StringLab vs Riffler Flow
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.
Riffler Flow
Instantly generate clean, arpeggio-based guitar riffs for various music genres. Explore preset styles or customize your own unique sounds with realistic tones and extensive chord options. Ideal for producers, songwriters, and musicians seeking creative inspiration.
- Instant arpeggio-based riff generation
- Preset styles for Hip-Hop, Pop, EDM, Rock
- Customizable settings for personalization
- AUv3 plugin integration
- Realistic guitar and synth tones
- Chord and progression generator
- Tablature output
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Introducing Riffler Flow – Create instant clean guitar riffs. The original Riffler was perfect for instantly making heavy, distorted, scale based riffs. Riffler Flow is a brand new app that instantly generates softer, clean, arpeggio based riffs at the press of a button. Unleash a torrent of clean guitar arpeggios with Riffler Flow, the go-to app for crafting catchy and copyright-free riffs tailored for modern genres. Simply tap "Create" and let the magic of arpeggios elevate your music production to new heights. PRESETS Dive into the world of Riffler Flow by selecting from a diverse range of preset styles specifically curated for Hip-Hop, Pop, EDM and Rock. Tap "Create" and watch as unique arpeggio-driven riffs come to life. Each riff is presented in intuitive tablature format, allowing you to both listen and save your musical creations. CUSTOMIZATION For those seeking a deeper level of control, Riffler Flow offers an extensive array of customizable settings. Fine-tune and personalize your riffs to you to create your signature sound. WHO WOULD USE RIFFLER FLOW? • Music producers and beatmakers exploring fresh, clean guitar elements for their tracks. • Songwriters looking for a burst of inspiration to infuse their compositions with captivating arpeggios. • Artists and musicians in search of a virtual guitarist to elevate their sound in limitless jam sessions. • Producers aiming to distinguish themselves by building a library of distinctive arpeggio riffs, setting their work apart from the crowd. • Ultimately, Riffler Flow is great fun – ideal for anyone eager to experiment and craft their own musical masterpieces! AUv3 PLUGIN Riffler Flow stands as both a standalone app and an AUv3 plugin, seamlessly integrating into host music applications. Sync it within your preferred host app, sending audio and MIDI to other effects, synths, samplers, and virtual instruments. REALISTIC TONES Riffler Flow's cutting-edge audio engine ensures breathtakingly realistic guitar tones, delivering a clean and vibrant sonic palette for your arpeggio explorations. There are various guitar tones featuring different effects along with an atmospheric reversed guitar sound and various different synth tones. There are additional delay and reverb controls for each sound. CHORDS AND PROGRESSION GENERATOR Riffler Flow features 28 different chord types ranging from basic major and minor chords to advanced jazz voicings. Chords can be entered manually or entire progression can be generated automatically by Riffler Flow. The generated progressions can be fined tuned using the "Character", "Complexity" and "Changes" controls.
Screenshots
Verdict
The clearest difference is monetization model: Riffler Flow at free against StringLab's paid. Riffler Flow also leads on chart position (#185 vs unranked) and iOS requirement (11.0 vs 13.0). StringLab's advantage is rating (4.3 vs 4.1). On price, review sentiment, ratings volume and update cadence 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 Riffler Flow $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
StringLab holds the better App Store score, 4.3 against 4.1. Both are backed by a comparable volume of ratings — 14 and 25 respectively. Written reviews point the same way: 57% of StringLab's written reviews are positive against 50% of Riffler Flow's.
StringLab ships an update every 10 days, Riffler Flow weekly. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.
| Parameter | StringLab | Riffler Flow |
|---|---|---|
| Price | $14.99 | $14.99 |
| Rating | 4.3 (14 ratings) — better | 4.1 (25 ratings) |
| Positive reviews | 57.1% of reviews — better | 50.0% of reviews |
| Number of ratings | 14 | 25 — better |
| Update frequency | Every 10 days | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | — | #185 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 45 MB | 780 MB |
| Age rating | 4+ | 4+ |
| Developer | 4Pockets.com | Jonathan Bell |
Customer experience
StringLab
Riffler Flow
In-app purchases
StringLab
No in-app purchases
Riffler Flow
No in-app purchases









