# AlphaDelta

> Calculates stable isotope fractionation for H, C, O, and S using published equations. (iPhone/iPad app by Universite Laval.)

- Source: https://appshunter.io/ios/app/alphadelta/id421377528 (this page in markdown: same URL + `.md`)
- Developer: [Universite Laval](https://appshunter.io/developer/386592978)
- Category: Reference, Education
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 16.0 · 9 MB
- Languages: American English, Canadian French
- Released: 2011-02-24
- Data updated: 2026-06-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/alphadelta/id421377528/reviews.md

## What is AlphaDelta?

AlphaDelta is a tool to compute stable isotope fractionation based on published equations for H, C, O, and S. Two types of computations can be performed : 1) the 1000 ln α value between two molecules at a set temperature; 2) the temperature of isotope equilibrium for a difference in isotope composition (Δ) between two molecules.

## Key features

- Stable isotope fractionation computation
- Supports H, C, O, and S isotopes
- Calculates 1000 ln α value
- Determines isotope equilibrium temperature
- Based on published equations


## Frequently asked questions about AlphaDelta

### What isotopes can AlphaDelta compute fractionation for?

AlphaDelta can compute stable isotope fractionation for Hydrogen (H), Carbon (C), Oxygen (O), and Sulfur (S).

### What are the two types of computations AlphaDelta performs?

AlphaDelta performs two types of computations: calculating the 1000 ln α value between two molecules at a set temperature, and determining the temperature of isotope equilibrium for a difference in isotope composition (Δ) between two molecules.

### Is AlphaDelta available on multiple devices?

Yes, AlphaDelta is supported on Mac, iPhone, and iPad, allowing for flexible use across different Apple devices.

### How often is AlphaDelta updated?

The latest version of AlphaDelta was released on December 21, 2022, indicating it receives periodic updates to maintain functionality and accuracy.

### What is the age rating for AlphaDelta?

AlphaDelta has an age rating of 4+, making it suitable for a wide range of users, including younger students.

### Does AlphaDelta have ads?

No, AlphaDelta does not contain advertisements, providing an uninterrupted user experience.

### What is the user rating for AlphaDelta?

AlphaDelta has an excellent user rating of 5.0 stars based on 2 ratings, suggesting high user satisfaction.

### Who developed AlphaDelta?

AlphaDelta was developed by Universite Laval, a reputable institution known for its scientific research.

## Version history (last 5 releases)

### 2.1.2 — 2022-12-21

Fix 1000 ln alpha display problem

### 2.1.1 — 2022-06-22

Fix iPad logos.

### 2.1 — 2022-04-29

Fix bugs related to reference recovery.

### 2.0 — 2022-03-19

Rework the entire application. Add a macOS version.

### 1.4 — 2016-11-03

This app has been updated by Apple to display the Apple Watch app icon.

Fixes iOS 10 Crashes

## Apps similar to AlphaDelta

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Flora Helvetica](https://appshunter.io/ios/app/flora-helvetica/id6743125190) | — | Free | Reference |

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All apps by Universite Laval: https://appshunter.io/developer/386592978

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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 2026-06-05.*