OB vs Thereminator 2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OB
This app recreates a classic vintage synthesizer, offering rich, full-bodied tones for electronic music, recordings, and film scores. It features MPE support, an on-screen MIDI keyboard, and high-quality rendering for enhanced music production.
- Oberheim OB-X emulation
- MPE support
- On-screen MIDI keyboard
- High-quality retina rendering
- AUv3 improvements
- Preset search with categories
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OB-Xd is a classic synthesizer that captivates musicians with its rich, full-bodied tones and expansive sound design. Perfect for adding a vintage touch to electronic tracks, live recordings, or film scores, OB-Xd brings unique and expressive qualities to your music. Designed to recreate the Oberheim OB-X, it features enhancements like micro random detuning and unison for a fuller sound. Elevate your studio setup and music production with OB-Xd today. • Full MPE support with configurable pitch bend, aftertouch, timbre, and pressure depth. • On-screen MIDI keyboard with pitch bend and mod wheels (iPad only). • Native iOS popups, dialogs, and text input throughout the interface. • Search Presets with category subfolders and native no-results dialog. • High-quality retina rendering. • AUv3 improvements: async file choosers, host viewport resize, and Bluetooth MIDI access.
Thereminator 2
This app brings the iconic theremin sound to your mobile device and computer. It offers touch-controlled virtual instrument capabilities with extensive sound shaping options and MPE support for DAWs.
- Touch-controlled virtual theremin
- AUv3 instrument plugin
- MPE protocol support
- Over 50 factory presets
- Virtual-Analog resonant filter
- Modeled tape delay
- 51 musical scales
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“I’ll be Bach.” Stop the presses! Load up the inkwells! For it's the return of one of the first — if not the first — instruments made for iOS: the infamous “pocket theremin” is back. A lot has changed since those heady days of 2008, and so has Thereminator. Although it is not made of T-1000 grade liquid metal (well...not yet), the all-new Thereminator 2 has evolved into a bona fide touch controlled virtual theremin with ample helpings of tone, expression, versatility, and technology. And it’s now an AUv3 plugin, too! Using a special adaptation of the MPE protocol, Thereminator 2 can inject its eerie sounds directly into your DAW, whether on your iPhone, iPad or Apple Silicon powered computer. Whether you have your plan 9 ready, or just lurking in dark shadows, it is a thrill to bring back the app that started it all for us. Thank Y’all for the support, for it’s been an amazing journey! :: Specifications :: • Touch-controlled Virtual Theremin • AUv3 instrument plugin included • Compatible with DAWs that are MPE friendly, including GarageBand, Logic, and Cubasis • Compatible with iPhone, iPad, and Apple Silicon powered computers • Over 50 factory presets Sound engine includes, • 8 waveforms, including the original, unique Thereminator waveform • 8 octave frequency range • Special drive stage for fattening up the sound • Virtual-Analog resonant filter • Dedicated vibrato and tremolo operators with adjustable rate & amount • Portamento • Custom chorus / expander effect for big stereophonic sounds • Modeled tape delay capable of self-oscillation — plenty of vintage mojo • Vertical touch control for volume, filter, vibrato and tremolo Built-in touch controller includes, • Horizontal pitch and vertical expression control • 51 musical scales • Selectable musical key • Note Snap feature that can dial in any amount of glide between adjacent notes • Lock feature to preserve above setting during preset changes • Scrollable control surface with adjustable key size MIDI / MPE and other features include, • MIDI Learn • MPE • Can be used with regular MIDI keyboards on MIDI channel 1 (channels 2-16 are optimized for MPE) • Save & share unlimited banks and presets • Standalone app includes virtual “Tapedeck” for recording & sharing your creations
Screenshots
Verdict
The clearest difference is price: Thereminator 2 at $7.99 against OB's $19.99. Thereminator 2 also leads on rating (4.7 vs 4.1) and review sentiment (88% vs 75%). On ratings volume, ads, in-app purchases and monetization model 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
OB costs $19.99 and Thereminator 2 $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Thereminator 2 holds the better App Store score, 4.7 against 4.1. Both are backed by a comparable volume of ratings — 15 and 14 respectively. Written reviews point the same way: 75% of OB's written reviews are positive against 88% of Thereminator 2's.
| Parameter | OB | Thereminator 2 |
|---|---|---|
| Price | $19.99 | $7.99 — better |
| Rating | 4.1 (15 ratings) | 4.7 (14 ratings) — better |
| Positive reviews | 75.0% of reviews | 87.5% of reviews — better |
| Number of ratings | 15 — better | 14 |
| Update frequency | Every 10 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 210 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | DiscoDSP LLC | Yonac Inc. |
Customer experience
OB
Thereminator 2
In-app purchases
OB
No in-app purchases
Thereminator 2
No in-app purchases








