# IAS-MACH　ALT Converter

> IAS-MACH　ALT Converter (iPhone/iPad app by Hiroyuki Nishijima.)

- Source: https://appshunter.io/ios/app/ias-mach-alt-converter/id6755030231 (this page in markdown: same URL + `.md`)
- Developer: [Hiroyuki Nishijima](https://appshunter.io/developer/1389796249)
- Category: Utilities, Education
- Price: Free
- Age rating: 4+
- Requires: iOS 18.6 · 4 MB
- Languages: American English
- Released: 2025-11-10
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/ias-mach-alt-converter/id6755030231/reviews.md

## What is IAS?

IAS, MACHがAltitudeの変化とともにどのようになるかを示すシミュレーターです。
IASもしくはMACHをスライダーで最終的に決めた速度を維持したまま高度を変化させると、もう一方の速度は高度変化に伴い変化します。
IAS, TAS, ALTおよびTASについては厳密な方程式に準拠しているわけではありませんので、数ktの誤差は生じますが、概略の変化傾向を学ぶには問題のない範囲と捉えています。


## Version history (last 2 releases)

### 1.1 — 2025-11-15

対応OSバージョンの拡大

### 1.0 — 2025-11-10

No release notes.

## More apps by Hiroyuki Nishijima

- [Time Calc.](https://appshunter.io/ios/app/time-calc/id1389796250)
- [X-Wind Tail-Wind](https://appshunter.io/ios/app/x-wind-tail-wind/id1406014326)
- [Runway Designation Numbers](https://appshunter.io/ios/app/runway-designation-numbers/id1422490904)
- [和暦変換](https://appshunter.io/ios/app/id1453666818)
- [Time Calc. Pro](https://appshunter.io/ios/app/time-calc-pro/id1509605480)
- [Minimum Circle](https://appshunter.io/ios/app/minimum-circle/id1510203613)

All apps by Hiroyuki Nishijima: https://appshunter.io/developer/1389796249

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-17.*