Comparison

Simubus vs PLC IO Checkout

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Simubus

This app provides a safe and practical virtual environment for learning and practicing electrical wiring and circuit design. It offers realistic simulations of industrial and residential circuits, a comprehensive component library, and diagnostic tools to help users master electrical principles and prepare for exams.

Highlights
  • Industrial & Home Circuit Simulation
  • Safe Low-Voltage Exercises
  • Step-by-Step Wiring Guidance
  • Comprehensive Component Library
  • Electrical Encyclopedia & Symbol Reference
  • Circuit Analysis & Diagnostics
Features
Read full description

Master Electrical Wiring Anytime, Anywhere! Safe, Practical, and Efficient. Simubus is a professional electrical wiring simulator designed for electricians, apprentices, students, and electrical professionals. Practice wiring, simulate circuits, and learn electrical principles without any risk. Whether you’re preparing for exams, learning industrial circuits, or exploring residential wiring, Simubus provides a virtual lab to improve skills, save time, and boost exam success rates. Why Choose Simubus? Traditional hands-on practice can be costly, dangerous, and time-consuming. Simubus brings you a safe, convenient, and realistic virtual environment to learn electrical wiring and circuit design. Key Benefits: - Industrial & Home Circuit Simulation — Build and practice residential, industrial, and control circuits without physical tools. - Safe Low-Voltage Exercises — Simulate live wires, voltage, current, and motors without hazards. - Step-by-Step Wiring Guidance — Learn wiring techniques, component functions, and connection principles. - Comprehensive Component Library — Switches, relays, contactors, timers, motors, sensors, transformers, and more. - Electrical Encyclopedia & Symbol Reference — Understand NO/NC contacts, coils, interlocks, latching circuits, and other components. - Circuit Analysis & Diagnostics — Check voltage, current, load, perform fault detection, and optimize circuit design. Who Can Benefit? - Electricians preparing for certification exams (journeyman or master level). - Apprentices or students studying electrical engineering. - Professionals learning industrial control panels or residential wiring. - Anyone wanting to practice wiring, design circuits, and learn electrical safety. Practice Opportunities: - Residential lighting, control circuits, and industrial power systems. - AC motors, three-phase motors, starters, relays, and timer relays. - Fault analysis, voltage & current calculations, and troubleshooting. - Automation and PLC circuit simulations. Core Features: - Electrical Circuit Simulator & Wiring Practice — Realistic simulation of components and circuits. - Industrial Wiring & Control Panel Simulation — Practice contactors, relays, and interlocking circuits. - Circuit Learning & Interactive Quizzes — Test your knowledge and improve practical skills. - Virtual Electrical Lab — Observe current, voltage, and power flow safely. - Component Encyclopedia — Learn all common electrical devices and symbols. - Circuit Analysis & Diagnostics — Detect faults, calculate loads, and optimize circuits. - Automation & Control Simulation — Explore PLCs, timers, and automated control systems. Learning Advantages: - Practice wiring safely without physical equipment, saving time and money. - Gain deep understanding of electricity, circuit safety, and industrial practices. - Prepare for exams or improve practical skills for residential and industrial applications. Supported Components: - Switches & Protection Devices: Switch, Socket, Fuse, MCB, MCCB, RCD, SPD. - Control & Automation Components: Contactor, Relay, Intermediate Relay, Timer Relay, Thermal Overload Relay, SSR. - Input & Signaling Devices: Push Button, Selector Switch, Indicator Lamp, Pilot Lamp, Limit Switch, Proximity Sensor, Float Switch, Solenoid Valve. - Motors & Power Devices: AC Motor, Three-Phase Motor, Motor Starter, Switching Power Supply, Control Transformer, Current Transformer, Energy Meter. ----【Subscription Information】---- Monthly Membership (Auto-Renewable) - Price: As shown in In-App Purchase - Payment: Charged to iTunes account upon purchase - Cancel: Turn off auto-renewal at least 24 hours before renewal in iTunes/Apple ID Settings - Renewal: iTunes account charged within 24 hours before period ends, extending subscription by one period Privacy Policy: https://simubus.com/privacy.html Terms of Use: https://simubus.com/terms.html Auto-Renewal Agreement: https://simubus.com/bill.html

About

PLC IO Checkout

Features
Read full description

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 — 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 — 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: • Cover sheet with client, site, machine, inspector and summary statistics • Full point-by-point table with status, timestamps, initials and notes • Punch list section with resolutions • Photo appendix • 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 — 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

Simubus4 screens
PLC IO Checkout4 screens

Verdict

The call

The clearest difference is iOS requirement: Simubus at 15.0 against PLC IO Checkout's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Simubus sells 3 in-app purchases, starting at $12.90 per month and PLC IO Checkout sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 8 level
Simubus versus PLC IO Checkout: the parameters behind the verdict, then further details
ParameterSimubusPLC IO Checkout
PriceFreeFree
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 weeks—
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size60 MB2 MB
Age rating17+4+
DeveloperChongqing Shengniu Technology Co., LtdBCDPRODUCTION LLC

In-app purchases

3 purchases

Simubus

Subscriptions2
  • Monthly Pro Subscription$12.901 Month
  • Yearly Pro Subscription$69.991 Year
One-time1
  • Lifetime$79.99
1 purchases

PLC IO Checkout

One-time1
  • Lifetime Unlock$29.99

Questions

Is Simubus free?
Simubus is free to download, with in-app purchases available.
Is PLC IO Checkout free?
PLC IO Checkout is free to download, with in-app purchases available.
Do Simubus or PLC IO Checkout have ads?
Neither Simubus nor PLC IO Checkout shows ads.

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