Comparison

Blofeld vs AulDelay

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

Head to head
About

Blofeld

Experience the classic Waldorf synthesizer sound on your iPad with this app. It offers a powerful wavetable engine for rich, expressive tones and can control hardware units. Compatible with existing soundsets and popular hosts, it brings iconic sounds to your mobile music production.

Highlights
  • Wavetable synthesis engine
  • AUv3 support
  • Hardware control
  • Compatible with existing soundsets
  • Classic Waldorf sound character
Read full description

The versatile Waldorf synthesizer classic Blofeld now also available for iPad including auv3 for hosts like Logic, Garageband, Cubasis, AUM and others. With the Blofeld app you can also control your hardware and it is compatible with existing Blofeld soundsets. The sound generation of the Blofeld plugin delivers the typical fat and rich Waldorf sound character that so many Waldorf users worldwide love when they are playing their Blofeld, Q, Q+, Microwave, Microwave II/XT or even the flagship, the Wave. The secret of its sound is a powerful wavetable engine that enables these intense and expressive sounds. This unique synthesis system is based on the revolutionary PPG synthesizers of the early 80s. When you hear the Blofeld for the first time, you’ll immediately remember those edgy, assertive or bell-like timbres that have been an integral part of countless worldwide hits since the PPG era.

About

AulDelay

This audio effect plugin offers a vintage-inspired stereo delay with extensive customization. Achieve classic retro tones through built-in filtering, modulation, and compression, perfect for creative sound design and live looping.

Highlights
  • Vintage-inspired delay effect
  • Stereo delay with L:R ratio control
  • Delay time modulation
  • Internal highpass and lowpass filtering
  • Compression and limiting for retro sound
  • Up to 8 seconds delay time
  • Standalone or AUv3 host compatible
Read full description

AulDelay Vintage Echo Plugin (AUv3) AulDelay is an audio effect plugin that can run standalone, or in any AU compatible host application such as Logic or GarageBand. Overview AulDelay is a vintage-inspired delay effect for those times you don't want a perfectly pristine digital delay sound. A combination of internal highpass and lowpass filtering, delay time modulation, and internal compression / limiting, results in delay tones with a classic retro vibe. However, unlike the vintage units that inspired it, AulDelay is a stereo effect and has a maximum delay time of 8 seconds for old-school live-looping adventures! Parameters Active - Toggles the effect On or Off. Note that when you set the effect to Off, you will still hear the delay repeats, but your input signal is no longer fed into the delay processing. This is a similar idea to the "trails" feature in many delay effects units and pedals. Delay - Sets the delay time between 10ms and 8 seconds. Very short delay times used with modulation and regen can be used to create chorus and flange effects. Longer times can be fun for "Frippertronics" style looping. L : R - Sets the ratio of the left and right delay times. For example, for a delay time of 500ms and a ratio of 1:1, you will hear a delay repeat in both channels every 500ms, just like a standard delay effect. For a ratio of 3:4, the right channel will repeat every 500ms and the left repeats every 375ms, or 333ms for a ratio of 2:3. The ratios 3:4 and 2:3 produce nice rhythmical stereo effects. Mod - Applies Med(ium) or Deep stereo modulation to the delayed sound. Set Mod to Off for no modulation. Regen - Sets the regeneration or feedback of the delay repeats up to 100% "endless" repeats. Note that at high Regen levels, the sound will appear to degrade in quality and become "washed-out" or "murky". This is intentional, and an attempt to capture the sound of analog delays with limited fidelity. Compression and limiting are also applied internally to prevent excessive build-up, which can also result in a "crunchy" sound at extreme settings as the repeats are squashed each time they're layered on top of each other. Again, this tends to be a sonic characteristic of analog and tape-based delays. Tone - Sets the overall tonal colour of the delay repeats from Dark to Bright, or somewhere Warm in-between. An internal LPF is applied "destructively" to the delay repeats, so at the Dark or Warm settings, the repeats will progressively loose higher frequencies. A fixed HPF is also used internally to remove very low frequencies. Both filters, which are applied to the delayed signal only, have been tweaked to emulate the tones associated with vintage analog delays. Mix - Sets the level of the delayed signal. Please note the dry / input signal is always present. If the name sounds familiar, AulDelay is an improved version of the AULDELAY module developed for Voltage Modular by Waverley Instruments. The name is inspired by the Scots world "auld" (as in the song Auld Lang Syne), meaning, old, and of course AU, i.e. Audio Units. For more info and support please visit: www.waverley-instruments.com/robjackson

Screenshots

AulDelay2 screens

Verdict

The call

The clearest difference is price: AulDelay at $1.99 against Blofeld's $24.99. AulDelay also leads on review sentiment (100% vs 62%) and rating (5.0 vs 4.6). Blofeld's advantage is ratings volume (28 vs 5). On ads, in-app purchases and monetization model 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

Blofeld costs $24.99 and AulDelay $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

AulDelay holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Blofeld has 28 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 62% of Blofeld's written reviews are positive against 100% of AulDelay's.

UpkeepUpdate frequency

Blofeld ships an update every 3 weeks, AulDelay every 3 days. The most recent releases landed on October 15, 2026 and October 16, 2026 respectively.

Scorecard7 real differences · 3 level
Blofeld versus AulDelay: the parameters behind the verdict, then further details
ParameterBlofeldAulDelay
Price$24.99$1.99 — better
Rating4.6 (28 ratings)5.0 (5 ratings) — better
Positive reviews62.1% of reviews100.0% of reviews — better
Number of ratings28 — better5
Update frequencyEvery 3 weeksEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad, iPod, Mac — better
Requires iOS16.012.0 — better
Further details — not scored
Size117 MB12 MB
Age rating4+4+
DeveloperWaldorf MusicRob Jackson

Customer experience

Blofeld

All ratings28 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews29 reviews
Positive62.1%
Neutral17.2%
Negative20.7%

AulDelay

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Blofeld

Reported bugs

2 issues
  • No presets at first, had to delete and re-download the app
  • Some old sysex files don't import properly

Requested features

2 requests
  • Physical emulation mode based on the desktop hardware device
  • Ability to favorite presets

AulDelay

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Blofeld

No in-app purchases

None

AulDelay

No in-app purchases

Questions

Is Blofeld free?
Blofeld costs $24.99, with no in-app purchases.
Is AulDelay free?
AulDelay costs $1.99, with no in-app purchases.
Which has better reviews, Blofeld or AulDelay?
AulDelay is rated higher. Blofeld averages 4.6 out of 5 from 28 ratings, while AulDelay averages 5.0 from 5 ratings.
Do Blofeld or AulDelay have ads?
Neither Blofeld nor AulDelay shows ads.
Which is updated more often, Blofeld or AulDelay?
Blofeld ships an update every 3 weeks, and AulDelay every 3 days. Most recently, Blofeld was updated on October 15, 2026 and AulDelay on October 16, 2026.

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