# Outer Space vs Kalimba Keys

The clearest difference is price: Kalimba Keys at $4.99 against Outer Space's $19.99. Outer Space's advantage is chart position (#184 vs unranked). On rating, review sentiment, ratings volume and update cadence there is nothing between them.

Outer Space costs $19.99 and Kalimba Keys $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Outer Space against 5.0 for Kalimba Keys. Both are backed by a comparable volume of ratings — 16 and 14 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on October 1, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Outer Space | Kalimba Keys |
| --- | --- | --- |
| Price | $19.99 | **$4.99** |
| Rating | [5.0 (16 ratings)](https://appshunter.io/ios/app/outer-space-tape-echo/id6473747074/reviews) | [5.0 (14 ratings)](https://appshunter.io/ios/app/kalimba-keys/id6474580189/reviews) |
| Number of ratings | **16** | 14 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | Every 6 months |
| Monetization | Paid | Paid |
| Best chart rank | **#184** | — |
| Size | 25 MB | 112 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AudioThing Ltd.](https://appshunter.io/developer/1659941236) | [OSC Audio](https://appshunter.io/developer/1693533681) |

## What reviewers say

### Outer Space

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

**Currently charting:** #184 Top Paid · Music (US App Store)

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


### Kalimba Keys

[App page](https://appshunter.io/ios/app/kalimba-keys/id6474580189)

This app offers a realistic and expressive Kalimba instrument experience with studio-quality sound. It features detailed sampling, a variety of built-in effects, and cross-platform preset management for seamless creativity.

**Highlights:** Individually-sampled Kalimba notes, Multiple Kalimba sound variations, Modulation and Space & Time FX, Adjustable effects order, 35 included presets, Cross-platform preset sharing, Standalone app and AUv3 compatibility

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Outer Space free?

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

### Is Kalimba Keys free?

Kalimba Keys costs $4.99, with no in-app purchases.

### Which has better reviews, Outer Space or Kalimba Keys?

Outer Space and Kalimba Keys are both rated 5.0 out of 5 on the App Store, from 16 and 14 ratings respectively.

### Do Outer Space or Kalimba Keys have ads?

Neither Outer Space nor Kalimba Keys shows ads.

### Which is updated more often, Outer Space or Kalimba Keys?

Outer Space ships an update every 6 months, and Kalimba Keys every 6 months. Most recently, Outer Space was updated on October 1, 2026 and Kalimba Keys on September 23, 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.*