# Circa³ – Time Zone Converter — World Time and Meeting Planner > World time zone converter and meeting planner for global collaboration. (iPhone/iPad app by Kostiantyn Zuiev.) - Source: https://appshunter.io/ios/app/circa-time-zone-converter/id968698352 (this page in markdown: same URL + `.md`) - Developer: [Kostiantyn Zuiev](https://appshunter.io/developer/1053341480) - Category: Utilities, Travel - Price: $3.99 - Rating: 4.50/5 from 382 App Store ratings · 133 written reviews indexed - Age rating: 4+ - Requires: iOS 11.0 · 39 MB - Languages: American English - Released: 2015-03-29 - Data updated: 2026-08-24 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/circa-time-zone-converter/id968698352/reviews.md ## What is Circa³? Circa helps you keep time across multiple locations and time zones. Find the best times to connect and quickly create meeting invitations that work for everyone. Circa keeps teams in sync across multiple locations. Features: - Visually compare time across multiple locations - Quickly see working hour overlaps - Connect your calendars to check your schedule - Personal, organize in your own way - Create one-touch meeting invitations Featured: *** Best apps for tech-savvy travelers *** "10 of the best travel apps ... that you'll actually use." - The Guardian "This App Makes It Easy To Collaborate Across The Globe." - FASTCOMPANY ## Key features - Compare time across multiple locations - View working hour overlaps - Integrate calendars - Organize personally - Create one-touch meeting invitations ## Recent user reviews (10 of 133) All indexed reviews: https://appshunter.io/ios/app/circa-time-zone-converter/id968698352/reviews.md ### 5/5 — Fantastically useful *2026-02-05* I’ve used this for keeping track of various time zones for years now. ### 5/5 — Essential app! *2026-01-07, version 3.3.1* I use it every day ### 5/5 — The BEST way to avoid time zone conflicts *2025-03-22* We are global nomads, and have contacts we work with around the world. This app is perfect for setting up appointments and knowing when to pick up the phone and call. ### 1/5 — Doesn’t work *2025-01-07, version 3.3.1* Can’t add a new city so app is useless ### 5/5 — Best time zone app *2025-01-05, version 3.3.1* I love this app. It’s the best time zone app ever. It’s simple to use and very clear. I use it multiple times a day. ### 5/5 — Disappointed *2024-10-31, version 3.3.1* OK, but would like names on color bands. ### 5/5 — Most useful *2024-09-16, version 3.3.1* I use this almost every day. It is a nice, natural UI and does just what I need. ### 5/5 — Awesome little app. The best TZ app out there and I’ve tried most of them *2024-09-06, version 3.3.1* Cz ### 1/5 — Keine Updates *2024-07-06, version 3.3.1* Funktioniert nicht gut ### 4/5 — Simplistic Perfection *2024-03-23, version 3.3.1* A great looking app that does what it says on the tin ## Frequently asked questions about Circa³ ### What does Circa³ do? Circa³ helps you manage time across multiple locations and time zones. It allows you to visually compare times, find the best working hour overlaps for meetings, and quickly create meeting invitations that are convenient for everyone involved. ### What are the key features of Circa³? Key features include visually comparing time across multiple locations, quickly seeing working hour overlaps, connecting your calendars to check your schedule, personal organization options, and the ability to create one-touch meeting invitations. ### Is Circa³ free to use? Yes, based on the provided information, the application is free to use and does not feature in-app purchases or advertisements. ### Who would benefit from using Circa³? This app is ideal for individuals and teams who frequently collaborate or have members located in different time zones. It's particularly useful for remote teams, international businesses, and anyone needing to schedule meetings across the globe. ### Can Circa³ integrate with my existing calendar? Yes, Circa³ allows you to connect your calendars. This integration helps you check your personal schedule directly within the app, making it easier to find suitable meeting times that don't conflict with your existing commitments. ## Version history (last 5 releases) ### 3.3.1 — 2019-06-20 Fixes crash and data loss after update from previous version 3.2. ### 3.3 — 2019-06-16 Now with Widget. Quickly glance on all locations right from lock screen. Swipe right and tap Edit from Notification Center to add it. Further improvements to Apple Watch app. Tap to switch between full name or current time with abbreviations. ### 3.2 — 2019-05-16 Give a name to locations. New tutorial. Switch from name to time on Apple Watch. Circa now allows you to name your locations. Tap in the list to go to location preferences. Then simply tap on a name to edit it. Deleting your custom name will revert to city name. This version also features new tutorial. Also accessible from settings if you want to view it again. And finally Apple Watch app now able to switch between name of location and its time. Simply tap on the dial to switch between them. ### 3.1.4 — 2019-03-30 Fixes issue with daylight saving—summer time not being updated for US/Europe when selecting future date. ### 3.1.3 — 2019-02-28 Fixes crush on iPad when trying to select time. ## Apps similar to Circa³ | App | Rating | Price | Category | | --- | --- | --- | --- | | [Overlap: World Clock](https://appshunter.io/ios/app/overlap-world-clock/id1516950324) | 4.8 (840) | Free | Utilities | | [World Clock Pro: Convert Time](https://appshunter.io/ios/app/world-clock-pro-convert-time/id969635117) | 4.8 (1,349) | Free | Utilities | | [World Time Clock Master](https://appshunter.io/ios/app/world-time-clock-master/id6448859727) | 4.6 (816) | Free | Utilities | | [World Clock -Time Converter-](https://appshunter.io/ios/app/world-clock-time-converter/id622366157) | 3.9 (14) | Free | Utilities | | [World Clock-Timezone Converter](https://appshunter.io/ios/app/world-clock-timezone-converter/id1425332311) | 4.8 (600) | Free | Utilities | | [World Clock Time Zone Widget](https://appshunter.io/ios/app/world-clock-time-zone-widget/id912698955) | 4.7 (30,313) | Free | Utilities | ## More apps by Kostiantyn Zuiev - [Melange Maestro Cocktails](https://appshunter.io/ios/app/melange-maestro-cocktails/id1053341481) All apps by Kostiantyn Zuiev: https://appshunter.io/developer/1053341480 ## Related topics [time zone scheduler](https://appshunter.io/ios/topics/time-zone-scheduler) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*