Ka vs Sci
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ka
This novelty app provides four distinct "Ka-Ching!" sound effects for entertainment. Users can swipe the screen and tap a button to play sounds, with an added gravity feature that makes the button move with the phone. It's designed for fun and pranks, requiring no internet connection.
- Multiple "Ka-Ching!" sound effects
- Interactive screen swipe and button tap
- Gravity-enabled button movement
- Offline functionality
- Novelty and prank use
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- Are you "In The Money!" ? - Are you "Makin' It Rain" 24/7? Then let everyone know how you roll with the Ka-Ching button! Four Awesome Ka-Ching sounds! Swipe the screen then click a button for hours of entertainment sure to perturb everyone around you!! Get it now! And click "BrennanMoyMedia" above or to the lower left to see some of our other fun and sometimes annoying apps! - Self contained app, no internet connection is required to annoy people! Now with Gravity! The button moves with the phone! Download it! Also please click "BrennanMoyMedia" above to see some of our other great apps! Self contained app, no internet connection is required to annoy people! DISCLAIMER: This app is a novelty app, like for fun, to mess with your friends and family. Please do not use it to harass and terrorize people! Also it is advised that you do not connect it to an external speaker device (or if you do keep it low). If you blast some of these noises really loudly, as with any sound, you could really damage your hearing! Use the app responsibly at a reasonable volume, and be careful not to hurt yourself or others. BrennanMoyMedia assumes no responsibility to damage you cause yourself, others, or to property! Thanks and have fun with it!
Sci
Explore a universe of over 50 unique science fiction sound effects. This app offers a diverse collection of interstellar noises, from alien calls and laser blasts to spaceship engines and robotic chatter.
- Over 50 sci-fi sound effects
- Alien sounds
- Laser sounds
- Spaceship sounds
- Robot sounds
- Weapon sounds
- Mood music
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Travel through space and time with more than 50 fun sci-fi sound effects! Out of this world sounds include: martian death ray, lasers, UFOs, aliens, weapons, robots, spaceships, background mood music and more fun sound effects! Get the best sci-fi soundboard app now! Sci-fi sound effects and soundboards include: Alien sounds - brain scanner - creature - roar - scanner - slime - spawn Invasion - Mars attacks - spaceship door - spaceship hatch - intruder alert - red alert - death ray Laser sounds - burst - cannon - machine gun - ray gun - retro - shot Mood sound effects - eerie - freaky drone - horror - menace - shivers - suspense Random sounds - comet - energy whip - sonar ping - sonic boom - time bomb - time travel Robot sounds - babble - chatter - communications - computing - movement - dying Spaceship sounds - take off - fly by - fly bys - UFO - thrusters - power down Synth sound effects - action - bounce - chase - intro - storm - transition Weapon sounds - grenade - machine gun - M16 - P90 - shotgun - uzi Download the best sci-fi sounds app and blast those alien vermin!
Screenshots
Verdict
Ka and Sci both sit at 4.0 stars, but that hides the real split: 56% of Sci's written reviews are positive against 25% of Ka's. Ka's advantage is monetization model (ad-supported vs free with in-app purchases) and iOS requirement (9.3 vs 18). On price, rating, ratings volume and update cadence 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.
On the App Store both sit at effectively the same score — 4.0 for Ka against 4.0 for Sci. Both are backed by a comparable volume of ratings — 6 and 13 respectively. Written reviews are what separate them: 25% of Ka's written reviews are positive against 56% of Sci's.
Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on September 9, 2026 and September 18, 2026 respectively.
| Parameter | Ka | Sci |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (6 ratings) | 4.0 (13 ratings) |
| Positive reviews | 25.0% of reviews | 56.0% of reviews — better |
| Number of ratings | 6 | 13 — better |
| Update frequency | Every 4 months | Every 4 months |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.3 — better | 18 |
| Further details — not scored | ||
| Size | 17 MB | 15 MB |
| Age rating | 4+ | 9+ |
| Developer | The Ritz Acme Ltd Liability Company | iGreenEarth |
Customer experience
Ka
Sci
In-app purchases
Ka
No in-app purchases
Sci
No in-app purchases
