Comparison

OptiTools Mobile vs SLD | Electrical diagrams

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

Head to head
About

OptiTools Mobile

Configure and monitor Optidrive products wirelessly via Bluetooth. Transfer parameter sets, view real-time drive status, motor speed, current, and power. Adjust motor speed, start/stop drives, and reset trips when unlocked.

Highlights
  • Wireless configuration via Bluetooth BLE
  • Real-time parameter monitoring and editing
  • Transfer parameter sets between drive and smartphone
  • Monitor drive status, motor speed, current, and power
  • Adjust motor speed, start/stop drives, reset trips
Features
Read full description

OptiTools Mobile is an intuitive and easy-to-use Smartphone App which provides wireless configuration and monitoring of the Optidrive product range. Wireless operation is carried out via Bluetooth BLE and is available on any Optidrive when the OptiStickSmart is plugged into a drive or a drive network. PARAMETER TRANSFER Monitor and Edit individual Optidrive parameters in real-time or transfer complete parameter sets between an Optidrive and the Smartphone. Parameter sets can be send and received via Email and are fully compatible with OptiTools Studio PC software. OPTIDRIVE MONITOR AND CONTROL Monitor drive status, motor speed, motor current and motor power in real-time. When unlocked, the user can adjust motor speed, start the drive, stop the drive and reset trips from the Smartphone App.

About

SLD | Electrical diagrams

Easily create single-line electrical diagrams with a vast library of IEC and ANSI standard symbols. Drag and drop components to build your schemes, with options to save and edit in the PRO version.

Highlights
  • Create single-line diagrams
  • Drag and drop symbol placement
  • IEC and ANSI standard symbols
  • Save and edit schemes (PRO)
  • Export as image, PDF, or file
  • Add text labels (volt, watt, etc.)
Read full description

This tool will allow you to create your own one-line diagrams quickly and easily. Simply select the symbol you want to use and drag it to the desired position. The most commonly used symbols are integrated (IEC, ANSI standards): Symbols according to IEC and ANSI standards for electrical engineering: Circuit breaker, plug-in, switch, disconnector, fuse, differential (RCD), contactor, motor, generator, socket, plug base, contact, normally open NO, closed NC, valve, level, temperature, delay and advance opening and closing, limit switch, handle, interlock, push button, mushroom, lamp, grounding, energy meter, active (kWh) wattmeter, reactive (kvar) varimeter, transformer, voltage, current, three windings, overvoltage, thermal relay, magnetic, coil, clock, minimum and maximum voltage, starter, rectifier, inverter, battery, converter, AC/DC, DC/DC, frequency meter, voltmeter, ammeter, ohmmeter, soft starter, variable resistance, reactance, diode, varistor, heater, fault, star-delta transformer, insulation, regulator, connectors, conductors, phase, neutral, ground, protection, fan, photovoltaic panel, control, load and enter text such as volt, ampere, watt, energy # BASIC Version # * You can create your single-line diagram with the same symbols as the Version PRO * You can only work with a scheme although you can share it as an image, pdf or file * Once you create a scheme you will no longer be able to open another (they are not saved) * Contains ads # PRO Version # (1 - In-App Purchases) * You will be able to open, edit and save a scheme * Open in the following examples (link) * No ads * Missing a symbol? Contact us through the app * More examples: https://drive.google.com/drive/folders/15vTwFvjtu311lSEbYJLaqUfp_pyEwEDt?usp=sharing

Screenshots

OptiTools Mobile4 screens
SLD | Electrical diagrams4 screens

Verdict

The call

The clearest difference is review sentiment: OptiTools Mobile at 100% against SLD | Electrical diagrams's 45%. OptiTools Mobile also leads on price (Free vs $1.99) and in-app purchases (none vs 1). SLD | Electrical diagrams's advantage is rating (4.1 vs 3.5) and update cadence (fortnightly vs every 4 months). On ads 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

OptiTools Mobile is free to download; SLD | Electrical diagrams costs $1.99 up front. SLD | Electrical diagrams sells 1 one-off in-app purchase. OptiTools Mobile asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SLD | Electrical diagrams holds the better App Store score, 4.1 against 3.5. That said, the two scores are not equally well evidenced: SLD | Electrical diagrams has 133 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 100% of OptiTools Mobile's written reviews are positive against 45% of SLD | Electrical diagrams's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

OptiTools Mobile ships an update every 4 months, SLD | Electrical diagrams fortnightly. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

Scorecard8 real differences · 2 level
OptiTools Mobile versus SLD | Electrical diagrams: the parameters behind the verdict, then further details
ParameterOptiTools MobileSLD | Electrical diagrams
PriceFree — better$1.99
Rating3.5 (2 ratings)4.1 (133 ratings) — better
Positive reviews100.0% of reviews — better45.5% of reviews
Number of ratings2133 — better
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.011.0 — better
Further details — not scored
Size139 MB13 MB
Age rating4+4+
DeveloperInvertek Drives LimitedAngel Martinez

Customer experience

OptiTools Mobile

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

SLD | Electrical diagrams

All ratings132 ratings
Positive79.5%
Neutral6.1%
Negative14.4%
Written reviews143 reviews
Positive45.5%
Neutral14.7%
Negative39.9%

Bugs and requests

OptiTools Mobile

Not enough reviews yet to summarise bugs or requests.

SLD | Electrical diagrams

Reported bugs

4 issues
  • Saved projects disappear or cannot be opened
  • Pro version not working as expected
  • Frequent crashes and app instability
  • Saving and loading issues

Requested features

6 requests
  • Add more electrical symbols and components
  • Improve text editing and positioning
  • Implement undo/redo functionality
  • Allow changing wire/conductor colors
  • Add support for exporting to DWG or DXF formats
Show 1 more
  • Provide a user manual or tutorial

In-app purchases

None

OptiTools Mobile

No in-app purchases

1 purchases

SLD | Electrical diagrams

One-time1
  • Remove ads, save diagram$3.99

Questions

Is OptiTools Mobile free?
OptiTools Mobile is free to download, with no in-app purchases.
Is SLD | Electrical diagrams free?
SLD | Electrical diagrams costs $1.99, and also offers in-app purchases.
Which has better reviews, OptiTools Mobile or SLD | Electrical diagrams?
SLD | Electrical diagrams is rated higher. OptiTools Mobile averages 3.5 out of 5 from 2 ratings, while SLD | Electrical diagrams averages 4.1 from 133 ratings.
Do OptiTools Mobile or SLD | Electrical diagrams have ads?
Neither OptiTools Mobile nor SLD | Electrical diagrams shows ads.
Which is updated more often, OptiTools Mobile or SLD | Electrical diagrams?
OptiTools Mobile ships an update every 4 months, and SLD | Electrical diagrams fortnightly. Most recently, OptiTools Mobile was updated on November 3, 2026 and SLD | Electrical diagrams on November 7, 2026.

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