths
- Synth crashes when loading as AUv3 in Roland Zenbeats
- FX chain not working
- Program change messages not followed as AUv3 in Cubasis internal track
- UI does not scale to full screen in Cubasis 3

**Requested features**

- Add a step sequencer
- Improve preset variety and inspiration
- Fix AUv3 program change issues
- Address UI scaling problems in DAWs
- Implement MIDI out functionality


### 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 KASPAR free?

KASPAR costs $19.99, with no in-app purchases.

### Is Lagrange free?

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

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

Lagrange is rated higher. KASPAR averages 4.6 out of 5 from 94 ratings, while Lagrange averages 4.8 from 57 ratings.

### Do KASPAR or Lagrange have ads?

Neither KASPAR nor Lagrange shows ads.

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

KASPAR ships an update every 16 months, and Lagrange every 2 weeks. Most recently, KASPAR was updated on October 24, 2026 and Lagrange on October 25, 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.*