Ctzone vs DeltaClock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ctzone
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Ctzane is an offline app that helps you explore, track, and manage time zones around the globe, whether you’re a frequent traveler, remote worker, or just curious about world clocks. With an intuitive interface, CTZone delivers fast, reliable access to local times, personalized favorites, and flexible formatting. Ctzone can be accessed completely offline, storing time zone and location data directly on the device. With an intuitive interface, you can dynamically select your home and destination countries and see how their local times compare with just a few taps. Key Features & Functionality: - Real‑Time Search & Filtering instantly find any city or country by typing a few letters. Ctzone’s search filters your list as you type, so you’ll never scroll through hundreds of entries again. - Pin & Bookmark Favorites Tap the pin icon on a location’s detail screen to bookmark it. - 12‑Hour and 24‑Hour Toggle Switch between AM/PM and 24‑hour formats with one tap. Your preference is saved automatically, so Ctzone always displays times the way you like. - Offline access to stores pinned locations, search, and format settings locally. Once you’ve loaded your list, you don’t need a network connection to view your favorites again. Use Cases - Travel Planning: Compare departure and arrival times across zones before you book. - Remote Collaboration: Coordinate meetings with teammates in multiple countries without mental math. - Event Scheduling: Verify time conversions for global webinars, live streams, or virtual conferences. Ctzone brings the world’s clocks to your pocket with a modern, user‑friendly design. Download now and take control of time, anywhere, anytime. Meet the Ctzone Squad Crafted with passion by Ali An Nuur, Steven, Aria Maulana
DeltaClock
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DeltaClock is a stylish world clock and time zone meeting planner built for people who work across multiple time zones. If you collaborate with teammates, clients, friends, or family in different countries, DeltaClock helps you compare cities, convert time zones, and schedule meetings without guesswork. A WORLD CLOCK YOU CAN MOVE THROUGH TIME Most world clock apps only show “now”. DeltaClock lets you scroll time forward or backward to preview any moment: • Add your key cities and instantly compare local time in each time zone • Scrub the timeline to answer “What time will it be there?” in seconds • See day and night changes, date rollovers, and time differences visually • Reduce mistakes during daylight saving time changes (DST) TIME ZONE REMINDERS THAT MAKE SENSE Create reminders based on the time in another city, and DeltaClock converts it to your local time automatically. • Schedule reminders for calls, deadlines, lessons, streams, and flights • Set reminders by “their time” (for example 9:00 in New York) and avoid mental math • Great for distributed teams, freelancers, and international routines OVERLAP PLANNER FOR REMOTE TEAMS DeltaClock is also a meeting planner: it shows overlap windows across multiple time zones so you can pick a time that works for everyone. • View overlaps for multiple cities in one planner • Build plans from overlap blocks (for example best meeting window, handover time, deep work hours) • Share plans as calendar events to keep everyone aligned • Perfect for recurring meetings, standups, interviews, and cross border projects WIDGETS: SEE TIME AT A GLANCE Add DeltaClock widgets to your Home Screen for instant time zone visibility: • City Time Widget: a stylish widget that shows the current time in your chosen city (great for your key teammate or client location) • Project Timeline Widget: a compact view that highlights overlap windows across your project cities so you can spot meeting friendly hours quickly THREE BEAUTIFUL THEMES Choose the look that fits your style: • System / Liquid Glass • Neumorphic • Retro Neumorphic A clean interface makes time zone conversion and scheduling feel effortless. WHO IT’S FOR DeltaClock is made for: • Remote work and global teams • Managers coordinating schedules across time zones • Freelancers with international clients • Students attending classes in another country • Travelers planning itineraries and check ins • Long distance relationships and families WHY DELTACLOCK DeltaClock combines a world clock, time zone converter, widgets, and meeting planner in one focused app: • Fast setup: add cities, compare time zones, find overlap • Visual timeline: understand time differences at a glance • Fewer mistakes: avoid missed meetings caused by DST or date changes • Calendar sharing: turn overlaps into real plans • Widgets: your key cities and project overlaps always visible Work across time zones with confidence. Compare time zones, plan meetings, and set time zone reminders with DeltaClock. HOW IT WORKS 1. Add the cities you care about (work, home, clients, travel). 2. Use the World Clock timeline to slide into the future or the past. 3. Switch to the Overlap Planner to find shared working hours. 4. Create a plan and export it as a calendar event to share with others. BUILT FOR CLARITY DeltaClock focuses on the most common multi time zone tasks: world clock comparison, time zone conversion, and meeting planning. Instead of doing math, you see the answer: • “Is it too late to message London?” • “When does Sydney start work?” • “What’s the best meeting time for New York, Berlin, and Tokyo?” • “If the deadline is 17:00 in LA, what time is that for me?” USE IT AS A TIME ZONE CONVERTER Need a quick time zone converter? Scrub to a time in one city and read the matching time in every other city. DeltaClock makes time zone conversion fast, visual, and reliable for daily scheduling. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Ctzone at none against DeltaClock's 3. DeltaClock's advantage is update cadence (every 4 days vs every 4 weeks). 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. DeltaClock sells 3 in-app purchases, starting at $1.99 per month. Ctzone asks for nothing beyond the download.
Ctzone ships an update every 4 weeks, DeltaClock every 4 days. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.
| Parameter | Ctzone | DeltaClock |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 18 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Ali An Nuur | Ameliia Shekikhacheva |
In-app purchases
Ctzone
No in-app purchases
DeltaClock
- Pro Subscription Monthly$1.991 Month
- Pro Subscription Annual$9.991 Year
- Lifetime purchase$24.99









