Comparison

Rail Model Track Calc vs Trainventory

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

Trainventory

Organize, track the value of, and create wishlists for your model train collection. Get reminders for new releases and manage your hobby efficiently.

Highlights
  • Organize train collection
  • Track costs and value
  • Create wishlists
  • Wishlist reminders
  • User-friendly design
Read full description

Trainventory: Organize, Track, and Dream Big with Your Model Train Collection Whether you're a lifelong model train enthusiast or just starting your collection, Trainventory is the essential app to keep everything on track. Effortlessly organize your trains, track their value, and build your dream wishlist – all in one place. Key Features: - Organize Your Collection: Easily catalog your locomotives, carriages, and accessories with detailed entries for model type, brand, and condition. - Track Costs and Value: Keep an eye on how much you’ve invested and monitor the value of your collection over time. - Create Your Wishlist: Never forget that must-have model again – build a wishlist of trains you’re dreaming of adding to your collection. - Get Reminded: Never miss out on a presale or release date with wish list reminders Why Trainventory? • User-friendly design built specifically for model train enthusiasts. • Keep your collection organized anytime, anywhere. • Perfect for collectors of all experience levels. All aboard for the most efficient way to manage your model train hobby. Download Trainventory today and let your collection shine! Start tracking, start organizing, and keep your model train passion on the right track with Trainventory.

Screenshots

Rail Model Track Calc4 screens
Trainventory4 screens

Verdict

The call

The clearest difference is review sentiment: Trainventory at 100% against Rail Model Track Calc's 0%. Trainventory also leads on rating (4.6 vs 1.0) and ads (none vs shown). Rail Model Track Calc's advantage is iOS requirement (15.4 vs 18.6). On price, 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.

ReceptionRating · Positive reviews · Number of ratings

Trainventory holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Trainventory has 27 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Rail Model Track Calc's written reviews are positive against 100% of Trainventory's.

UpkeepUpdate frequency

Rail Model Track Calc ships an update every 18 months, Trainventory every 3 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

Scorecard7 real differences · 3 level
Rail Model Track Calc versus Trainventory: the parameters behind the verdict, then further details
ParameterRail Model Track CalcTrainventory
PriceFreeFree
Rating1.0 (2 ratings)4.6 (27 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings227 — better
Update frequencyEvery 18 monthsEvery 3 months — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.4 — better18.6
Further details — not scored
Size9 MB30 MB
Age rating4+4+
DeveloperNobuyuki KumakuraNicholas Eby

Customer experience

Rail Model Track Calc

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Trainventory

All ratings22 ratings
Positive95.5%
Neutral0.0%
Negative4.5%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Rail Model Track Calc

No in-app purchases

None

Trainventory

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 Trainventory free?
Trainventory is free to download, with no in-app purchases.
Which has better reviews, Rail Model Track Calc or Trainventory?
Trainventory is rated higher. Rail Model Track Calc averages 1.0 out of 5 from 2 ratings, while Trainventory averages 4.6 from 27 ratings.
Do Rail Model Track Calc or Trainventory have ads?
Rail Model Track Calc shows ads; Trainventory does not.
Which is updated more often, Rail Model Track Calc or Trainventory?
Rail Model Track Calc ships an update every 18 months, and Trainventory every 3 months. Most recently, Rail Model Track Calc was updated on October 24, 2026 and Trainventory on October 27, 2026.

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