Comparison

RST 599 Pro vs Bode Plot Calculator

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

Head to head
About

RST 599 Pro

This application simulates amateur radio CW QSOs with realistic call signs, signal levels, and speeds. It supports various QSO styles, pile-ups, and includes features like RIT, CW filters, and a spectrum scope for an immersive experience.

Highlights
  • Realistic CW QSO simulation
  • Pile-up reproduction (up to 5 stations)
  • Multiple QSO style support
  • RIT and CW filter functions
  • Spectrum scope display
  • Customizable call sign and CW speed
Features
Read full description

This app is a real CW QSO simulator for Amateur Radio. "599BK type QSO", "Rubber stamp type QSO" and "Contest type QSO" are supported. In addition, the call sign, signal level, CW speed, etc. that occur differ for each QSO in order to achieve realism. Furthermore, the call sign and CW speed of your own station that issues CQ can be set arbitrarily. 【Main features】 1. Reproduction of "pile-up" Called from up to 5 stations simultaneously. 2. "599BK","Rubber Stamp" and "AADX Contest" style support. 3.RIT and CW filter functions  Band Width(100-999Hz) control supported. 4.Landscape display support. 5.Realistic signal meter according to audio signal level. 6.Status display showing TX / RX operation. 7.The spectrum scope display 【Other features】 1. Select the number of QSOs to communicate. You can choose from 5,10,20,50,100. 2. Ability to select QRN. You can choose None, Weak, Norm, Hard. 3. Function to select Callsign Area. You can choose from JA's USA's or W / W. 4. Function to select SideTone. 5. Synchronized with CW BandPassFilter. 6. Judgement of "RST, QRA and QTH" or "RST, QRA and WX" information. 7.Supported the ESC button from the long TX/RX. 8.Supported the Score Clear button of Hi-Score. 9.Support the capture function of Hi-Score dialog. 10.Supported the QSB in the mode of "599BK / AADX" and "W/W" Supported keyboard input from Apple Silicon Mac. (Not compatible with iOS) [Support Key] A-Z, 0-9, / Enter:return ESC:esc BS:delete CQ:UpArrow AGN:DownArrow TU:[ LEFT:LeftArrow RIGHT:RightArrow

About

Bode Plot Calculator

This advanced calculator is designed for creating Bode plots and Nyquist diagrams. It also supports complex number calculations and time-domain graphing. Users can export plots and calculations for further analysis.

Highlights
  • Bode Plot generation
  • Nyquist Diagram visualization
  • Complex number calculations
  • Time-domain graphing
  • Export plots and calculations
  • Intuitive interface with themes
  • Sliders for real-time parameter changes
Features
Read full description

This is not a standard scientific calculator, it is optimized to evaluate Bode plots and Nyquist diagrams. This calculator is also fully compatible with the complex domain and standard graphs in time domain (linear). Writing a calculation produces the numeric result, as any calculator, while adding the variable t produces a plot in time domain. Inserting f, omega or s instead, produces the Bode Plot, then it is possible to switch to the Nyquist diagram. Functionalities: - Nice looking interface, intuitive, immediate and able to not only replace, but to enrich hardware calculators. - Elegant and modern themes and colors to choose from, all included in the first purchase. - A little magic feature: in scientific notation, swipe over the result to move the decimal dot and see the ten power change :) - All scientific function (sin, cos, tan, ..., log, ln, exp, ..., atan2). - Calculation structured in 2D, with fractions, powers, roots, brackets and so on, with very easy to nest operations, no limits! - Tap on the calculation to place the cursor and write. - Undo/Redo buttons - A catalog with 40 physics fundamentals constants, with name and unit of measure, ready to be inserted. - Possibility to store values. - Chronology. - Sliders: yes, you can insert many parameters and change them swiping on a slider to see the effect in real time. - Spaces: access to up to 4 spaces on which you can edit and keep calculations, useful also to superpose different plots. - Joystick mode: swipe over the buttons to move the cursor (still in beta). - Bode Plots: inserting a variable, s, omega or f, produces the Bode Plot, toggling on the button it switches to the Nyquist diagram. - Linear Plots: inserting the t variable, produces a plot in a linear domain. - Complex numbers: the app automatically uses complex numbers when needed, no need to set the complex mode. - Plots also support for complex values. - Integrals and derivatives (in the future also limits). - Export plot and calculation as image/PDF, copy result as text

Screenshots

RST 599 Pro4 screens
Bode Plot Calculator4 screens

Verdict

The call

The clearest difference is review sentiment: Bode Plot Calculator at 100% against RST 599 Pro's 50%. Bode Plot Calculator also leads on rating (5.0 vs 4.0) and price ($3.99 vs $4.99). RST 599 Pro's advantage is update cadence (every 2 months vs every 12 months) and ratings volume (3 vs 1). On ads, in-app purchases, monetization model 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

RST 599 Pro costs $4.99 and Bode Plot Calculator $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Bode Plot Calculator holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 50% of RST 599 Pro's written reviews are positive against 100% of Bode Plot Calculator's.

UpkeepUpdate frequency

RST 599 Pro ships an update every 2 months, Bode Plot Calculator every 12 months. The most recent releases landed on September 27, 2026 and September 21, 2026 respectively.

Scorecard6 real differences · 4 level
RST 599 Pro versus Bode Plot Calculator: the parameters behind the verdict, then further details
ParameterRST 599 ProBode Plot Calculator
Price$4.99$3.99 — better
Rating4.0 (3 ratings)5.0 (1 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings3 — better1
Update frequencyEvery 2 months — betterEvery 12 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better15
Further details — not scored
Size40 MB9 MB
Age rating4+4+
Developerkoji kamogawaEdoardo Orzes

Customer experience

RST 599 Pro

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bode Plot Calculator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

RST 599 Pro

No in-app purchases

None

Bode Plot Calculator

No in-app purchases

Questions

Is RST 599 Pro free?
RST 599 Pro costs $4.99, with no in-app purchases.
Is Bode Plot Calculator free?
Bode Plot Calculator costs $3.99, with no in-app purchases.
Which has better reviews, RST 599 Pro or Bode Plot Calculator?
Bode Plot Calculator is rated higher. RST 599 Pro averages 4.0 out of 5 from 3 ratings, while Bode Plot Calculator averages 5.0 from 1 ratings.
Do RST 599 Pro or Bode Plot Calculator have ads?
Neither RST 599 Pro nor Bode Plot Calculator shows ads.
Which is updated more often, RST 599 Pro or Bode Plot Calculator?
RST 599 Pro ships an update every 2 months, and Bode Plot Calculator every 12 months. Most recently, RST 599 Pro was updated on September 27, 2026 and Bode Plot Calculator on September 21, 2026.

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