StringLab vs Xho Tuner
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.
Xho Tuner
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The easiest tuning app, no ads or distractions: chromatic, standard and alternative tunings, real-time pitch detection and note display. Easy-to-use interface with clear visual feedback. Supports light mode and dark mode. No ads, no personal data collected. TAP the circle in the center for settings!
Screenshots
Verdict
The clearest difference is price: Xho Tuner at Free against StringLab's $14.99. StringLab's advantage is iOS requirement (13.0 vs 16.6). On update cadence, 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
Xho Tuner is free to download; StringLab costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
StringLab ships an update every 10 days, Xho Tuner fortnightly. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.
| Parameter | StringLab | Xho Tuner |
|---|---|---|
| Price | $14.99 | Free — better |
| Rating | 4.3 (14 ratings) — better | — |
| Positive reviews | 57.1% of reviews | — |
| Number of ratings | 14 — better | — |
| Update frequency | Every 10 days — better | Fortnightly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 45 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | 4Pockets.com | Atlas srl (Rome) |
In-app purchases
StringLab
No in-app purchases
Xho Tuner
No in-app purchases









