Comparison

ID700 vs Hilda Synthesizer

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

Head to head
About

ID700

This app is a software synthesizer that recreates the voice architecture of the Buchla 700. It offers hybrid FM and waveshaping synthesis with extensive customization options for sound design. It functions as a standalone app or an AUv3 plugin for music production software.

Highlights
  • Hybrid FM and waveshaping synthesis
  • AUv3 and Standalone support
  • Twelve voices with unique algorithms
  • Fourteen complex envelopes per voice
  • Two waveshapers per voice
  • MPE capability
  • Scala scale file support
Features
Read full description

ID700 is a hybrid FM/waveshaping software synthesizer based on the voice architecture of the Buchla 700. ID700 runs in standalone mode and as an AUv3 plugin (Logic Pro, GarageBand, AUM, Cubasis 3). HISTORY In 1987 Don Buchla released the Buchla 700 synthesizer. It was the next logical step from Don's previous digital synths (the Buchla 400, Touché, Buchla 500) but was also influenced by the synth trends of the 1980's, specifically FM synthesis and the all-in-one workstation concept. As usual, Don was ahead of the curve and the 700 never took off. Very few were sold and even fewer functioning units exist today. I always loved the sound of Don's digital oscillators, and combined with the scarcity of the instrument it seemed like a fun project to recreate it in software and reintroduce its concepts to the world. FEATURES * AUv3 and Standalone support on iOS * twelve voices of four operator FM with twelve unique algorithms * fourteen complex envelopes per voice * two hundred professionally designed presets * two waveshapers per voice * preset randomizer * over forty factory wave shapes plus an editor for user created shapes * Scala scale file support with over four thousand included tunings from the Scala scale archive * MPE (MIDI Polyphonic Expression) capability for MPE controllers like the Roli Seabord, Linnstrument, and Sensel Morph * advanced MIDI implementation (including 14-bit CCs and Program Change) * an in-depth manual (60+ pages) is available in the app and from our website * iCloud support for sharing presets, waveshapes, and tunings between devices * up to 16x oversampling

About

Hilda Synthesizer

This app offers a complex oscillator monosynth with a blend of west-coast and east-coast synthesis techniques. It features a wave folder, lowpass gate, 12-mode filter, and VCA circuit, all meticulously circuit-modelled for authentic analog or digital sound. It functions as a playable synth, MIDI sequencer, and audio effect.

Highlights
  • Complex Oscillator Monosynth
  • Wave folder and lowpass gate
  • 12-mode filter
  • Circuit-modelled analog sound
  • Built-in 16-step MIDI Sequencer
  • Audio effect for external audio
  • AUv3 compatibility
Features
Read full description

Hilda is a Complex Oscillator Monosynth, inspired by the most interesting aspects of both west-coast and east-coast synthesis techniques. You'll find a wave folder, lowpass gate, and audio-rate modulations, but also a 12-mode filter and traditional VCA circuit. All parts of the instrument are carefully circuit-modelled to sound as analog (or digital, where applicable) as possible. It's like a best-of-all-worlds semi modular synth, but without the patch cables. The unique mix of different synthesis components adds up to a unique sounding electronic instrument, which can be used as a playable synthesizer, a MIDI sequencer and an audio effect for external audio - or any combination of those three. - Full Audio Unit compatibility (AUv3 instrument, audio effect and MIDI processor modes supported) - Universal design (iPhone and iPad; iPad Air 2 or higher recommended) - Built-in analog style 16 Step MIDI Sequencer with custom scales - 12 mode filter, based on the Oberheim Xpander design - Drone mode lets you [partially] bypass the VCA/LPG and just go with the flow - DIY Lo-Fi digital delay circuit emulation - Live pads with effects that can be triggered via the UI (or via exposed AU Parameters) - All synth settings exposed a AU Parameters (for automation and MIDI learning in your host of choice) - MIDI Processor plugin mode disables synth to save CPU - Carefully handcrafted by yours truly, to capture the essence of my love for tinkering and experimenting with sound :-) Find the user manual on ruismaker.com

Screenshots

Hilda Synthesizer3 screens

Verdict

The call

The clearest difference is update cadence: Hilda Synthesizer at every 9 days against ID700's monthly. Hilda Synthesizer also leads on device support (3 vs 1). On price, rating, review sentiment and ratings volume 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

ID700 costs $12.99 and Hilda Synthesizer $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for ID700 against 4.9 for Hilda Synthesizer. Both are backed by a comparable volume of ratings — 128 and 57 respectively. Written reviews are what separate them: 88% of ID700's written reviews are positive against 90% of Hilda Synthesizer's.

UpkeepUpdate frequency

ID700 ships an update monthly, Hilda Synthesizer every 9 days. The most recent releases landed on August 13, 2026 and September 23, 2026 respectively.

Scorecard2 real differences · 8 level
ID700 versus Hilda Synthesizer: the parameters behind the verdict, then further details
ParameterID700Hilda Synthesizer
Price$12.99$12.99
Rating4.8 (128 ratings)4.9 (57 ratings) — better
Positive reviews87.5% of reviews90.0% of reviews — better
Number of ratings128 — better57
Update frequencyMonthlyEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.012
Further details — not scored
Size51 MB6 MB
Age rating4+4+
DeveloperJonathan SchatzBram Bos

Customer experience

ID700

All ratings128 ratings
Positive93.8%
Neutral3.1%
Negative3.1%
Written reviews40 reviews
Positive87.5%
Neutral5.0%
Negative7.5%

Hilda Synthesizer

All ratings57 ratings
Positive98.2%
Neutral0.0%
Negative1.8%
Written reviews30 reviews
Positive90.0%
Neutral0.0%
Negative10.0%

In-app purchases

None

ID700

No in-app purchases

None

Hilda Synthesizer

No in-app purchases

Questions

Is ID700 free?
ID700 costs $12.99, with no in-app purchases.
Is Hilda Synthesizer free?
Hilda Synthesizer costs $12.99, with no in-app purchases.
Which has better reviews, ID700 or Hilda Synthesizer?
Hilda Synthesizer is rated higher. ID700 averages 4.8 out of 5 from 128 ratings, while Hilda Synthesizer averages 4.9 from 57 ratings.
Do ID700 or Hilda Synthesizer have ads?
Neither ID700 nor Hilda Synthesizer shows ads.
Which is updated more often, ID700 or Hilda Synthesizer?
ID700 ships an update monthly, and Hilda Synthesizer every 9 days. Most recently, ID700 was updated on August 13, 2026 and Hilda Synthesizer on September 23, 2026.

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