# Breakpoint Simulator — Chlorine and ammonia chemistry

> Chlorine and ammonia chemistry (iPhone/iPad app by HumbleMe, Inc..)

- Source: https://appshunter.io/ios/app/breakpoint-simulator/id1491638603 (this page in markdown: same URL + `.md`)
- Developer: [HumbleMe, Inc.](https://appshunter.io/developer/1373801045)
- Category: Education, Reference
- Price: Free
- Age rating: 4+
- Requires: iOS 9.0 · 45 MB
- Languages: English
- Released: 2019-12-26
- Data updated: 2025-06-13
- User reviews in markdown: https://appshunter.io/ios/app/breakpoint-simulator/id1491638603/reviews.md

## What is Breakpoint Simulator?

Breakpoint Simulator is a program for simulating the formation and decay of chloramines in water as well as the breakpoint curve resulting from the interaction of chlorine and ammonia.

Developed based on the EPA tools "Batch (Plug Flow) Reactor Simulation of Drinking Water Chloramine Formation and Decay" and "Chlorine Breakpoint Curve Simulator", Breakpoint Simulator will take a range of parameters including:

- Temperature
- pH
- Alkalinity
- Total organic carbon (TOC)
- Chlorine concentration (or feed rate) and 
- Ammonia concentration (or feed rate) 

Updated for iOS 14

To simulate the interaction and resultant speciation of chloramines. 

Results include values for free chlorine, total chlorine, mono-, di-, and trichloramine, as well as free ammonia over a specified time interval or over a fixed interval of Cl2:N mass ratios to develop a breakpoint curve.


## Version history (last 2 releases)

### 1.0.1 — 2020-09-30

Updated for iOS 14

### 1.0 — 2019-12-26

No release notes.

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## More apps by HumbleMe, Inc.

- [HumbleMe](https://appshunter.io/ios/app/humbleme/id1473670243)

All apps by HumbleMe, Inc.: https://appshunter.io/developer/1373801045

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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 2025-06-13.*