Comparison

Alina String Ensemble vs OB

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Alina String Ensemble

This app is a musical keyboard simulator that recreates the authentic sounds of the Solina String Ensemble from the 1970s. It features a 49-key, 4-octave keyboard with multiple instrument sounds and built-in effects like reverb and modulation.

Highlights
  • Solina String Ensemble sound simulation
  • 6 pre-loaded instruments
  • 49-key, 4-octave keyboard
  • Core MIDI and MIDI compatible
  • Built-in spring reverb effect
  • Adjustable modulation
Features
Read full description

Alina String Ensemble is a musical keyboard application for iPhone/iPad/iPod touch that simulates the Solina String Ensemble. The sound is in reference to Solina String Ensemble (Serial number "SERIES 22, No.0093158”) manufactured by N.V. EMINENT BODEGRAVEN HOLLAND in the 70’s. You are sure to be surprised at the real sound generated from this App. Features: - Pre-loaded with 6 instruments including Viola, Violin, Brass, Horn, Cello, Contra Bass - 49key, 4-octave Keyboards with scrollable - Core MIDI and MIDI compatible - Scrollable Keyboard & dual Keyboards(Only iPad) - BASS tone(Cello, Contra Bass) is assigned on lowest 20 keys - Built-in Reverb that simulates a spring reverb - Modulation that can adjust the rate and depth Special thanks: Jun Kawabata courtesy of AIRPLANE LABEL & Studio Peach Blue Peach

About

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.

Highlights
  • Oberheim OB-X emulation
  • MPE support
  • On-screen MIDI keyboard
  • High-quality retina rendering
  • AUv3 improvements
  • Preset search with categories
Features
Read full description

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.

Screenshots

Alina String Ensemble4 screens
OB2 screens

Verdict

The call

The clearest difference is price: Alina String Ensemble at $3.99 against OB's $19.99. OB's advantage is update cadence (every 10 days vs every 4 months) and review sentiment (75% vs 52%). On rating, 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

CostPrice · In-app purchases · Ads · Monetization

Alina String Ensemble costs $3.99 and OB $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.1 for Alina String Ensemble against 4.1 for OB. Both are backed by a comparable volume of ratings — 19 and 15 respectively. Written reviews are what separate them: 52% of Alina String Ensemble's written reviews are positive against 75% of OB's.

UpkeepUpdate frequency

Alina String Ensemble ships an update every 4 months, OB every 10 days. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
Alina String Ensemble versus OB: the parameters behind the verdict, then further details
ParameterAlina String EnsembleOB
Price$3.99 — better$19.99
Rating4.1 (19 ratings)4.1 (15 ratings) — better
Positive reviews52.4% of reviews75.0% of reviews — better
Number of ratings19 — better15
Update frequencyEvery 4 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size131 MB210 MB
Age rating4+4+
Developerinsideout ltd.DiscoDSP LLC

Customer experience

Alina String Ensemble

All ratings20 ratings
Positive75.0%
Neutral5.0%
Negative20.0%
Written reviews21 reviews
Positive52.4%
Neutral0.0%
Negative47.6%

OB

All ratings16 ratings
Positive81.3%
Neutral0.0%
Negative18.8%
Written reviews12 reviews
Positive75.0%
Neutral8.3%
Negative16.7%

In-app purchases

None

Alina String Ensemble

No in-app purchases

None

OB

No in-app purchases

Questions

Is Alina String Ensemble free?
Alina String Ensemble costs $3.99, with no in-app purchases.
Is OB free?
OB costs $19.99, with no in-app purchases.
Which has better reviews, Alina String Ensemble or OB?
OB is rated higher. Alina String Ensemble averages 4.1 out of 5 from 19 ratings, while OB averages 4.1 from 15 ratings.
Do Alina String Ensemble or OB have ads?
Neither Alina String Ensemble nor OB shows ads.
Which is updated more often, Alina String Ensemble or OB?
Alina String Ensemble ships an update every 4 months, and OB every 10 days. Most recently, Alina String Ensemble was updated on October 24, 2026 and OB on October 24, 2026.

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