Comparison

TimeCalcX vs Rail Model Calc

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

Head to head
About

TimeCalcX

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このアプリは、「年、月、日、時間、分、秒」のいずかの入力に対して、対応する「年、月、日、時間、分、秒」を一括計算し、一括表示する時間計算専用電卓です。 電気回路や機械を扱っていると、「この部品の寿命は、平均60,000時間です」などと説明されますが、「60,000時間って、何日?、何年?」となることがあります。この時間計算用電卓を使うと、一発で「年、月、日、時間、分、秒」に変換表示されるので便利です。(60,000時間は、2500日、6.85年です) 入力した2つの日時の差分を計算する機能を追加しました。業務時間の計算の際などに利用できます。 表示する「年、月、日、時間、分、秒」は、小数点以下2桁までです。 入力する「年、月、日、時間、分、秒」は、この限りではありません。 尚、起動時直後は、1年に対する「年、月、日、時間、分、秒」が表示されています。 また、1ヶ月は30.41666667日、1年は365日として計算しており、うるう年は加味していませんので、その点はご考慮ください。 誤って、ソフトキーボード を立ち上げてしまった場合は、「Enterキー」又は、「改行キー」を押してください。

About

Rail Model Calc

Features
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Overview This is a calculator app that includes calculation functions necessary when playing with railroad model. How to use After launching the app,the first screen that appears is the Home screen, which also serves as a menu. Swipe and tap the menu on the Home screen to transition to various calculation modes. You can use various calculation modes to perform calculations necessary for railway model track length and railway model production. This App offer the following calculation modes. •Home mode Home is available simple calculations. Set F1-F10 memory on this screen. •Normal mode It is a normal calculator. •Straight mode This mode calculates horizontal and vertical lengths when laying a straight rail diagonally. •Curve mode This mode calculates the vertical, horizontal, and diagonal lengths when laying a curve rail. •S-Curve mode This mode calculates the vertical, horizontal, and diagonal lengths when laying a s-curve rail. •Scale X/Y mode This mode calculates the scale. •Inch to MM mode This mode converts yards and inches to millimeters. For details on how to use it, there is a manual on "?" button. 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.

Screenshots

TimeCalcX4 screens
Rail Model Calc4 screens

Verdict

The call

The clearest difference is update cadence: TimeCalcX at every 6 months against Rail Model Calc's every 14 months. On price, ads, 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

TimeCalcX ships an update every 6 months, Rail Model Calc every 14 months. The most recent releases landed on October 27, 2026 and October 1, 2026 respectively.

Scorecard1 real difference · 5 level
TimeCalcX versus Rail Model Calc: the parameters behind the verdict, then further details
ParameterTimeCalcXRail Model Calc
PriceFreeFree
Update frequencyEvery 6 months — betterEvery 14 months
AdsYesYes
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.0 — better15.4
Further details — not scored
Size6 MB13 MB
Age rating17+4+
Developerkoji kamogawaNobuyuki Kumakura

In-app purchases

None

TimeCalcX

No in-app purchases

None

Rail Model Calc

No in-app purchases

Questions

Is TimeCalcX free?
TimeCalcX is free to download, with no in-app purchases.
Is Rail Model Calc free?
Rail Model Calc is free to download, with no in-app purchases.
Do TimeCalcX or Rail Model Calc have ads?
Both TimeCalcX and Rail Model Calc show ads.
Which is updated more often, TimeCalcX or Rail Model Calc?
TimeCalcX ships an update every 6 months, and Rail Model Calc every 14 months. Most recently, TimeCalcX was updated on October 27, 2026 and Rail Model Calc on October 1, 2026.

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