Instrument Toolbox vs PLC IO Checkout
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Instrument Toolbox
A professional calculator designed for industrial control, automation, and instrumentation engineers. It offers quick conversions and calculations for gas concentration, units, steam properties, flange levels, and pipeline flow. Ideal for both field debugging and engineering design.
- PPM to mg/mยณ conversion with compensation
- Industrial unit conversion (pressure, volume, temp, etc.)
- Saturated steam pressure and density calculator
- Flange level migration calculations
- Pipeline flow and velocity calculator
- Real-time calculation results
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Industrial Control & Instrumentation Toolbox - Your Smart Industrial Calculator A professional calculation toolbox designed for industrial control, automation, and instrumentation engineers. Whether for field debugging or engineering design, it helps you quickly complete various professional calculations. Core Features: PPM to mg/mยณ Converter: Gas concentration unit conversion, supports custom molecular weight, built-in quick selection of common gas molecular weights, with environmental temperature and pressure compensation Unit Converter: Covers easy conversion of industrial measurement units including: Pressure (8 units including MPa, kPa, bar, psi, etc.) Volume Temperature Length Mass Saturated Steam Calculator: Input temperature to obtain saturated steam pressure, or input pressure to calculate saturated steam density, meeting steam system design requirements Flange Level Migration: Supports single/dual flange level calculations, with inputs for medium density, flange distance, and other parameters for precise level measurement calibration Pipeline Flow & Velocity Calculator: Applicable for both gas and liquid media, integrates velocity calculation, flow calculation, and diameter calculation, incorporating temperature, pressure, and other operating conditions Key Features: Clean and intuitive interface, easy operation Real-time calculation results Supports standard and operating condition conversions Built-in reference values like standard atmospheric pressure Suitable for both field engineering and design office scenarios This app is an essential professional tool for industrial automation, significantly improving engineering calculation efficiency. Target Users: Automation Engineers, Instrumentation Engineers, Process Engineers, Equipment Engineers, and other industrial control professionals.
PLC IO Checkout
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IO Checkout replaces the printed spreadsheet and highlighter you carry into a panel. Import your I/O list, verify every point, track the punch list, and hand your client a professional PDF report before you leave site. Built for solo integrators, controls engineers, commissioning technicians and small OEM machine builders who need the paperwork done properly without dragging a laptop into the field. Everything works offline. There is no account, no server and no sign-in. IMPORT YOUR I/O LIST Export a CSV from Excel and bring it straight in. A mapping screen lets you match your spreadsheet's columns to tag, description, I/O type, address, terminal, signal detail and engineering range, with a live preview before anything is created. Real I/O lists are messy, so the importer expects it: quoted fields with embedded commas, Windows line endings, stray encodings, blank rows and duplicate tags are all handled without losing data or crashing. You can also start an empty project and add points by hand. CHECK POINTS THE WAY YOU ACTUALLY WORK Mark each point Pass, Fail, Punch List or N/A. Every change is stamped with the time and your initials automatically, so the record builds itself while you work. Filter by status or I/O type, search by tag or description, and see progress broken down between passed, failed and punch at a glance. Rows are built for gloves and sunlight: large targets, high contrast, full dark mode support. RAPID MODE One point at a time, full screen. Swipe right to pass, left to fail, or use the oversized buttons โ then it advances straight to the next unchecked point. This is the mode for walking a panel with a meter in your other hand. Undo is always one tap away. PHOTO EVIDENCE Attach photos of terminations, nameplates or wiring faults directly to a point, from the camera or your library. They stay with the record and print in the report appendix. PUNCH LIST THAT KEEPS ITS HISTORY Failed and flagged points collect into a dedicated punch list. When an item is fixed, resolve it with a note โ the original failure, its date and its photos are all preserved. Your report shows both the problem and the fix, which is exactly what a client wants to see. CLIENT-READY PDF REPORT Generate a multi-page report carrying your own company logo: โข Cover sheet with client, site, machine, inspector and summary statistics โข Full point-by-point table with status, timestamps, initials and notes โข Punch list section with resolutions โข Photo appendix โข Signature block with your captured signature and a client witness line Share it by AirDrop, Mail or Files. Results also export to CSV for clients who want the data back in Excel. PRIVATE BY DESIGN Every project stays on your device. No account, no cloud, no analytics, no tracking, nothing transmitted anywhere. It works the same in a steel enclosure with no signal as it does at your desk. TRY IT FIRST New installs get a 5-day free trial with every feature unlocked. After that, a single 29.99 USD purchase unlocks the app permanently โ no subscription and nothing that renews. Projects you have already created remain on your device and fully editable whether or not you unlock. Not sure where to start? The app can generate a realistic 40-point sample project so you can walk the entire workflow, report included, without importing anything.
Screenshots
Verdict
The clearest difference is price: PLC IO Checkout at Free against Instrument Toolbox's $1.99. Instrument Toolbox's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 17.0). On ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
PLC IO Checkout is free to download; Instrument Toolbox costs $1.99 up front. PLC IO Checkout sells 1 one-off in-app purchase. Instrument Toolbox asks for nothing beyond the download.
| Parameter | Instrument Toolbox | PLC IO Checkout |
|---|---|---|
| Price | $1.99 | Free โ better |
| Positive reviews | 100.0% of reviews | โ |
| Update frequency | Weekly | โ |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Monetization | Paid | โ |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 13.0 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 8 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | ็ซๅจ ็ | BCDPRODUCTION LLC |
In-app purchases
Instrument Toolbox
No in-app purchases
PLC IO Checkout
- Lifetime Unlock$29.99
Questions
Is Instrument Toolbox free?
Is PLC IO Checkout free?
Do Instrument Toolbox or PLC IO Checkout have ads?
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