BST100 V2 Super Overdrive vs Crystals Harmonizer®
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BST100 V2 Super Overdrive
This app emulates a legendary high-gain guitar amplifier, offering versatile tone shaping for various music genres. It features two channels with virtual tubes for crystal clear, crunchy, or USA hi-gain sounds, and can be used as a standalone app or with other audio applications.
- High-gain guitar amplifier emulation
- Two channels: Normal and Boost
- Virtual 12AX7 tubes
- Clean, Crunch, and USA Hi-Gain tones
- Standalone app, AudioUnit v3, Inter-App Audio support
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"Capture legendary high-gain clarity and modern versatility in one iconic amplifier" Nembrini Audio BST100 V2 Super Overdrive Guitar Amplifier is modelled on Soldano SLO100*. Introduced in 1987, this iconic amp has found its place in the rigs of any genre, from screaming metal to pop music. Simple to use, versatility and great tone are the keys to the success of this beautiful all-valve guitar head. BST100 V2 is a masterpiece of high-gain amplification, offering unparalleled clarity, rich harmonics, and versatile tone shaping with modern enhancements for the ultimate guitar sound Two channels driven by four 12AX7 Virtual Tubes, carefully modelled and fine-tuned for the cutting edge 90s guitar amplifier hi-gain sound: - Normal Channel with Bright and Clean/Crunch switches from crystal clear to a creamy crunch tone - Boost channel for the famous USA Hi-Gain guitar tone! Works as a standalone app, AudioUnit v3 effect, or Inter-App Audio effect Legal Disclaimer: Soldano SLO100 is a registered trademark of Soldano Custom Amplification. BST100 V2 was developed by Nembrini Audio SRL based on its own modelling techniques. Soldano Custom Amplification has not endorsed nor sponsored the BST100 V2 in any manner, nor licensed any intellectual property for use in this product.
Crystals Harmonizer®
This app offers advanced pitch shifting, delay, and reverb effects inspired by a classic hardware unit. Create expansive, modulated soundscapes for instruments and vocals, with real-time control over parameters.
- Twin reverse pitch shifters
- Reverse granular delays
- Real-time RIBBON control
- Octave up FLEX button
- Long decay reverb
- Musical micro-pitching
- Standalone and AUv3 plugin
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Eventide Crystals Harmonizer® combines twin reverse pitch shifters with reverse delays and reverb. This iconic H3000 effect can be used to create out-of-this-world climbing and cascading pitched delays or to create unique sounding reverbs. It features two reverse granular delays that can be manipulated by length and pitch. Crystals excels at adding life to boring synths, guitar, and vocals making them sound huge and majestic. From sound design to other-worldly solos, Crystals will spark inspiration. The innovative RIBBON control allows you to modulate many parameters at once. Manipulate the pitches to play it like an instrument or slowly increase feedback to make your signal explode into infinity. Need some extra gusto? Hold down the FLEX button to shift one octave up from the current pitch. Features: - Two pitch-shifters, each with a four-octave range from two octaves down to two octaves up. - Two independently adjustable delays, up to 4 seconds each, with their own individual feedback. - Reverb with 100 seconds of decay. - Make it musical by micro-pitching each voice around the 4th (500 cents), 5th (700 cents), or octave (1200 cents). - Smooth out delay grains by applying up to 4 seconds of delay for each voice. - RIBBON lets you ‘play’ the effect in real-time and provides dynamic and fluid control to morph back and forth between the settings of your choice. - FLEX shifts both voices up one octave at the push of a button. - MIXLOCK keeps MIX control constant as you audition presets. - Available as an Audio Units AUv3 plug-in and Standalone App.
Screenshots
Verdict
The clearest difference is rating: BST100 V2 Super Overdrive at 5.0 against Crystals Harmonizer®'s 4.6. Crystals Harmonizer®'s advantage is price ($14.99 vs $19.99) and update cadence (every 3 months vs every 7 months). On review sentiment, ratings volume, ads and in-app purchases 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
BST100 V2 Super Overdrive costs $19.99 and Crystals Harmonizer® $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
BST100 V2 Super Overdrive holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 17 and 20 respectively. Written reviews point the same way: 100% of BST100 V2 Super Overdrive's written reviews are positive against 92% of Crystals Harmonizer®'s.
BST100 V2 Super Overdrive ships an update every 7 months, Crystals Harmonizer® every 3 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.
| Parameter | BST100 V2 Super Overdrive | Crystals Harmonizer® |
|---|---|---|
| Price | $19.99 | $14.99 — better |
| Rating | 5.0 (17 ratings) — better | 4.6 (20 ratings) |
| Positive reviews | 100.0% of reviews — better | 92.3% of reviews |
| Number of ratings | 17 | 20 — better |
| Update frequency | Every 7 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15 | 11.0 — better |
| Further details — not scored | ||
| Size | 41 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Nembrini Audio | Eventide |
Customer experience
BST100 V2 Super Overdrive
Crystals Harmonizer®
In-app purchases
BST100 V2 Super Overdrive
No in-app purchases
Crystals Harmonizer®
No in-app purchases
Questions
Is BST100 V2 Super Overdrive free?
Is Crystals Harmonizer® free?
Which has better reviews, BST100 V2 Super Overdrive or Crystals Harmonizer®?
Do BST100 V2 Super Overdrive or Crystals Harmonizer® have ads?
Which is updated more often, BST100 V2 Super Overdrive or Crystals Harmonizer®?
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