# Outer Space vs OB

The clearest difference is rating: Outer Space at 5.0 against OB's 4.1. Outer Space also leads on review sentiment (100% vs 75%) and iOS requirement (12.0 vs 15.0). OB's advantage is update cadence (every 10 days vs every 6 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Outer Space costs $19.99 and OB $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Outer Space holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 16 and 15 respectively. Written reviews point the same way: 100% of Outer Space's written reviews are positive against 75% of OB's.

Outer Space ships an update every 6 months, OB every 10 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Outer Space | OB |
| --- | --- | --- |
| Price | $19.99 | $19.99 |
| Rating | **[5.0 (16 ratings)](https://appshunter.io/ios/app/outer-space-tape-echo/id6473747074/reviews)** | [4.1 (15 ratings)](https://appshunter.io/ios/app/ob-xd-3-auv3-synth/id6654915211/reviews) |
| Number of ratings | **16** | 15 |
| Positive reviews | **100.0% of reviews** | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 10 days** |
| Monetization | Paid | Paid |
| Size | 25 MB | 210 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AudioThing Ltd.](https://appshunter.io/developer/1659941236) | [DiscoDSP LLC](https://appshunter.io/developer/1465262828) |

## What reviewers say

### Outer Space

[App page](https://appshunter.io/ios/app/outer-space-tape-echo/id6473747074)

This app emulates a vintage tape echo unit from the seventies, featuring three playback heads and two spring reverb tanks. It models various tape responses and analog imperfections for authentic sound.

**Highlights:** Tape echo emulation, Three playback heads, Two spring reverb tanks, Multiple tape responses, Analog imperfection modeling, AUv3 and Standalone support

**Features:** Vision Pro support

**In-app purchases:** none


### OB

[App page](https://appshunter.io/ios/app/ob-xd-3-auv3-synth/id6654915211)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Outer Space free?

Outer Space costs $19.99, with no in-app purchases.

### Is OB free?

OB costs $19.99, with no in-app purchases.

### Which has better reviews, Outer Space or OB?

Outer Space is rated higher. Outer Space averages 5.0 out of 5 from 16 ratings, while OB averages 4.1 from 15 ratings.

### Do Outer Space or OB have ads?

Neither Outer Space nor OB shows ads.

### Which is updated more often, Outer Space or OB?

Outer Space ships an update every 6 months, and OB every 10 days. Most recently, Outer Space was updated on October 24, 2026 and OB on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*