Comparison

StringLab vs Blofeld

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

Head to head
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.

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.

Screenshots

StringLab4 screens

Verdict

The call

The clearest difference is price: StringLab at $14.99 against Blofeld's $24.99. StringLab also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). Blofeld's advantage is rating (4.6 vs 4.3). On review sentiment, ratings volume, update cadence and ads 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

StringLab costs $14.99 and Blofeld $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Blofeld holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 14 and 28 respectively. Written reviews point the same way: 57% of StringLab's written reviews are positive against 62% of Blofeld's.

UpkeepUpdate frequency

StringLab ships an update every 10 days, Blofeld every 3 weeks. The most recent releases landed on September 21, 2026 and September 18, 2026 respectively.

Scorecard4 real differences · 6 level
StringLab versus Blofeld: the parameters behind the verdict, then further details
ParameterStringLabBlofeld
Price$14.99 — better$24.99
Rating4.3 (14 ratings)4.6 (28 ratings) — better
Positive reviews57.1% of reviews62.1% of reviews — better
Number of ratings1428 — better
Update frequencyEvery 10 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS13.0 — better16.0
Further details — not scored
Size45 MB117 MB
Age rating4+4+
Developer4Pockets.comWaldorf Music

Customer experience

StringLab

All ratings14 ratings
Positive78.6%
Neutral7.1%
Negative14.3%
Written reviews7 reviews
Positive57.1%
Neutral14.3%
Negative28.6%

Blofeld

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

Bugs and requests

StringLab

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

StringLab

No in-app purchases

None

Blofeld

No in-app purchases

Questions

Is StringLab free?
StringLab costs $14.99, with no in-app purchases.
Is Blofeld free?
Blofeld costs $24.99, with no in-app purchases.
Which has better reviews, StringLab or Blofeld?
Blofeld is rated higher. StringLab averages 4.3 out of 5 from 14 ratings, while Blofeld averages 4.6 from 28 ratings.
Do StringLab or Blofeld have ads?
Neither StringLab nor Blofeld shows ads.
Which is updated more often, StringLab or Blofeld?
StringLab ships an update every 10 days, and Blofeld every 3 weeks. Most recently, StringLab was updated on September 21, 2026 and Blofeld on September 18, 2026.

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