Comparison

Rail Model Track Calc vs convrt

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

Head to head
About

Rail Model Track Calc

Easily calculate horizontal and vertical dimensions for diagonal railroad model track layouts. Input track length and angle to get precise measurements for combining different track pieces. Avoid guesswork and ensure accurate model railway construction.

Highlights
  • Calculate horizontal and vertical track lengths
  • Input track length and angle
  • Precise measurements in 0.5 mm increments
  • Error margin less than 0.5mm
  • Reset function for calculations
  • Designed for railroad modeling hobbyists
Features
Read full description

Overview This is an application that can calculate the horizontal and vertical lengths when laying out the railroad model tracks diagonally. For example, when a straight track is laid out after laying a curved track(e.g. 45° angle). Or straight tracks after laying out railroad points (e.g. 15°) etc. If you lay out the track diagonally like this, It is necessary to know the horizontal and vertical dimensions in order to combine other tracks to create a layout. But, it is troublesome to calculate the size. There is also need to rely on intuition. So please, use this application. This application you can easily calculate the dimensions of the track. How to use 1. Enter a millimeter number for the track length. 2. Select an angle. 3. The Horizontal, Difference, and Vertical, which are the calculation results, are displayed. Decimal point can be used. Calculation result As the calculation result, the horizontal length (angle 0°), horizontal difference, and vertical length are displayed in units of 0.5 mm. The error of the calculation result is less than 0.5mm Reset button The numbers and angles are reset. Disclaimer This calculator is for the railroad modeling hobby. The calculation results is the numerical value which be calculated by the developer. It may be different from the numerical value by model manufacturer. In particular, commercially available railroad model rails allow for dimensional errors. Therefore, the calculation results do not necessarily represent what the track layout cannot or can be done. This application is subject to change without notice. The developer assumes no responsibility for any loss or claims by third parties which may arise from the use of this application.

About

convrt

Features
Read full description

After selecting a category and an associated unit an input value has to be provided. Once input has been provided and the “Convert" button has been clicked, the keyboard will be dismissed, and the conversion results will be listed in a table underneath the input field. The selected category and unit will appear as the button title. Checks will be executed the validate the input provided. An error message will be displayed if invalid input is entered. All categories can deal with decimal input including decimal places. Exceptions are the categories 'Numeral' and 'Data'. These categories don't allow decimal places. For the 'Numeral' category input depends on the selected unit; binary only allows 0 and 1, octal only allows for 0..7, decimal only allows for 0..9 and hexadecimal allows for 0..9 and A..F. The categories Circle, Data and Temperature have an option “Table" in the Unit list. When selected the app will list formulas used to execute the conversions (for Circle and Temperature) and a table with all data storage units and how they relate to each other (for Data). Tables will be listed without the need to provide Input or pressing the Convert button. More detailed Help information is provided on the Help screen in the app. In settings you can set number of decimal places for each of the category's unit conversion results and if you want to use grouping separators. Also you have the option to change the color of the buttons on the main screen.

Screenshots

Rail Model Track Calc4 screens
convrt1 screens

Verdict

The call

The clearest difference is ads: convrt at none against Rail Model Track Calc's shown. On price, update cadence, 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Rail Model Track Calc ships an update every 18 months, convrt every 25 months. The most recent releases landed on October 6, 2026 and October 2, 2026 respectively.

Scorecard1 real difference · 9 level
Rail Model Track Calc versus convrt: the parameters behind the verdict, then further details
ParameterRail Model Track Calcconvrt
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 18 months — betterEvery 25 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.4 — better15.6
Further details — not scored
Size9 MB3 MB
Age rating4+4+
DeveloperNobuyuki KumakuraHerbert Jonkman

In-app purchases

None

Rail Model Track Calc

No in-app purchases

None

convrt

No in-app purchases

Questions

Is Rail Model Track Calc free?
Rail Model Track Calc is free to download, with no in-app purchases.
Is convrt free?
convrt is free to download, with no in-app purchases.
Do Rail Model Track Calc or convrt have ads?
Rail Model Track Calc shows ads; convrt does not.
Which is updated more often, Rail Model Track Calc or convrt?
Rail Model Track Calc ships an update every 18 months, and convrt every 25 months. Most recently, Rail Model Track Calc was updated on October 6, 2026 and convrt on October 2, 2026.

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