Comparison

Ampère 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

Ampère Mobile

This app provides essential tools for electricians and designers to calculate and verify electrical plant dimensions. It allows for immediate on-site evaluation and control of design data, including cable sizing, voltage drop, and temperature.

Highlights
  • Project calculation for current, cable sizing, voltage drop, and temperature
  • Support for low and medium voltage installations
  • Multiple international installation standards
  • Open, view, and edit electrical plant design files
  • On-site verification and photo storage
  • Real-time comment editing and sharing
Features
Read full description

App required for installers, designers and electricians, who wish to have at hand all the tools necessary for a correct dimensioning and verification of the electrical plant. Now you have all the design data available in the places where you need an immediate evaluation and control. There are two tools: 1) Project calculation Allows a fast calculation of the current absorbed by a load in low and medium voltage, the dimensioning of the electric cable, the verification of the voltage drop and of the working temperature of the cable. The App provides the freedom to set any voltage and frequency (50-60 Hz, DC) power supply, the load type (three-phase, single phase), the power factor and the ambient temperature. There are multiple International low voltage installation tables (CEI 64-8, IEC 60364, NF C 15-100, BS 7671, UNE 20460, NBR 5410) and as many for medium voltage. 2) Projects The design file of an electrical plant created by the program Ampere of Electro Graphics can be sent directly to your mobile device via email attachment or by copying the files on the device. Projects can be opened, viewed and edited on the device and then transferred to the computer with the same tools, and then proceed to upgrade the project using the "Update from Ampere Mobile". You can then work directly on the 'field' with your project Ampere, run verifications on sight, shooting and storing pictures for each unit, edit useful comments to be reviewed calmly in the office or to send to your colleagues in real time. The installer can use the app to share with you the project itself, promptly reporting any problems that may arise during the implementation phase of the electrical plant, and thus receive immediately any reviews. The application does not need internet connection.

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

Ampère Mobile4 screens
SLD | Electrical diagrams4 screens

Verdict

The call

The clearest difference is price: Ampère Mobile at Free against SLD | Electrical diagrams's $1.99. Ampère Mobile also leads on rating (5.0 vs 4.1) and in-app purchases (none vs 1). SLD | Electrical diagrams's advantage is update cadence (fortnightly vs every 11 months) and ratings volume (132 vs 1). On ads, device support and iOS requirement 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

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

ReceptionRating · Positive reviews · Number of ratings

Ampère Mobile holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: SLD | Electrical diagrams has 132 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 25% of Ampère 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

Ampère Mobile ships an update every 11 months, SLD | Electrical diagrams fortnightly. The most recent releases landed on June 25, 2026 and September 23, 2026 respectively.

Scorecard7 real differences · 3 level
Ampère Mobile versus SLD | Electrical diagrams: the parameters behind the verdict, then further details
ParameterAmpère MobileSLD | Electrical diagrams
PriceFree — better$1.99
Rating5.0 (1 ratings) — better4.1 (132 ratings)
Positive reviews25.0% of reviews45.5% of reviews — better
Number of ratings1132 — better
Update frequencyEvery 11 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.011.0
Further details — not scored
Size41 MB13 MB
Age rating4+4+
DeveloperElectro Graphics SrlAngel Martinez

Customer experience

Ampère Mobile

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews16 reviews
Positive25.0%
Neutral12.5%
Negative62.5%

SLD | Electrical diagrams

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

Bugs and requests

Ampère 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

Ampère Mobile

No in-app purchases

1 purchases

SLD | Electrical diagrams

One-time1
  • Remove ads, save diagram$3.99

Questions

Is Ampère Mobile free?
Ampère 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, Ampère Mobile or SLD | Electrical diagrams?
Ampère Mobile is rated higher. Ampère Mobile averages 5.0 out of 5 from 1 ratings, while SLD | Electrical diagrams averages 4.1 from 132 ratings.
Do Ampère Mobile or SLD | Electrical diagrams have ads?
Neither Ampère Mobile nor SLD | Electrical diagrams shows ads.
Which is updated more often, Ampère Mobile or SLD | Electrical diagrams?
Ampère Mobile ships an update every 11 months, and SLD | Electrical diagrams fortnightly. Most recently, Ampère Mobile was updated on June 25, 2026 and SLD | Electrical diagrams on September 23, 2026.

Other comparisons