Comparison

Envau vs StringLab

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

Head to head
About

Envau

Features
Read full description

Envau turns location and gestures into sound. Place notes, songs, or audio samples anywhere on a map, then activate them by moving through space or swiping across the screen. Create ambient soundscapes that respond to your movement, compose spatial melodies, or use it as a MIDI controller for compatible music apps and hardware. Perfect for musical walking meditations, soundwalks, location-responsive compositions, or recording journeys as finished tracks. Built-In Synthesis & Effects Use the app's internal synthesizers, import or record audio samples, or use both simultaneously. Shape your sound with built-in effects including phaser, chorus, delay, and reverb. Touch Mode Switch to touch mode and play your composition by swiping across the screen. Transform the map into a dynamic instrument where gesture and sound unite. MIDI Controller Connect Envau to external synthesizers, drum machines, and music apps, all while using internal sounds and samples simultaneously. Your spatial compositions become MIDI data, opening up endless creative possibilities with your existing setup. Create & Share Toggle, combine, and share your work in real-time. All active samples and presets are automatically bundled, ensuring your projects load exactly as intended with no broken links or missing assets. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

About

StringLab

This app is a digital synthesizer that uses physical string modeling to recreate the sounds of various instruments, particularly plucked or hammered strings. It allows users to explore acoustic physics and create unique instrument textures through extensive parameter experimentation.

Highlights
  • Karplus-Strong physical modeling
  • Exciter Impact and Noise modes
  • Resonator objects with feedback
  • Frequency Dispersion support
  • External live input
  • Preset randomizer and manager
  • Drag & Drop preset export
Read full description

StringLab is a physical string modeling synthesizer based on Karplus-Strong theory. It is capable of reproducing the sounds of many different types of instruments, but is especially useful in the reproduction of hammered or plucked strings and other types of percussive instruments. It works by passing carefully crafted waveforms and short bursts of white noise through a series of tuned delay lines. The delay lines have an internal feedback loop with a series of filters to mimic the natural decay of harmonics found in a real instrument. StringLab allows you to discover the character of real-world accoustics, exploring the physics of how materials interact. Many new and original textures are born out of experimenting with the settings, so don't be afraid to experiment and create your own unique and dynamic instruments. Features •Karplus Strong based physical modeling. •Exciter Impact with multiple modes. •Exciter Noise with many envelope driven filters. •2 resonator objects with feedback. •8 bands per object with inversion. •4 Coupling modes. •Supports Frequency Dispersion. •Feedback low/high Damping. •Per object Body Filter. •Pitch Deformity. •External live input mode. •Preset randomiser. •Build it Preset Manager & Favourites. •Search Presets. •Drag & Drop preset export of presets. •Supports Color Sets.

Screenshots

Envau4 screens
StringLab4 screens

Verdict

The call

The clearest difference is price: Envau at Free against StringLab's $14.99. StringLab's advantage is in-app purchases (none vs 2) and iOS requirement (13.0 vs 18.7). On update cadence, ads 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

Envau is free to download; StringLab costs $14.99 up front. Envau sells 2 in-app purchases, starting at $3.99 per month. StringLab asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 10 days. The most recent releases landed on September 24, 2026 and October 3, 2026 respectively.

Scorecard3 real differences · 7 level
Envau versus StringLab: the parameters behind the verdict, then further details
ParameterEnvauStringLab
PriceFree — better$14.99
Rating—4.3 (14 ratings) — better
Positive reviews—57.1% of reviews
Number of ratings—14 — better
Update frequencyEvery 10 daysEvery 10 days
AdsNoNo
In-app purchasesYesNo — better
Monetization—Paid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.713.0 — better
Further details — not scored
Size27 MB45 MB
Age rating4+4+
DeveloperTim Sandgren4Pockets.com

In-app purchases

2 purchases

Envau

Subscriptions2
  • All Access$3.991 Month
  • All Access7 Days trial$14.991 Year
None

StringLab

No in-app purchases

Questions

Is Envau free?
Envau is free to download, with in-app purchases available.
Is StringLab free?
StringLab costs $14.99, with no in-app purchases.
Do Envau or StringLab have ads?
Neither Envau nor StringLab shows ads.
Which is updated more often, Envau or StringLab?
Envau ships an update every 10 days, and StringLab every 10 days. Most recently, Envau was updated on September 24, 2026 and StringLab on October 3, 2026.

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