QRCodeClock vs BTTF Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
QRCodeClock
This application displays the current time encoded as a QR code. It prevents your device from sleeping while active and updates the QR code every second. It is designed for iOS devices and is free to download.
- Displays time as QR code
- Prevents device sleep
- Updates every second
- iOS 5.0+ compatible
- Free to download
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Code Clock is a clock that displays the time as a QR Code. CodeClock works on all devices running iOS 5.0 or newer. Features: • Displays the time as a QR Code. FAQ: Does this app scan QR codes? No. Does this app decode QR codes? No. Does this app display the time in a human readable format? No. Unless you're a human that can visually decode QR codes. Then yes. Is that all it does? Yes. How often does the code update? Every second. Really, that's all it does? Yes. Will my device sleep when the app is active? No. The app disables device sleep when active. You're serious. That's all it does? YES.
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 Best of all, it's optimized to run smoothly even on outdated devices, so no one gets left behind in the past.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 update cadence: BTTF Clock at every 2 months against QRCodeClock's every 63 months. BTTF Clock also leads on ratings volume (28 vs 3). QRCodeClock's advantage is rating (5.0 vs 4.6) and review sentiment (100% vs 83%). On price, ads, in-app purchases and monetization model 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.
QRCodeClock holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: BTTF Clock has 28 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of QRCodeClock's written reviews are positive against 83% of BTTF Clock's.
QRCodeClock ships an update every 63 months, BTTF Clock every 2 months. The most recent releases landed on June 5, 2026 and September 26, 2026 respectively.
| Parameter | QRCodeClock | BTTF Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 4.6 (28 ratings) |
| Positive reviews | 100.0% of reviews — better | 82.6% of reviews |
| Number of ratings | 3 | 28 — better |
| Update frequency | Every 63 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 0 MB | 64 MB |
| Age rating | 4+ | 4+ |
| Developer | Jeff Menter | Sergei Bazarnik |
Customer experience
QRCodeClock
BTTF Clock
In-app purchases
QRCodeClock
No in-app purchases
BTTF Clock
No in-app purchases
Questions
Is QRCodeClock free?
Is BTTF Clock free?
Which has better reviews, QRCodeClock or BTTF Clock?
Do QRCodeClock or BTTF Clock have ads?
Which is updated more often, QRCodeClock or BTTF Clock?
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