ERS_250 vs WaveFace
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ERS_250
This audio plugin faithfully replicates the EMT 250, the first digital hardware reverb ever made. It offers adjustable decay time, frequency response, predelay, and a dry-wet ratio, with an optional modern schematic.
- Replication of original EMT 250 schematics
- Adjustable reverb decay time (0.4-5s)
- Adjustable low and high frequency response
- Adjustable predelay
- Additional low-pass filter
- Adjustable Dry-Wet ratio
- Optional 'modern' schematics
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The ERS 250 reverb audio plugin was originally designed and sold by Harrie Munnik and his Dutch company EmptyRoomSystems. DDMF, having been a part in the development of the first version some years ago, is proud to carry on the legacy by distributing and further developing the set of ERS plugins. This unit is a faithful replication of the first digital hardware reverb ever made, the EMT 250. Only 250 units of that legendary studio tool have ever been produced… needless to say, the availability as an audio plugin has received an enthusiastic welcome by the audio engineering and production community. Now this plugin is finally available for compatible iOS hosts that support either AUv3 or InterAppAudio. Features: - Careful reproduction of the original schematics - Adjustable reverb decay time (from 0.4 to 5 seconds), low frequency response, high frequency response, and predelay - Additional low-pass filter to create darker sounds - Dry-Wet ratio adjustable - Alternative “modern” schematics available
WaveFace
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WaveFace - Interactive Waveform Synthesizer Transform sound into visual art with WaveFace, an innovative synthesizer that brings waveforms to life through an expressive animated character. Features: • 23 unique waveform types - from classic sine and square waves to advanced SuperSaw, FM, and formant synthesis • Interactive character with frequency-responsive animations - watch the mouth shrink with higher pitches • Dual play modes: Individual waveform exploration and chromatic keyboard mode • Visual waveform feedback with real-time frequency scaling • Sustain functionality with intuitive double-tap controls • Smooth, artifact-free audio engine optimized for iOS • Universal app supporting both iPhone and iPad with optimized layouts • Face color dynamically matches selected waveform in keyboard mode Perfect for: • Electronic musicians exploring synthesis techniques • Sound designers creating unique audio textures • Music educators demonstrating waveform characteristics • Anyone curious about the visual nature of sound • Performers seeking expressive touch-based instruments Experience the marriage of visual art and electronic music. See your sound, hear your touch, and discover synthesis through WaveFace's unique interactive approach. Whether you're crafting cutting leads with SuperSaw, or exploring the harmonic complexity of chord synthesis, WaveFace makes every waveform a visual journey.
Screenshots
Verdict
The clearest difference is price: WaveFace at $4.99 against ERS_250's $13.99. WaveFace also leads on update cadence (daily vs every 8 months). ERS_250's advantage is iOS requirement (9.3 vs 15.0). On 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
ERS_250 costs $13.99 and WaveFace $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ERS_250 ships an update every 8 months, WaveFace daily. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | ERS_250 | WaveFace |
|---|---|---|
| Price | $13.99 | $4.99 — better |
| Rating | 4.3 (6 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 8 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.3 — better | 15.0 |
| Further details — not scored | ||
| Size | 9 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Christian Siedschlag | Johanna Quiceno |
In-app purchases
ERS_250
No in-app purchases
WaveFace
No in-app purchases









