Flag Time vs DeltaClock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flag Time
This app provides a minimalist time zone widget featuring flags to help you quickly see the local time in various international locations. It's ideal for staying connected with colleagues, friends, and family across different time zones, offering customization and daylight saving time information.
- Manage multiple countries and flags
- 20,000 cities worldwide
- Customize city names
- Daylight Saving Time info
- Share time zones
- 24h or 12h clock format
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Stop guessing time zones. Get it right instantly. Flag Time helps you understand global time at a glance. Whether you're working with international teams or staying in touch with family abroad, you always know the right time to connect. See multiple cities, compare time zones, and plan without confusion. KEY FEATURES • Instantly compare time across multiple cities • Plan meetings across time zones with ease • Clear labels like WORK, EARLY, LATE, NIGHT • Create reminders directly from the planner • Beautiful widgets for fast access anytime • 20,000+ cities worldwide • Automatic daylight saving time updates • Customize city names and preferences PRO FEATURES • Unlimited cities • Compare up to 4 cities in the planner • Unlimited reminders and full reminder history • All widgets and layouts unlocked Perfect for remote work, global teams, and travel. By the way, AppStore reviews are very helpful to us. If you think Flag Time is worthy, would you mind taking a moment to write a nice review? We'd greatly appreciate it. Thanks for using Flag Time! - If you have a question or need immediate support, please send an email to support@8mobile.org. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.8mobile.org/privacy-policy/ *** Term of Service *** Users who use the Services offered by Flag Time declare to know and accept these terms and conditions. The Service is provided by the Owner "as is", without any express or implied warranty for its accuracy or availability. The Owner declines all responsibility in case of errors, inaccessibility of the platform, technical problems related to the service or failure to update the data by the suppliers of the same. All data are for information only and have no legal value. The Owner reserves the right, at any time and without notice, to add, remove features or characteristics or suspend or interrupt the provision of the Service, either temporarily or permanently. The User expressly exonerates and relieves the Owner from any liability, to the extent permitted by the applicable law, in relation to any damage claims of any kind and nature of its own and/or third parties including direct, indirect, punitive, incidental, revenue, loss of data or replacement costs arising from or in any way connected to this agreement.
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 update cadence: DeltaClock at every 4 days against Flag Time's every 10 months. On price, ads, in-app purchases 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
Both are free to download. Flag Time sells 3 in-app purchases, starting at $0.99 per 7 days and DeltaClock sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Flag Time ships an update every 10 months, DeltaClock every 4 days. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.
| Parameter | Flag Time | DeltaClock |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (3 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 10 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 9 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Ottorino Bruni | Ameliia Shekikhacheva |
In-app purchases
Flag Time
- 1 Week3 Days trial$0.997 Days
- 1 Year$7.991 Year
- Forever$14.99
DeltaClock
- Pro Subscription Monthly$1.991 Month
- Pro Subscription Annual$9.991 Year
- Lifetime purchase$24.99









