Tempus World Clock vs Simple Time Converter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tempus World Clock
Easily track multiple time zones with customizable clocks for people and places. Convert times instantly, find optimal meeting slots across different regions, and view city details including weather and sunrise/sunset.
- Customizable clocks with names and colors
- Instant time conversion across zones
- Meeting time finder with working hours
- City detail view with weather and sunrise/sunset
- Apple Watch app and complications
- Home Screen widgets
- iCloud sync across devices
Read full descriptionHide full description
Tempus is a world clock and time zone converter built for people who work, travel, and stay in touch across time zones. It is at home on iPhone, iPad, and Apple Watch. NAME YOUR CLOCKS Add clocks for cities or for the people you talk to. Give each one a custom name, an emoji, and a color tag so "Mum in Sydney" or "Design team, Berlin" is readable at a glance. Choose emoji from a searchable catalog with recents and suggestions for the city. Pick analog or digital faces, 12 or 24 hour time, and see the time difference from wherever you are. CONVERT TIMES INSTANTLY Pick any time in any zone and see it in all your clocks at once. Drag the time scrubber to slide through the day and watch every clock move together. Day and night indicators show who is awake. PROFILES Group your clocks into profiles such as Work or Family and switch between them from the title on iPhone or the sidebar on iPad. A city can be in several profiles, and the active profile syncs to your other devices and Apple Watch. FIND A MEETING TIME THAT WORKS Select two or more clocks, set working hours for each, and Tempus shows the overlapping windows where everyone is available. Add the meeting to your calendar in one tap or share it as an .ics invite. CITY DETAIL Tap any clock for a full city view: a skyline illustration that changes with the time of day, sunrise and sunset on a daylight arc, and current weather conditions. IPAD On iPad, Tempus uses a native split layout: browse your clocks in a sidebar while City Detail stays open beside them. Time Converter and Meeting Finder open in the detail column with room for a full-width overlap timeline. Keyboard shortcuts and pointer hover are supported throughout. APPLE WATCH Tempus on Apple Watch shows your clocks on your wrist, lets you convert times with the Digital Crown, and offers complications for your favorite clocks. Clocks sync instantly between iPhone and Apple Watch. WIDGETS AND SYNC Home Screen widgets keep your clocks in view. Your clocks sync across all your devices with iCloud. PRIVACY FIRST Tempus has no account, no ads, and no tracking. Your clocks are stored on your device and in your private iCloud database. Weather is provided by Apple Weather for the cities you add, never for your own location.
Simple Time Converter
This lightweight utility app performs simple time conversions without accessing any user data. Its core function is a straightforward algorithm for converting time values.
- Time conversion algorithm
- Lightweight design
- No user data access
- Simple interface
Read full descriptionHide full description
We never show ads, and we never collect your data. A free app without the bloat. Compare the size of this app (~2MB) against other time conversion apps.
Screenshots
Verdict
The clearest difference is price: Simple Time Converter at Free against Tempus World Clock's $1.99. Simple Time Converter also leads on iOS requirement (15.0 vs 17.0). On rating, ratings volume, update cadence and ads 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
Simple Time Converter is free to download; Tempus World Clock costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Tempus World Clock against 5.0 for Simple Time Converter. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Tempus World Clock ships an update fortnightly, Simple Time Converter every 3 weeks. The most recent releases landed on October 21, 2026 and October 19, 2026 respectively.
| Parameter | Tempus World Clock | Simple Time Converter |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 52 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Viktor Gamov | Irene Ryu |
Customer experience
Tempus World Clock
Simple Time Converter
In-app purchases
Tempus World Clock
No in-app purchases
Simple Time Converter
No in-app purchases
Questions
Is Tempus World Clock free?
Is Simple Time Converter free?
Which has better reviews, Tempus World Clock or Simple Time Converter?
Do Tempus World Clock or Simple Time Converter have ads?
Which is updated more often, Tempus World Clock or Simple Time Converter?
Other comparisons
