Comparison

GEYER Y 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

GEYER Y

Features
Read full description

The simulation app newly launched and further developed by GEYER Electronic supports you with just a few clicks when creating your design and existing circuits can be checked or optimized. Therefore it will help you to choose the right quartz crystal. What does the Y-Design app offer? - Simple design of initial circuit designs - Testing and optimization of designs by simple parameter input; fast determination of quartz loading - Avoidance of technical problems in advance, e.g. long start-up times - Intuitive app use → self-explanatory and user-friendly menu navigation - Storage and printing of the design parameters - Direct sample request for design review

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

GEYER Y4 screens
RF calculator & Smith Chart4 screens

Verdict

The call

The clearest difference is in-app purchases: GEYER Y at none against RF calculator & Smith Chart's 1. GEYER Y also leads on iOS requirement (12.0 vs 15.0). On price, update cadence, 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

Both are free to download. RF calculator & Smith Chart sells 1 one-off in-app purchase. GEYER Y asks for nothing beyond the download.

UpkeepUpdate frequency

GEYER Y ships an update every 5 months, RF calculator & Smith Chart every 4 months. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

Scorecard2 real differences · 4 level
GEYER Y versus RF calculator & Smith Chart: the parameters behind the verdict, then further details
ParameterGEYER YRF calculator & Smith Chart
PriceFreeFree
Update frequencyEvery 5 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size33 MB31 MB
Age rating4+4+
DeveloperGeyer Electronic GmbHAnas Abubakar

In-app purchases

None

GEYER Y

No in-app purchases

1 purchases

RF calculator & Smith Chart

One-time1
  • upgrade to pro$3.99

Questions

Is GEYER Y free?
GEYER Y is free to download, 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 GEYER Y or RF calculator & Smith Chart have ads?
Neither GEYER Y nor RF calculator & Smith Chart shows ads.
Which is updated more often, GEYER Y or RF calculator & Smith Chart?
GEYER Y ships an update every 5 months, and RF calculator & Smith Chart every 4 months. Most recently, GEYER Y was updated on October 7, 2026 and RF calculator & Smith Chart on October 13, 2026.

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