DeltaClock vs Sol Clock
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
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 βnowβ. DeltaClock lets you scroll time forward or backward to preview any moment: β’ Add your key cities and instantly compare local time in each time zone β’ Scrub the timeline to answer βWhat time will it be there?β in seconds β’ See day and night changes, date rollovers, and time differences visually β’ 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. β’ Schedule reminders for calls, deadlines, lessons, streams, and flights β’ Set reminders by βtheir timeβ (for example 9:00 in New York) and avoid mental math β’ 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. β’ View overlaps for multiple cities in one planner β’ Build plans from overlap blocks (for example best meeting window, handover time, deep work hours) β’ Share plans as calendar events to keep everyone aligned β’ 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: β’ City Time Widget: a stylish widget that shows the current time in your chosen city (great for your key teammate or client location) β’ 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: β’ System / Liquid Glass β’ Neumorphic β’ Retro Neumorphic A clean interface makes time zone conversion and scheduling feel effortless. WHO ITβS FOR DeltaClock is made for: β’ Remote work and global teams β’ Managers coordinating schedules across time zones β’ Freelancers with international clients β’ Students attending classes in another country β’ Travelers planning itineraries and check ins β’ Long distance relationships and families WHY DELTACLOCK DeltaClock combines a world clock, time zone converter, widgets, and meeting planner in one focused app: β’ Fast setup: add cities, compare time zones, find overlap β’ Visual timeline: understand time differences at a glance β’ Fewer mistakes: avoid missed meetings caused by DST or date changes β’ Calendar sharing: turn overlaps into real plans β’ 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: β’ βIs it too late to message London?β β’ βWhen does Sydney start work?β β’ βWhatβs the best meeting time for New York, Berlin, and Tokyo?β β’ βIf the deadline is 17:00 in LA, what time is that for me?β 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/
Sol Clock
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Sol Clock is a solar time clock connecting you to the rhythm of the sun and moon. Sol Clock shows you where the sun actually is, from nautical dawn through solar noon to deep night. Displayed on a beautifully crafted astronomical clock face inspired by medieval clocks of Venice and Prague. Sol Clock displays true solar time alongside standard and UTC, so you always know where you stand in the actual solar day, not just the civil one. The Clock The clock face renders a full 24-hour solar day. The hand tracks the sun's position through the light spectrum of the day. The orbital ring shows the complete sky color spectrum for the day. Computed dynamically based on your location and the day's sunrise and sunset times. Sky Map The Sky Map shows an equidistant northern projection centered on the North Pole with a live terminator line showing the boundary between day and night. Solar Compass The Solar Compass tracks the sun and moon in real time and shows their current relationship to the Equator and Tropics of Cancer and Capricorn. Planisphere An interactive star and planet finder for the naked-eye sky. Roll through and highlight 37 constellations by name, or browse all eight planets at once, each shown at its true position. Naked-eye planets are set apart from the outer planets, which are included for reference. Polaris is always marked, so you always have a fixed point to orient yourself by. Events & Alarms Enable notifications for any point in the solar day: Nautical Dawn, Civil Dawn, Sunrise, Golden Hour End, Morning Light, Solar Noon, Afternoon Light, Golden Dusk, Sunset, Civil Dusk, Nautical Dusk, and Night. Each alarm fires at its precise solar time for your location, rescheduling automatically every day. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: DeltaClock at 18.0 against Sol Clock's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. DeltaClock sells 3 in-app purchases, starting at $1.99 per month and Sol Clock sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 10, 2026 and October 15, 2026 respectively.
| Parameter | DeltaClock | Sol Clock |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days | Every 4 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 β better | 26.0 |
| Further details β not scored | ||
| Size | 24 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Ameliia Shekikhacheva | Mark Zigadlo |
In-app purchases
DeltaClock
- Pro Subscription Monthly$1.991 Month
- Pro Subscription Annual$9.991 Year
- Lifetime purchase$24.99
Sol Clock
- Pro Monthly7 Days trial$0.991 Month
- Pro Annual7 Days trial$7.991 Year









