Global Time Machine vs RF Power Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Global Time Machine
Visualize all your important time zones on a single, interactive line. Plan meetings and calls across different regions with ease, and see day and night cycles at a glance. Includes calendar integration and automatic location detection.
- World clock for 34,000+ cities
- Drag to travel in time
- Day and night at a glance
- Calendar integration
- Automatic location detection
- Offline functionality
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Global Time Machine shows every time zone you care about on one line. Add your cities, drag any scale and watch them all move together. Made for iPhone Duo: cities and your calendar side by side when open, a desk clock when half-folded. • World clock for 34,000+ cities — search in any language, works offline • Drag to travel in time: plan calls and meetings across time zones • Day and night at a glance: cities where it is night turn dark • Your own place is detected automatically, wherever you travel • Your calendar on the time line — see when you are busy • Half-hour and 45-minute offsets and daylight saving time, always correct • Shake to jump back to now • 12- or 24-hour clock, light and dark themes, 19 languages • Lists (Premium): Separate sets for team, family and friends • Invite a friend: See their local time and when they are busy Free plan: your place and two cities; one friend Premium: Unlimited cities, Lists, Unlimited friends, Find friends in contacts 14-day free trial, then a monthly or yearly subscription. Payment is charged to your Apple ID account. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. You can manage or cancel it in your App Store account settings. Terms of Service: https://thetimemachine.global/terms
RF Power Calculator
This app provides essential RF-related calculations for designers and enthusiasts. It includes conversions for series/parallel networks, thermal resistance, units, and VSWR to return loss.
- Series & Parallel Network conversion
- Thermal resistance calculations
- Unit conversion (Power, Distance, Ratio)
- VSWR to Return Loss conversion
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As Ampleon we share the passion for RF technology which is what we radiate to our customers, suppliers and partners. This application aims at supporting designers and enthusiasts with a lot of common RF-related calculations. Features: Series & Parallel Network conversion Thermal resistance calculations (Junction Temperature, Rth, Thermal Efficiency) Unit conversion (Power, Distance, Ratio) VSWR to Return Loss and Reflection Coefficient conversion
Screenshots
Verdict
The clearest difference is rating: RF Power Calculator at 5.0 against Global Time Machine's 3.7. RF Power Calculator also leads on in-app purchases (none vs 2) and iOS requirement (9.0 vs 17.0). Global Time Machine's advantage is ratings volume (7 vs 1). On price, ads 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. Global Time Machine sells 2 in-app purchases, starting at $0.99 per month. RF Power Calculator asks for nothing beyond the download.
RF Power Calculator holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Global Time Machine has 7 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | Global Time Machine | RF Power Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (7 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 58.3% of reviews | — |
| Number of ratings | 7 — better | 1 |
| Update frequency | Every 5 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, Mac, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | theMakeApp | TriMM Multimedia B.V. |
Customer experience
Global Time Machine
RF Power Calculator
In-app purchases
Global Time Machine
- Premium · Monthly14 Days trial$0.991 Month
- Premium · Yearly14 Days trial$9.991 Year
RF Power Calculator
No in-app purchases
Questions
Is Global Time Machine free?
Is RF Power Calculator free?
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Do Global Time Machine or RF Power Calculator have ads?
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