Comparison

dB Calculations vs RF calculator & Smith Chart

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

Head to head
About

dB Calculations

This app provides tools for calculating and converting various electrical units. It includes calculators for dBm and voltage levels, as well as a unit converter for a wide range of power and voltage measurements.

Highlights
  • dBm power level calculator
  • Voltage level calculator
  • Unit converter for power and voltage
  • Supports dBm, dBW, mW, W, mV, V, dBV, dBµV, dBu
  • Accommodates individual impedance values
Features
Read full description

Keep in mind that calculations based on coherent versus incoherent levels can yield significantly divergent results. If you encounter unexpected outcomes, ensure you first check the correlated/uncorrelated settings of this application. dbm Calculator: This functionality facilitates the addition and subtraction of various power levels expressed in dBm and watt units. Be aware of the versatile nature of this tool when dealing with power levels. VoltageCalculator: Designed for the addition and subtraction of both correlated and uncorrelated voltage levels. This tool ensures precision in managing voltage variations, providing flexibility in your calculations. Unit Converter: A versatile tool that computes the equivalent values for a given entry in units such as dBm, dBW, mW, W, mV, V, dBV, dBµV, and dBu. It accommodates individual impedance values, offering comprehensive conversions across a range of units to suit your specific needs.

About

RF calculator & Smith Chart

Features
Read full description

RF Calculator & Smith Chart is an all-in-one RF engineering toolkit for impedance matching, RF network analysis, antenna calculations, filters, attenuators and wireless system design. Built for RF engineers, electronics engineers, students, technicians and radio enthusiasts, it brings essential RF calculations and design tools together in one convenient app. Analyze impedance, work with Smith Charts, calculate VSWR and S11, design matching networks, estimate path loss, build RF attenuators and evaluate wireless links without jumping between multiple tools. RF & IMPEDANCE TOOLS • Smith Chart for impedance visualization and matching • S11 and reflection analysis • Reflection coefficient calculator • VSWR calculator • Impedance and transmission-line calculations • Cascaded RF network calculations IMPEDANCE MATCHING Design and analyze common RF matching networks: • L matching networks • Pi (π) matching networks • T matching networks • Stub tuner calculations Useful for antenna matching, RF amplifiers, transmission lines and other impedance-matching applications. RF FILTER DESIGN Calculate and design common passive and RF filters: • RC filters • RL filters • RLC networks • Butterworth LC low-pass filters • Chebyshev LC low-pass filters • Filter designs up to 8th order • Microstrip band-pass filters • Microstrip band-reject / notch filters RLC CIRCUITS Analyze frequency-dependent RLC networks: • Series RLC circuits • Parallel RLC circuits • Resonant frequency calculations • Frequency behavior and reactance RF ATTENUATOR DESIGN Quickly calculate standard RF attenuator networks: • Pi (π) attenuator • T attenuator • Bridged-T attenuator Ideal for RF signal-level control, impedance-matched pads and test setups. ANTENNA & PROPAGATION TOOLS Plan and evaluate RF and wireless systems with: • Antenna design utilities • Free-space path loss calculations • Friis transmission calculations • RF link budget calculator • Power density calculator • Radar maximum-range calculator COMPONENT DESIGN & REFERENCE Useful electronics tools are also included for RF design and prototyping: • Air-core inductor design • Spiral inductor design • Multi-layer air-core inductor calculations • SMD resistor code • Resistor color code • Resistors in series and parallel • SMD capacitor code • Capacitors in series and parallel BUILT FOR PRACTICAL RF WORK RF Calculator & Smith Chart is designed for quick engineering workflows. Select a tool, enter your parameters and get the values you need without working through repetitive equations manually. Use it for: • RF circuit design • Impedance matching • Antenna projects • Wireless link planning • Filter design • RF testing and troubleshooting • Electronics laboratories • Engineering study and coursework • Amateur radio and RF experimentation Whether you're checking VSWR, designing an impedance-matching network, calculating a link budget or experimenting with RF filters, RF Calculator & Smith Chart keeps essential RF engineering tools within easy reach.

Screenshots

dB Calculations4 screens
RF calculator & Smith Chart4 screens

Verdict

The call

The clearest difference is price: RF calculator & Smith Chart at Free against dB Calculations's $1.99. dB Calculations's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 15.0). On 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

CostPrice · In-app purchases · Ads · Monetization

RF calculator & Smith Chart is free to download; dB Calculations costs $1.99 up front. RF calculator & Smith Chart sells 1 one-off in-app purchase. dB Calculations asks for nothing beyond the download.

Scorecard3 real differences · 6 level
dB Calculations versus RF calculator & Smith Chart: the parameters behind the verdict, then further details
ParameterdB CalculationsRF calculator & Smith Chart
Price$1.99Free — better
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequency—Every 4 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size27 MB31 MB
Age rating+44+
DeveloperGorasiya Vishal NanjibhaiAnas Abubakar

In-app purchases

None

dB Calculations

No in-app purchases

1 purchases

RF calculator & Smith Chart

One-time1
  • upgrade to pro$3.99

Questions

Is dB Calculations free?
dB Calculations costs $1.99, with no in-app purchases.
Is RF calculator & Smith Chart free?
RF calculator & Smith Chart is free to download, with in-app purchases available.
Do dB Calculations or RF calculator & Smith Chart have ads?
Neither dB Calculations nor RF calculator & Smith Chart shows ads.

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