Comparison

SpringSound vs Neoharp

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SpringSound

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
Read full description

SpringSound is a physical-modeling audio synthesizer that produces sounds by simulating interactions and vibrations of a set of activators and masses connected to springs. The model offers detailed control of an array of features including: gravity, bouncing, fluid and static friction, mechanical limits, non-linear functions, and more. SpringSound is provided with a very large set of sound presets that you can tweak and save. Small video introductions are available: http://www.youtube.com/watch?v=L1GF7HkSV9c and https://www.youtube.com/watch?v=gdYuZ07nmRo And an audio demo of some presets: https://soundcloud.com/christophe-duquesne/demopresetspringsound It can be used as a sound generator or as an effect using its Audio-In feature, opening a new world of physical modeled effects. It is fully Audiobus® 2 and inter-app audio compatible, and manage state saving. SpringSound can be controlled by a standard MIDI keyboard and directly from the iOS device screen. It is complete with the new MIDI MPE (expressive MIDI) and therefore can be controlled by most expressive controllers like the Haken Continuum, ROLI Seaboard, Linnstrument, Madrona Labs Soundplane, etc. SpringSound app is designed for optimum use with the Haken Continuum (www.hakenaudio.com) and integrate an IOS Continuum Remote (iPad only) allowing a very comprehensive and accurate remote control of the Continuum from your iPad (access to all parameters except programming the Eagan Matrix). SpringSound has be designed to explore sounds domains you won’t be able to access with other synthesis technics. It expands your sonic palette with a new world of physical sounds. It is a rich musical instrument, a sophisticated sound-design tool and an entertaining sonic playground. SpringSound is the big brother of my former Ackorage-Spring app.

About

Neoharp

Features
Read full description

Official app for the Neoharp musical instrument. Fine-tune your sound across all three channels — Chord Buttons, Bass, and Tone Keys — with flexible, per-channel controls. Connect your Neoharp to your iPhone or iPad (via USB-C), open the app, and let your ideas flow. What you can do in the app: - Balance the volume of each channel with the built-in mixer. - Choose Chord Buttons behavior: play the chord tones on press, or switch harmony silently (no chord playback). - Disable/enable the Bass voice. - Set chord voicing and range: define the playable range, toggle inversions on or off, and choose the lowest reference note (note offset). - Toggle sustain on/off; connect an external pedal to control note sustain with your foot. And that’s not all — more features are coming in future updates! Requirements: - A Neoharp instrument is required for full functionality. Questions or feedback: neoharp@neoharp.com

Screenshots

SpringSound1 screens
Neoharp4 screens

Verdict

The call

The clearest difference is price: Neoharp at Free against SpringSound's $2.99. Neoharp also leads on iOS requirement (13.0 vs 15.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Neoharp is free to download; SpringSound costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SpringSound ships an update every 9 months, Neoharp every 6 months. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
SpringSound versus Neoharp: the parameters behind the verdict, then further details
ParameterSpringSoundNeoharp
Price$2.99Free — better
Rating4.2 (19 ratings) — better—
Positive reviews70.0% of reviews—
Number of ratings19 — better—
Update frequencyEvery 9 monthsEvery 6 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size30 MB79 MB
Age rating4+4+
DeveloperChristophe DuquesneNeoharp L.L.C-FZ

In-app purchases

None

SpringSound

No in-app purchases

None

Neoharp

No in-app purchases

Questions

Is SpringSound free?
SpringSound costs $2.99, with no in-app purchases.
Is Neoharp free?
Neoharp is free to download, with no in-app purchases.
Do SpringSound or Neoharp have ads?
Neither SpringSound nor Neoharp shows ads.
Which is updated more often, SpringSound or Neoharp?
SpringSound ships an update every 9 months, and Neoharp every 6 months. Most recently, SpringSound was updated on November 6, 2026 and Neoharp on November 5, 2026.

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