Comparison

Decay calc vs Microwave Link Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Decay calc

This tool calculates the decay of radioactive isotopes over time, considering half-life for accurate activity predictions. It's useful in nuclear medicine, environmental monitoring, and radiation safety for handling and disposal of materials.

Highlights
  • Radioactive isotope decay calculation
  • Half-life integration
  • Activity prediction
  • Decay constant determination
  • Radiation dose calculation
Features
Read full description

Decay calc is a tool used to calculate the decay of radioactive isotopes over time. It takes into account the half-life of the isotope and allows for accurate predictions of the remaining activity of the isotope at any given time. Decay calc can be used in a variety of fields, such as nuclear medicine, environmental monitoring, and radiation safety. It can help determine the appropriate handling and disposal of radioactive materials and ensure the safety of individuals who may come into contact with them. In addition to calculating the remaining activity of the isotope, decay calc can also be used to determine the decay constant, which is a measure of the rate at which the isotope decays. This information can be used to calculate the radiation dose received by individuals who are exposed to the isotope. Overall, decay calc is a useful tool for anyone working with radioactive materials or interested in learning more about radioactivity and its effects. It provides accurate and reliable calculations that can help ensure safety and proper handling of radioactive materials.

About

Microwave Link Calculator

This tool helps telecommunications engineers calculate and optimize microwave links. It provides precise distance, azimuth, and elevation computations, antenna configuration, and integrated mapping for accurate outdoor equipment placement.

Highlights
  • Precise distance, azimuth, and elevation calculations
  • Fresnel Zone computation
  • Antenna down tilt and azimuth determination
  • Antenna gain and received power prediction
  • Integrated Apple Maps view
  • Obstacle simulation for elevation profiles
  • Compass with haptic feedback
Features
Read full description

Microwave Link Calculator: plan point-to-point microwave links in minutes Built for telecom and transmission engineers, Microwave Link Calculator turns two site coordinates into everything you need on the tower: distance, azimuth, tilt, Fresnel zone, terrain profile and expected receive level. It works with links from any vendor, such as NEC Pasolink, SIAE, Ceragon, Ericsson MINI-LINK and Huawei. NEW IN THIS UPDATE • Site library: import your sites from a CSV or text file, paste a list, or add them one by one. • GPS autofill: start typing a site name in a link and pick it from the suggestions. Its coordinates are filled in for you, and you can still edit them. • Map crosshair: move the map under the crosshair and tap to place a site exactly where you want it. • Redesigned link form: Site A and Site B side by side, one "Set" button per site (pick on map, current GPS or paste coordinates), and quick + / − buttons for antenna height and Tx power. • Smart checks: warnings when antenna efficiency is outside 0.5–0.8 or both sites have the same name. • Elevation profiles for links of any length, including links over 100 km. • Available in 13 languages. LINK CALCULATIONS • Distance, azimuth and tilt (up/down) between the two sites. • Fresnel zone and terrain elevation along the whole path. • Antenna gain and expected received power in free-space conditions, based on frequency, Tx power, antenna diameter and efficiency. • Antenna height above sea level for each site. • Metric or imperial units (m / ft, and m / ft / in for antenna diameter). MAP AND FIELD TOOLS • See your link on Apple Maps with standard, satellite or satellite-with-roads styles, and line it up with nearby landmarks. • Add obstacles such as new buildings or trees and see them on the elevation profile. • Built-in compass with haptic feedback for precise azimuth alignment when you're on site. • Pick a site by tapping the map, using the crosshair, or searching for a place. YOUR DATA, EVERYWHERE Links and saved sites are stored on your device and synced through iCloud, so they're ready on all your iPhones and iPads. Some features, such as the elevation profile, obstacles and the compass, require a Pro subscription. Learn more: https://hmtienptithcm.wixsite.com/microwavelinkcalcula/about-4 Subscription Details:  Unlock all features with auto-renewable subscriptions: • Choose from 1 month ($4.99), 3 month ($12.99) and 12 month ($45.99) durations • Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. • Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase. Your Privacy Matters: • View our Privacy Policy: https://hmtienptithcm.wixsite.com/microwavelinkcalcula/policy • And Terms of Use:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Download the Microwave Link Calculator now and elevate your telecommunications projects with precision and efficiency!

Screenshots

Decay calc3 screens
Microwave Link Calculator4 screens

Verdict

The call

The clearest difference is review sentiment: Microwave Link Calculator at 100% against Decay calc's 50%. Microwave Link Calculator also leads on update cadence (every 9 days vs every 3 months). Decay calc's advantage is monetization model (free with in-app purchases vs subscription) and iOS requirement (15.2 vs 17.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Decay calc sells 1 one-off in-app purchase and Microwave Link Calculator sells 13 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Decay calc ships an update every 3 months, Microwave Link Calculator every 9 days. The most recent releases landed on October 8, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Decay calc versus Microwave Link Calculator: the parameters behind the verdict, then further details
ParameterDecay calcMicrowave Link Calculator
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings1 — better—
Update frequencyEvery 3 monthsEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.2 — better17.0
Further details — not scored
Size27 MB17 MB
Age rating17+4+
DeveloperAlexey BaranovTien Hoang

Customer experience

Decay calc

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Microwave Link Calculator

Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Decay calc

One-time1
  • Radio calc$0.99
13 purchases

Microwave Link Calculator

Subscriptions13
  • All Access7 Days trial$1.991 Month
  • All Access3 Days trial$2.991 Month
  • All Access7 Days trial$2.991 Month
Show 10 more
  • All Access1 Month trial$2.991 Month
  • All access.$4.991 Year
  • All access3 Days trial$4.991 Month
  • All access3 Days trial$7.993 Months
  • All Access7 Days trial$15.996 Months
  • All Access1 Month trial$15.996 Months
  • All access$24.996 Months
  • All access7 Days trial$29.991 Year
  • All Access7 Days trial$29.991 Year
  • All Access1 Month trial$29.991 Year

Questions

Is Decay calc free?
Decay calc is free to download, with in-app purchases available.
Is Microwave Link Calculator free?
Microwave Link Calculator is free to download, with in-app purchases available.
Do Decay calc or Microwave Link Calculator have ads?
Neither Decay calc nor Microwave Link Calculator shows ads.
Which is updated more often, Decay calc or Microwave Link Calculator?
Decay calc ships an update every 3 months, and Microwave Link Calculator every 9 days. Most recently, Decay calc was updated on October 8, 2026 and Microwave Link Calculator on October 24, 2026.

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