Comparison

My Visonic SMS vs Engineer's Unit Converter

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

Head to head
About

My Visonic SMS

Remotely manage your Tyco/Johnsons alarm systems via SMS. Arm, disarm, check status, and receive instant notifications for alarms and alerts from anywhere in the world. Supports multiple panels and partitions with password protection.

Highlights
  • Remote alarm system control via SMS
  • Arm/disarm system
  • Check system status
  • Receive in-app notifications
  • Control individual partitions
  • Password protected access
Features
Read full description

Control and monitor your PowerMax/PowerG Tyco/Johnsons alarm systems from anywhere using SMS. With this App you can access your PowerMax panels from home or work or from anywhere in the world using your mobile phone. With this App you can: - Arm the system in home or away mode - Disarm the system - Check the current status of the system - Receive in-App messages (local push notifications) of alarms and alerts - Shows the live alarm status in case of an alarm/Arm Home/Arm Away/Disarm. - Rings the default ring tone of your mobile in case of alarms and critical alerts - Control individual partitions (up to 4) if the panel has been configured. - Control up to 2 panels with or without partitions. - Password protected with the same code that you use to disarm the alarm panel. Pre-requisite: To access the PowerMax/PowerG alarm system from outside the premises using SMS, your security service installer should have installed a GSM module inside the alarm panel and the GSM SIM card should have sufficient subscription/balance to send and receive SMSs. To download β€œMy Visonic” User Manual Click here: http://visonic.in/wp-content/uploads/2016/04/My-Visonic-SMS-User-Guide.pdf

About

Engineer's Unit Converter

Features
Read full description

A unit converter built for engineering work rather than for the kitchen. Thirty-two categories, from the everyday ones to the specialist tables you normally go looking for in a handbook: AWG wire gauge, tons of refrigeration, viscosity, water hardness, radiation dose, moment of inertia. EVERY CATEGORY, ALL FREE Length, Area, Pressure/Stress, Mass/Weight, Energy/Work, Power, Force, Torque, Volume, Temperature, Time, Speed, Angle, Data, Frequency, Fuel Economy, Density, Flow, Viscosity, Acceleration, Electric Current, Voltage, Resistance, Electric Charge, Magnetic Flux Density, HVAC Cooling, Water Hardness, Radiation Activity, Radiation Dose, Radiation Equivalent Dose, Moment of Inertia, Wire Gauge. No unlocks, no ad to watch first, no timer. Every category above is open the moment you install. ENGINEERING TOOLS An expression calculator that accepts arithmetic, fractions and scientific notation, so you can type 3/8 or 1.2e-3 straight into the field. An HVAC sizing helper that turns tons of refrigeration into BTU/h, kW and rule-of-thumb airflow. Reference tables for physical constants, thermocouple types and hardness scales. BUILT FOR THE JOB Works fully offline, so it does not care about signal on site. Reads decimal commas and points the way your region writes them. Pin the units you use, hide the ones you never touch, and reorder the rest. Add your own units with a conversion factor. Every conversion is kept in a searchable history you can tap to reuse. No account, no sign-in, no data leaves the device.

Screenshots

My Visonic SMS4 screens
Engineer's Unit Converter4 screens

Verdict

The call

The clearest difference is price: Engineer's Unit Converter at Free against My Visonic SMS's $0.99. Engineer's Unit Converter also leads on update cadence (monthly vs every 4 months). My Visonic SMS's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Engineer's Unit Converter is free to download; My Visonic SMS costs $0.99 up front. Engineer's Unit Converter sells 1 one-off in-app purchase. My Visonic SMS asks for nothing beyond the download.

UpkeepUpdate frequency

My Visonic SMS ships an update every 4 months, Engineer's Unit Converter monthly. The most recent releases landed on October 8, 2026 and October 26, 2026 respectively.

Scorecard5 real differences Β· 3 level
My Visonic SMS versus Engineer's Unit Converter: the parameters behind the verdict, then further details
ParameterMy Visonic SMSEngineer's Unit Converter
Price$0.99Free β€” better
Positive reviews0.0% of reviewsβ€”
Update frequencyEvery 4 monthsMonthly β€” better
AdsNo β€” betterYes
In-app purchasesNo β€” betterYes
MonetizationPaidβ€”
DevicesiPhone, iPodiPhone, iPad
Requires iOS9.2 β€” better18.0
Further details β€” not scored
Size2 MB7 MB
Age rating4+4+
DeveloperNeelu JaloriJose Gerardo Palma Duran

In-app purchases

None

My Visonic SMS

No in-app purchases

1 purchases

Engineer's Unit Converter

One-time1
  • Remove Ads$0.99

Questions

Is My Visonic SMS free?
My Visonic SMS costs $0.99, with no in-app purchases.
Is Engineer's Unit Converter free?
Engineer's Unit Converter is free to download, with in-app purchases available.
Do My Visonic SMS or Engineer's Unit Converter have ads?
Engineer's Unit Converter shows ads; My Visonic SMS does not.
Which is updated more often, My Visonic SMS or Engineer's Unit Converter?
My Visonic SMS ships an update every 4 months, and Engineer's Unit Converter monthly. Most recently, My Visonic SMS was updated on October 8, 2026 and Engineer's Unit Converter on October 26, 2026.

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