GPS Astro vs TelecomsCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GPS Astro
This utility app calculates astronomical events like sunrise, sunset, moonrise, and moonset. It supports current or selected locations and displays moon phases and twilight times. Users can save multiple locations and sync events to their calendar.
- Sunrise/sunset times
- Moonrise/moonset times
- Moon phases
- Twilight times
- Save multiple locations
- Calendar sync
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GPS Astro is a utility for the iPhone, iPad and iPod Touch that calculates predicted sunrise, sunset, moonrise, moonset times, moon phases as well as civil, nautical and astronomical twilight depending on your current GPS location or for a selected location. Features: • Save multiple locations • Calendarsync of upcoming moon phases and single moon events • Timezone selection • iPad Split View Support
TelecomsCalc
This app offers a suite of tools for wireless communication and antenna engineering. It simplifies complex calculations for unit conversion, path loss, antenna tilt, Fresnel radius, and more, aiding students and professionals in wireless network planning.
- Unit Converter (dBm, watt, milliwatt)
- Free Space Path Loss Calculator
- Antenna Tilt Coverage Calculator
- Fresnel Radius Calculator
- Parabolic Antenna Gain Calculator
- VSWR to Reflection Coefficient Converter
- Frequency to Wavelength Converter
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Introducing **TelecomsCalc: Wireless Toolbox**, your ultimate companion for all things related to wireless communication and antenna engineering. Whether you're a student, engineer, or enthusiast, TelecomsCalc simplifies complex calculations and conversions with its intuitive interface and comprehensive set of tools. **Key Features:** 1. **Unit Converter:** Instantly convert between dBm, watt, and milliwatt with precision and ease. TelecomsCalc ensures accurate conversions for any power measurement in the context of wireless signals. 2. **Free Space Path Loss Calculator:** Determine signal attenuation over distance effortlessly. Input transmitter power, frequency, and distance to calculate the expected signal strength at the receiver location using the Friis transmission equation. 3. **Antenna Tilt Coverage:** Optimize antenna tilt angles for maximum coverage. TelecomsCalc calculates the horizontal and vertical beamwidths based on antenna height and tilt angle, ensuring optimal signal distribution. 4. **Fresnel Radius Calculator:** Evaluate clearance requirements for reliable microwave link performance. Input frequency, distance, and antenna heights to determine the first Fresnel zone radius and ensure obstruction-free signal propagation. 5. **Parabolic Antenna Gain Calculator:** Compute antenna gain based on frequency and antenna diameter. TelecomsCalc provides precise gain values essential for designing point-to-point communication links. 6. **VSWR to Reflection Coefficient:** Convert Voltage Standing Wave Ratio (VSWR) to Reflection Coefficient with ease. TelecomsCalc helps interpret impedance matching and signal reflection characteristics accurately. 7. **Return Loss and Mismatch Loss Calculator:** Analyze signal integrity and system efficiency. TelecomsCalc converts Return Loss (dB) to percentage and calculates Mismatch Loss (dB) based on impedance mismatch scenarios. 8. **Frequency to Wavelength Converter:** Instantly convert between frequency and wavelength for any electromagnetic wave. TelecomsCalc supports various units (Hz, MHz, GHz) and provides precise wavelength calculations. 9. **Effective Isotropic Radiated Power (EIRP):** Compute EIRP for regulatory compliance and transmission power assessment. TelecomsCalc integrates antenna gain and transmitter power to determine EIRP accurately. **Why Choose TelecomsCalc?** - **User-Friendly Interface:** Navigate through various tools seamlessly with a clean and intuitive design. - **Comprehensive Tools:** From basic unit conversions to advanced antenna calculations, TelecomsCalc covers all aspects of wireless communication engineering. - **Accurate Results:** Built-in algorithms ensure precise calculations for critical parameters in wireless network planning and optimization. Explore the power of the TelecomsCalc. - Visit our detailed page for more information: https://hmtienptithcm.wixsite.com/microwavelinkcalcula/post/telecomscalc-wireless-toolbox Your Privacy Matters: • View our Privacy Policy: https://hmtienptithcm.wixsite.com/microwavelinkcalcula/telecomscalc-privacy-policy • And Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Empower yourself with TelecomsCalc and elevate your understanding and application of wireless technology. Download TelecomsCalc: Wireless Toolbox today and embark on a journey of efficient, informed decision-making in wireless communication engineering.
Screenshots
Verdict
The clearest difference is monetization model: GPS Astro at free against TelecomsCalc's paid. GPS Astro also leads on update cadence (monthly vs every 17 months) and iOS requirement (9.0 vs 16.0). TelecomsCalc's advantage is review sentiment (100% vs 83%). 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
GPS Astro costs $0.99 and TelecomsCalc $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
GPS Astro ships an update monthly, TelecomsCalc every 17 months. The most recent releases landed on September 30, 2026 and June 3, 2026 respectively.
| Parameter | GPS Astro | TelecomsCalc |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 4.8 (117 ratings) — better | — |
| Positive reviews | 83.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 117 — better | — |
| Update frequency | Monthly — better | Every 17 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 54 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Esirion AG | Tien Hoang |
Customer experience
GPS Astro
TelecomsCalc
In-app purchases
GPS Astro
No in-app purchases
TelecomsCalc
No in-app purchases









