Flip Clock vs Worlds Apart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flip Clock
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Your flip clock, reimagined. One screen. Three modes. Zero clutter. A large flip-digit clock that shows time like a retro split-flap display. Swipe left for Pomodoro timer, right for stopwatch. No menus, no tabs, no distractions. FREE FEATURES (forever): • Full-screen flip clock with 12/24-hour display • Optional seconds display — card or mini style • Date and weekday at a glance • Stopwatch with start/pause/reset • Pomodoro timer with customizable duration • 2 alarms • 1 countdown event • Monthly calendar view • Cycle tracker with predictions • Portrait and landscape support • Screen always-on option • English and Chinese PREMIUM (one-time, no subscription): • Multiple color themes • Flip animation styles and sound effects • Custom app icons • Unlimited alarms with repeat rules • Unlimited countdown events with categories • Calendar integration with alarms and countdowns • Week view in calendar • Cycle tracker Face ID lock, reminders, data export Most clock apps bury you in menus or lock features behind subscriptions. SimpleClock gives you the essentials free forever, with a single one-time purchase for power users. 100% offline. No account. No data collection. Your time. Your device. Simple.
Worlds Apart
Understand the local time for people you care about, not just places. This app helps you find considerate times to connect and plan calls or travel by visualizing time zone differences and their impact on daily routines.
- Humanize time zones
- Track local time, date, weather, and part of day for contacts
- Contact signals for considerate communication
- Time Machine for planning calls
- Interactive widgets for home screen access
- Offline travel planning with Fly Mode
- Private by default, no tracking
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World clocks tell you what time it is somewhere. Worlds Apart helps you understand what that time means for someone you care about. Are they starting their day or winding down? Is now a considerate time to call? When might work better for both of you? And when you travel, how does everyone’s time change along the way? Worlds Apart makes time zones feel human—not like a list of clocks, but like a time machine centered on people. PEOPLE, NOT JUST PLACES Save family, friends, teammates, or cities. See their local time, date, weather, part of day, and time difference from you at a glance. Contact signals such as Good Time, Maybe, and Quiet Hours provide simple guidance based on local time and contact hours you control. They never claim to know someone’s actual availability. PLAN WITH TIME MACHINE Scrub forward or backward through time to see what the same moment looks like for everyone. Find a better time to call without calculating time-zone differences yourself. SET UP INTERACTIVE WIDGETS Keep the people and places you care about on your Home Screen. Check their local context and scrub through time directly from interactive widgets—without opening the app. TRAVEL WITH FLY MODE Enter your departure, destination, dates, times, and optional layover. Fly Mode turns the itinerary into a visual journey through time while keeping the local time for people back home visible. Fly Mode works offline and follows the itinerary you entered. It does not claim to provide live flight location, delay, or arrival information. PRIVATE BY DEFAULT • No account required • No contacts import • No calendar access • No advertising tracking • No third-party analytics • Saved people, places, preferences, and journeys remain on your device Whether the people you love are across the country, across the world, or waiting for you at your next stop, Worlds Apart helps you find a better moment to connect.
Screenshots
Verdict
The clearest difference is in-app purchases: Worlds Apart at none against Flip Clock's 1. Worlds Apart also leads on update cadence (fortnightly vs monthly). Flip Clock's advantage is review sentiment (100% vs 67%). On price, ads, device support and iOS requirement 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. Flip Clock sells 1 one-off in-app purchase. Worlds Apart asks for nothing beyond the download.
Flip Clock ships an update monthly, Worlds Apart fortnightly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Flip Clock | Worlds Apart |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.2 (5 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 66.7% of reviews |
| Number of ratings | — | 5 — better |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | 磊 刘 | Jaishree Garg |
Customer experience
Flip Clock
Worlds Apart
In-app purchases
Flip Clock
- SimpleClock Pro Edition$2.99
Worlds Apart
No in-app purchases









