Hilda Synthesizer

Name: Hilda Synthesizer
Rating: 4.9 (57 reviews)
Author: Bram Bos

by Bram Bos

iPhone · iPad

Active Last checked 5 Aug 2026

App Store ↗

Quick verdict

What it is: Store information collected; independent summary not yet available.
At a glance: $12.99

Categories and search queries

Official categories

Music

AppCorpus categories

Music

Key functions

Function	Availability	Access	Scope	Evidence
Family Sharing	Yes	Unknown	App Store	Store published

Screens

App Store

6 store screenshots

Pricing & paywalls

App Store

Price: $12.99

Last verified 5 Aug 2026

Ratings & reviews

App Store

4.9 57 ratings · App Store

5/5Portable O-Coast Type Synth
Very fun synth/effect app that has a feel similar to Make Noise’s O-Coast hardware synth. It has a nice mix of Moog and Buchla character and with the sequencer or drone mode you can easily lose an hour just fiddling. Delay reverb effect is old school and gives the app even more of a hardware feel. It plays nice with other music apps also. Another hit for this consistent developer! Thanks!

Guycoolio · 5 Aug 2026
1/5Unplayable on iPhone 12/Now Presets broke!
Update broke presets. Deleted/reloaded app. No change. Can no longer access presets on my iPhone 12. What lousy test. Really sad. //\\ And that’s the last straw. Universal app my tooshie. I have not bought an Apple app in months because of continued decay of quality and this is the last one. It won’t play in the background using it as a Universal App. Seriously? It won’t save state even upon exit. The developer zoomed in for the iPhone photos, that’s deceptive. The pamphlet is NOT a manual. This is pathetic and it’s taken as good quality. Well for the iPhone 12 it’s a joke and the end of Apple App purchases. It’s just a waste of money. Goodbye. Deleted app. Happy Trails.

Eriptron · 5 Aug 2026
5/5Excellent App
Update: latest firmware addressed the issue below. Upgraded to five stars. Excellent dev and experience. Job well done!! Fantastic app outside of one issue. Every time you load the app, you have to turn down the LPF, otherwise there’s a slight audible noise. No other app to my knowledge does this.

@thekrazywabbit · 5 Aug 2026
5/5Super fun, lots to explore.
5 stars as always, Bram. My one early feedback is that it would be nice to swipe the performance pads to latch them. Which would then allow for more knob twiddling. I also had one instance where I toggled the sequencer off and it wouldn’t stop. Could have been user error.

mikenoface · 5 Aug 2026
5/5Deep and Unique
I held back on getting Hilda because it wasn’t the kind of synth I was used to. Then I bought it, and it was true love, because it wasn’t the kind of synth I was used to, lol. Hilda will reward experimentation with sounds you’re not likely to get anywhere else!

NicknameTaken3759 · 5 Aug 2026

Privacy & accessibility

App Store

Privacy

Data Not Collected Developer declared

Accessibility

No accessibility labels collected yet.

Versions

App Store

1.0
1.0.2
Thanks for the overwhelming positive response! You're the best! Here's what's new and improved in this first quick update: - Fix for startup problems on ancient devices - Tweaked the sequencer GUI to add some visual structure - Optimized modified init patches - All knob sensitivities are now dynamic (relative to the horizontal distance of the finger from the knob) - Sequencer Note/Velocity knobs parameters exposed for external control/automation - Adjusted snap sensitivity of tuning knobs - Fixed a bug which could cause a duplicated instance of the AUv3 to go silent occasionally
1.1
- Completely overhauled preset manager - Create user banks for your presets - Drag and drop presets between banks - Improved handling of imported presets and banks (and zip-files) - Exposed several Sequencer parameters for external control (octave, mutation, etc.) - Dozens of new presets, created by the Audiobus Forum community - Tweaked knob sensitivity behavior
1.1.1
- Improved automation handling in Logic Pro - Updated sequencer behavior for dealing with count-in - Better handling of preset imports - Workaround for occasional issue with sequencer looping in Cubasis 3
1.2
Hilda pays homage to one of the first experimental synthesizers with a 1970s Music Easel-inspired color theme.
1.2.1
By popular demand: rotation (left and right) in the sequencer!
1.2.2
- rotation (left and right) in the sequencer - removed phantom-slide at large pitch jumps when glide is set to 0
1.3
- Presets can now be imported directly in the Preset Window - Improved parameter automation handling
1.3.1 · 5 Mar 2025
Fixed minor problem when initializing the Space effect on preset load

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Availability by market

Data quality & evidence

Page completeness: Live store listing
Last verified: 5 Aug 2026
Sources: App Store

Independent summary has not been published yet.

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GET /api/v3/apps/6447191659

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