# Safeguard Cartridge Selector

> Safeguard Cartridge Selector (iPhone/iPad app by Micro-Trak Systems, Inc..)

- Source: https://appshunter.io/ios/app/safeguard-cartridge-selector/id1447564131 (this page in markdown: same URL + `.md`)
- Developer: [Micro-Trak Systems, Inc.](https://appshunter.io/developer/1447564130)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 16.0 · 4 MB
- Languages: American English
- Released: 2019-01-17
- Data updated: 2026-06-01
- User reviews in markdown: https://appshunter.io/ios/app/safeguard-cartridge-selector/id1447564131/reviews.md

## What is Safeguard Cartridge Selector?

With input of speed, rate, sensor spacing, and liquid density - calculates flow rate per sensor and selects appropriate cartridge for use in Micro-Trak Safeguard Blockage Sensor.  Operates in English or Metric units.  Selects cartridges for standard liquids or fumigants.  Adjustable for level of blockage to trigger alarm.


## Version history (last 5 releases)

### 5.3 — 2026-03-13

Remade the UI, Added button linking to the Micro-Trak website

### 5.2 — 2024-10-08

fixed a bug where after filling in the last field the app would show a cartridge that was incorrect.
improved icon sizing and overall app layout.

### 5.1 — 2024-10-03

Fixed error with some users that caused their on screen keypad to not go away after typing
Fixed error where after inputting values for speed rate, spacing and density the app would show a incorrect image (followed by the correct one after hitting the get cartridge button)

### 5 — 2024-07-25

. Updated to work on iOS 17
. Minor UI changes and improvements

### 4 — 2019-02-12

Modified font size and alignment in text fields. Limited orientation options to portrait. Modified page/panel layouts for management of iPhoneX safe area. Widened segmented control for Liquid type to hold more text.

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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 2026-06-01.*