Comparison

Space UI vs CoHost RLSFX

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

Head to head
About

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.

Highlights
  • Procedural UI generation
  • Interactive interfaces
  • Multiple alien languages
  • Sound effects
  • Save interface seeds
  • Cross-device syncing
  • HomeKit light sync
Read full description

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.

About

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.

Highlights
  • Real-time soundboard
  • Curated royalty-free sound effects
  • Pro-grade audio frameworks
  • Ultra-responsive playback
  • High-performance design
  • 71 copyright-free samples
Features
Read full description

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

Space UI4 screens
CoHost RLSFX4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Space UI ships an update every 2 months, CoHost RLSFX every 17 months. Both last shipped on October 21, 2026.

Scorecard4 real differences · 6 level
Space UI versus CoHost RLSFX: the parameters behind the verdict, then further details
ParameterSpace UICoHost RLSFX
PriceFreeFree
Rating3.0 (2 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews66.7% of reviews — better
Number of ratings2 — better1
Update frequencyEvery 2 months — betterEvery 17 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, Mac, Apple TV — betteriPhone, iPad, iPod
Requires iOS26.013.0 — better
Further details — not scored
Size190 MB33 MB
Age rating4+17+
Developer256 ArtsAbu Studio Inc

Customer experience

Space UI

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

CoHost RLSFX

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

None

Space UI

No in-app purchases

None

CoHost RLSFX

No in-app purchases

Questions

Is Space UI free?
Space UI is free to download, with no in-app purchases.
Is CoHost RLSFX free?
CoHost RLSFX is free to download, with no in-app purchases.
Which has better reviews, Space UI or CoHost RLSFX?
CoHost RLSFX is rated higher. Space UI averages 3.0 out of 5 from 2 ratings, while CoHost RLSFX averages 5.0 from 1 ratings.
Do Space UI or CoHost RLSFX have ads?
Neither Space UI nor CoHost RLSFX shows ads.
Which is updated more often, Space UI or CoHost RLSFX?
Space UI ships an update every 2 months, and CoHost RLSFX every 17 months. Most recently, Space UI was updated on October 21, 2026 and CoHost RLSFX on October 21, 2026.

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