StringLab vs Blofeld
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- Wavetable synthesis engine
- AUv3 support
- Hardware control
- Compatible with existing soundsets
- Classic Waldorf sound character
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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
Verdict
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
StringLab costs $14.99 and Blofeld $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.
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.
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.
| Parameter | StringLab | Blofeld |
|---|---|---|
| Price | $14.99 — better | $24.99 |
| Rating | 4.3 (14 ratings) | 4.6 (28 ratings) — better |
| Positive reviews | 57.1% of reviews | 62.1% of reviews — better |
| Number of ratings | 14 | 28 — better |
| Update frequency | Every 10 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 45 MB | 117 MB |
| Age rating | 4+ | 4+ |
| Developer | 4Pockets.com | Waldorf Music |
Customer experience
StringLab
Blofeld
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
StringLab
No in-app purchases
Blofeld
No in-app purchases







