Comparison

Field Triangulate 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

Field Triangulate

Determine a remote GPS location using compass bearings from multiple points. Supports automated device location and manual entry of readings. Displays results on a map in various modes and offers multiple latitude/longitude formats.

Highlights
  • Calculate remote GPS locations
  • Use compass bearings
  • Automated iOS device location
  • Manual reading entry
  • On-map display
  • Multiple latitude/longitude formats
  • Share triangulation results
Features
Read full description

Quickly and easily determine a remote GPS location from two, or more, geolocated points with compass bearings to that location. Specifically designed for use in the field, Field Triangulate supports: - Fully automated use of iOS device location. Compass bearings are best manually entered. - Manual entry/edit of any/all readings. - On map display in various display modes. - Manually update device bearings (e.g. for use with a compass.) - Share the triangulation to others. - Multiple latitude/longitude formats: -- Decimal degrees -- Degrees and decimal minutes -- Degrees, minutes and seconds. -- (Display for UTM.) Basic usage: Use your iOS device & compass to take bearing on a remote location from two locations and Field Triangulate will calculate and display the GPS coordinate for the remote location. Advanced usage: Enter readings provided from a remote person (perhaps by iPhone or radio) and add your own readings manually in order to calculate a remote location.

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

Field Triangulate4 screens
RF calculator & Smith Chart4 screens

Verdict

The call

The clearest difference is price: RF calculator & Smith Chart at Free against Field Triangulate's $7.99. Field Triangulate's advantage is in-app purchases (none vs 1) and update cadence (every 2 months vs every 4 months). 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; Field Triangulate costs $7.99 up front. RF calculator & Smith Chart sells 1 one-off in-app purchase. Field Triangulate asks for nothing beyond the download.

UpkeepUpdate frequency

Field Triangulate ships an update every 2 months, RF calculator & Smith Chart every 4 months. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.

Scorecard4 real differences · 6 level
Field Triangulate versus RF calculator & Smith Chart: the parameters behind the verdict, then further details
ParameterField TriangulateRF calculator & Smith Chart
Price$7.99Free — better
Rating3.7 (21 ratings) — better—
Positive reviews40.0% of reviews—
Number of ratings21 — better—
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.4 — better15.0
Further details — not scored
Size37 MB31 MB
Age rating4+4+
DeveloperNeukadyeAnas Abubakar

In-app purchases

None

Field Triangulate

No in-app purchases

1 purchases

RF calculator & Smith Chart

One-time1
  • upgrade to pro$3.99

Questions

Is Field Triangulate free?
Field Triangulate costs $7.99, 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 Field Triangulate or RF calculator & Smith Chart have ads?
Neither Field Triangulate nor RF calculator & Smith Chart shows ads.
Which is updated more often, Field Triangulate or RF calculator & Smith Chart?
Field Triangulate ships an update every 2 months, and RF calculator & Smith Chart every 4 months. Most recently, Field Triangulate was updated on October 23, 2026 and RF calculator & Smith Chart on October 22, 2026.

Other comparisons