Space UI vs CoHost RLSFX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Space UI
Create realistic sci-fi user interfaces procedurally for video productions or personal projects. Features include interactive displays, alien languages, sound effects, and cross-device syncing. Users can also sync colors with smart home lights.
- Procedural UI generation
- Interactive interfaces
- Multiple alien languages
- Sound effects
- Save interface seeds
- Cross-device syncing
- HomeKit light sync
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Generate and access great, realistic looking sci-fi user interfaces for use in video productions or hobby projects. FEATURES: • User interfaces are generated procedurally. • Interfaces are interactive. • Multiple imaginary alien languages. • Sound Effects • Save the seeds for interfaces you like. • Sync interface designs with multiple devices to create a seamless design that extends across multiple displays. • Sync interface colors with HomeKit lights. I encourage customers to contact me with additional UI element ideas that they want added to the app.
CoHost RLSFX
This app provides a real-time soundboard for comedians and content creators, featuring a curated collection of royalty-free sound effects designed for humor and impact. Built with professional audio frameworks for responsive playback and studio-quality sound, it's optimized for speed and performance.
- Real-time soundboard
- Curated royalty-free sound effects
- Pro-grade audio frameworks
- Ultra-responsive playback
- High-performance design
- 71 copyright-free samples
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Whether you’re a comedian, content creator, class clown, or need the perfect punchline sound in real time, CoHost RLSFX is the fastest, funniest soundboard app you’ll ever need. Designed to elevate your comedy, and everyday interactions, it’s built with pro-grade audio frameworks like AudioKit and Audiobus, ensuring ultra-responsive playback and studio-quality sound. Behind the scenes is a minimal, high-performance design—optimized for speed, not distractions. You won’t find fluff here. Just carefully curated, top-ranked, royalty-free sound effects chosen from the top SFX and years of testing what actually makes people laugh. Features include: 71 Copywrite free Samples Pet Sounds & Beats Vaudeville & Classic TV stingers Springer-style buzzer chaos Cowbell beats (because you still need more) Originally launched in 2011 with the tagline: “Need more cowbell? There’s an app for that.” Today, after a full-scale rebuild, comprehensive updates, and a dash of timeless humor, Cohost is RLSFX is better than ever—and it’s funnier, faster, and more powerful than ever. Expect to surprise friends, coworkers, and even unsuspecting strangers.
Screenshots
Verdict
The clearest difference is review sentiment: CoHost RLSFX at 67% against Space UI's 0%. CoHost RLSFX also leads on rating (5.0 vs 3.0) and iOS requirement (13.0 vs 26.0). Space UI's advantage is update cadence (every 2 months vs every 17 months). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CoHost RLSFX holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 0% of Space UI's written reviews are positive against 67% of CoHost RLSFX's.
Space UI ships an update every 2 months, CoHost RLSFX every 17 months. Both last shipped on October 21, 2026.
| Parameter | Space UI | CoHost RLSFX |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | 66.7% of reviews — better |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 2 months — better | Every 17 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Mac, Apple TV — better | iPhone, iPad, iPod |
| Requires iOS | 26.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 190 MB | 33 MB |
| Age rating | 4+ | 17+ |
| Developer | 256 Arts | Abu Studio Inc |
Customer experience
Space UI
CoHost RLSFX
In-app purchases
Space UI
No in-app purchases
CoHost RLSFX
No in-app purchases
Questions
Is Space UI free?
Is CoHost RLSFX free?
Which has better reviews, Space UI or CoHost RLSFX?
Do Space UI or CoHost RLSFX have ads?
Which is updated more often, Space UI or CoHost RLSFX?
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