Comparison

Time Lock vs BTTF Clock

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

Head to head
About

Time Lock

Send messages that reveal themselves only at a specific time or for a limited duration. Enhance conversations with timed secrets or exclusive meeting details. It's a fun way to build anticipation and curiosity.

Highlights
  • Send timed messages
  • Set message visibility duration
  • Share secrets
  • Exclusive meeting details
  • iMessage integration
  • Send message reminders
Features
Read full description

Thank you for your support. Over a million time locks have been created! -- With time lock, you decide when your message will be visible an for how long. It's a cool new way to spice up your conversations and make your friends curious about the message. Share secrets in a group and only make them visible for a couple of seconds. Or share details on where to meet and make it more exclusive. It's really fun, try it out. The app integrates perfectly with iMessage, it's super easy to use. Because we don't want your messages to be forgotten, we have added a button to quickly send a reminder. Want to remove the app? Follow the instructions here: www.bit.do/del-app

About

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.

Highlights
  • 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
Features
Read full description

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 Best of all, it's optimized to run smoothly even on outdated devices, so no one gets left behind in the past.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

Time Lock3 screens
BTTF Clock4 screens

Verdict

The call

The clearest difference is price: BTTF Clock at Free against Time Lock's $0.99. BTTF Clock also leads on review sentiment (83% vs 40%) and rating (4.6 vs 2.8). Time Lock's advantage is iOS requirement (11.0 vs 15.6). On ratings volume, ads and device support 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

BTTF Clock is free to download; Time Lock costs $0.99 up front. Time Lock sells 1 one-off in-app purchase. BTTF Clock asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

BTTF Clock holds the better App Store score, 4.6 against 2.8. Both are backed by a comparable volume of ratings — 12 and 28 respectively. Written reviews point the same way: 40% of Time Lock's written reviews are positive against 83% of BTTF Clock's.

UpkeepUpdate frequency

Time Lock ships an update every 10 months, BTTF Clock every 2 months. The most recent releases landed on August 17, 2026 and September 30, 2026 respectively.

Scorecard7 real differences · 3 level
Time Lock versus BTTF Clock: the parameters behind the verdict, then further details
ParameterTime LockBTTF Clock
Price$0.99Free — better
Rating2.8 (12 ratings)4.6 (28 ratings) — better
Positive reviews40.0% of reviews83.3% of reviews — better
Number of ratings1228 — better
Update frequencyEvery 10 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.6
Further details — not scored
Size26 MB64 MB
Age rating4+4+
DeveloperFanatic DevelopmentSergei Bazarnik

Customer experience

Time Lock

All ratings12 ratings
Positive41.7%
Neutral8.3%
Negative50.0%
Written reviews5 reviews
Positive40.0%
Neutral0.0%
Negative60.0%

BTTF Clock

All ratings28 ratings
Positive92.9%
Neutral3.6%
Negative3.6%
Written reviews24 reviews
Positive83.3%
Neutral8.3%
Negative8.3%

In-app purchases

1 purchases

Time Lock

One-time1
  • Unlimited MessagesFree
None

BTTF Clock

No in-app purchases

Questions

Is Time Lock free?
Time Lock costs $0.99, and also offers in-app purchases.
Is BTTF Clock free?
BTTF Clock is free to download, with no in-app purchases.
Which has better reviews, Time Lock or BTTF Clock?
BTTF Clock is rated higher. Time Lock averages 2.8 out of 5 from 12 ratings, while BTTF Clock averages 4.6 from 28 ratings.
Do Time Lock or BTTF Clock have ads?
Neither Time Lock nor BTTF Clock shows ads.
Which is updated more often, Time Lock or BTTF Clock?
Time Lock ships an update every 10 months, and BTTF Clock every 2 months. Most recently, Time Lock was updated on August 17, 2026 and BTTF Clock on September 30, 2026.

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