Sci vs BTTF Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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!
BTTF Clock
Experience the magic of time travel with a digital recreation of the iconic DeLorean dashboard. This app features customizable date panels, real-time clock updates, and authentic sound effects from the "Back to the Future" trilogy. It's designed to run smoothly on older devices, bringing cinematic nostalgia to your phone or tablet.
- Iconic time display panels
- Customizable destination, present, and last departed times
- Real-time accurate clock
- Interactive interface for date changes
- Authentic movie sound effects
- Optimized for older devices
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Relive the magic of time travel with the BTTF Clock! Inspired by the iconic clock from the "Back to the Future" trilogy, this app brings the excitement of the DeLorean's dashboard right to your device. Whether you're using a phone or tablet you can enjoy the nostalgia of the iconic time machine. Best of all, it's optimized to run smoothly even on outdated devices, so no one gets left behind in the past. Key Features: • Iconic Time Display: Experience the legendary "Destination Time," "Present Time," and "Last Time Departed" panels, faithfully recreated with stunning detail. • Customizable Dates: Set your own dates for each panel and watch as the app mimics the flux capacitor's data changes. • Real-time Clock: Always stay on schedule with the accurate present time display. • Interactive Interface: Tap on the clock panels to change dates and relive the thrill of setting your time travel destination. • Sound Effects: Enjoy authentic sound effects from the movie to enhance your time travel experience. • Car Mode: Combine the Time Circuits, flux capacitor, and GPS speedometer in an immersive dashboard. • Manual Speed Simulation: Press and hold the speedometer to accelerate and feel speed-responsive haptic feedback as you approach the selected time-travel speed. • Cinematic Time Travel: Reach the configured speed to trigger a full-screen time-travel sequence with visual transitions and sound effects. • Home Screen and CarPlay Widget: Keep the Time Circuits visible at a glance with a configurable widget for your Home Screen and CarPlay. • Optimized for Outdated Devices: Designed to run efficiently on older devices, ensuring smooth performance without compromising on features. Target Audience: • Fans of the "Back to the Future" trilogy. • Retro and classic movie enthusiasts. • Anyone who enjoys unique and themed timekeeping apps. • Users with older devices seeking fun and functional apps.
Screenshots
Verdict
The clearest difference is rating: BTTF Clock at 4.6 against Sci's 3.9. BTTF Clock also leads on ads (none vs shown) and review sentiment (84% vs 54%). On price, ratings volume 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.
BTTF Clock holds the better App Store score, 4.6 against 3.9. Both are backed by a comparable volume of ratings — 14 and 31 respectively. Written reviews point the same way: 54% of Sci's written reviews are positive against 84% of BTTF Clock's.
Sci ships an update every 4 months, BTTF Clock every 5 weeks. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.
| Parameter | Sci | BTTF Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (14 ratings) | 4.6 (31 ratings) — better |
| Positive reviews | 53.6% of reviews | 84.0% of reviews — better |
| Number of ratings | 14 | 31 — better |
| Update frequency | Every 4 months | Every 5 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 18 | 15.6 — better |
| Further details — not scored | ||
| Size | 15 MB | 89 MB |
| Age rating | 9+ | 4+ |
| Developer | iGreenEarth | Sergei Bazarnik |
Customer experience
Sci
BTTF Clock
In-app purchases
Sci
No in-app purchases
BTTF Clock
No in-app purchases
