OptiTools Mobile vs SLD | Electrical diagrams
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- 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.)
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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
Verdict
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
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.
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.
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.
| Parameter | OptiTools Mobile | SLD | Electrical diagrams |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 3.5 (2 ratings) | 4.1 (133 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 45.5% of reviews |
| Number of ratings | 2 | 133 — better |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 139 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Invertek Drives Limited | Angel Martinez |
Customer experience
OptiTools Mobile
SLD | Electrical diagrams
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
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- Provide a user manual or tutorial
In-app purchases
OptiTools Mobile
No in-app purchases
SLD | Electrical diagrams
- Remove ads, save diagram$3.99
Questions
Is OptiTools Mobile free?
Is SLD | Electrical diagrams free?
Which has better reviews, OptiTools Mobile or SLD | Electrical diagrams?
Do OptiTools Mobile or SLD | Electrical diagrams have ads?
Which is updated more often, OptiTools Mobile or SLD | Electrical diagrams?
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