# SLD \| Electrical diagrams — Draw schemes easily

> Tool for creating single-line electrical diagrams with standard symbols. (iPhone/iPad app by Angel Martinez.)

- Source: https://appshunter.io/ios/app/sld-electrical-diagrams/id1534899128 (this page in markdown: same URL + `.md`)
- Developer: [Angel Martinez](https://appshunter.io/developer/1446956865)
- Category: Productivity, Utilities
- Price: $1.99 with in-app purchases
- Rating: 4.10/5 from 132 App Store ratings · 143 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 13 MB
- Languages: American English, Dutch, French (France), German (Germany), Greek, Italian, Polish, European Portuguese, Russian, Serbian and 2 more
- Released: 2021-01-04
- Data updated: 2026-09-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sld-electrical-diagrams/id1534899128/reviews.md

## What is SLD | Electrical diagrams?

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

## Key features

- 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.)

## Pricing and in-app purchases

Base price: $1.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove ads, save diagram | $3.99 | one-time |


## Chart rankings

- #186 in Top Paid · Productivity (US App Store)

## What do users think of SLD | Electrical diagrams?

Overall sentiment: neutral

**Pros**

- 👍 User-friendly
- 🚀 Simple and fast
- 💡 Excellent for small projects
- 👍 Easy to use
- 👍 Intuitive interface

**Cons**

- 🐛 Crashes and stability issues
- 🐛 Saving and loading problems
- 🐛 Unreliable Pro version
- 🐛 Disappearing saved projects
- 🔍 Limited symbol library
- 🔍 Lacking advanced features

**Commonly reported bugs**

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

**Most requested features**

- 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
- Provide a user manual or tutorial

## Recent user reviews (10 of 143)

All indexed reviews: https://appshunter.io/ios/app/sld-electrical-diagrams/id1534899128/reviews.md

### 3/5 — Pagamento

*2026-02-17*

Fiz o pagamento para poder instalar o aplicativo, porém dentro dele pra poder salvar o projeto está cobrando novamente para a versão PRO.
Não entendo o motivo de ter que efetuar o pagamento novamente…
E sobre restauração de compra, clico e não dá em nada.

### 1/5 — User friendly

*2025-12-05*

Show me the easiest way to use this, I have the iPad which this app is recommended for. I also have the Apple pen. Every attempt that I have made to draw or design with the pen And or my finger does not allow me to do anything. I purchased the app and it’s basic version. As of right now, it’s a great concept, but not user-friendly at all.

### 4/5 — Need desktop version

*2025-12-05*

Pls launch desktop version so its become more easy to use

### 1/5 — SLD ELECTRICAL DIAGRAMS

*2025-11-30*

Save as not working, used for three days, now no files!!!

### 1/5 — Estafa

*2025-11-05, version 3.3.2*

Dinero a la basura, se cierra constantemente y los guardados los pierdo porque no puedo abrirlos

### 3/5 — Good not Great

*2025-09-21, version 3.3.2*

Could use the following:
1- Unlimited drawing area
2- Flip (mirror image) symbols. 
3- More response when moving or editing text fields (instead of having to move components then being able to move/edit text). 
4- Option for choosing colour for components/lines/text etc. 
5- Release a Mac version in the future (a more versatile one).

### 5/5 — Very simple

*2025-09-11*

Muy bueno para diagramas sencillos. Fácil de utilizar

### 1/5 — App ridicola

*2025-08-25, version 3.3.1*

Può andare bene per principianti ma davvero minimale e poco intuitiva. Per fare lo schema di un impianto civile medio è lunga e con pochi oggetti.. va bene solo se vuoi fare schemi generici,peccato!

### 5/5 — Excelente aplicación

*2025-08-20, version 3.3.1*

Aparte de la excepcional calidad de la aplicación, el equipo de soporte merece un sobresaliente. Muy satisfecho

### 1/5 — Extrem schlecht!

*2025-08-13*

Nicht kaufen, einfach ein kostenloses Programm aus dem Internet verwenden. Diese App ist sehr umständlich zu verwenden.

## Frequently asked questions about SLD | Electrical diagrams

### What is this app for?

This app allows users to quickly and easily create single-line electrical diagrams. It provides a library of commonly used symbols based on IEC and ANSI standards, which can be dragged and dropped onto the canvas to build electrical schemes.

### What kind of symbols are available?

The app includes a comprehensive range of symbols for electrical engineering, adhering to IEC and ANSI standards. These cover components like circuit breakers, switches, fuses, motors, generators, sockets, and various measurement devices, as well as text labels for units like volts and watts.

### What is the difference between the BASIC and PRO versions?

The BASIC version allows you to create diagrams with standard symbols and share them as images, PDFs, or files, but schemes are not saved and it contains ads. The PRO version, available via in-app purchase, enables you to open, edit, and save schemes, and removes ads.

### Can I save my electrical diagrams?

In the BASIC version, diagrams cannot be saved and opened later. However, the PRO version, which is an in-app purchase, allows you to open, edit, and save your created schemes, providing full project management capabilities.

### What if I need a symbol that is not included?

If you find that a specific symbol is missing from the app's library, you can contact the developers directly through the app. They are open to suggestions and may be able to add the symbol in future updates.

## Version history (last 5 releases)

### 3.3.4 — 2026-05-31

* Performance and stability improvements

### 3.3.3 — 2025-11-10

* Fixed Undo/Redo function

### 3.3.2 — 2025-09-16

* Performance and stability improvements

### 3.3.1 — 2025-08-17

* New Undo/Redo function

### 3.3.0 — 2025-08-11

* New Undo/Redo function

## Apps similar to SLD | Electrical diagrams

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Electronics Engineer Helper](https://appshunter.io/ios/app/electronics-engineer-helper/id896429646) | 4.8 (432) | Free | Productivity |
| [Lighting Calculations](https://appshunter.io/ios/app/lighting-calculations/id1021580336) | 4.8 (6) | Free | Productivity |
| [Electrical Calculations](https://appshunter.io/ios/app/electrical-calculations/id993232048) | 4.6 (126) | Free | Productivity |
| [Electrical Cost](https://appshunter.io/ios/app/electrical-cost/id1040802526) | 5.0 (3) | Free | Productivity |
| [Electrical Engineering: Quiz](https://appshunter.io/ios/app/electrical-engineering-quiz/id1330321712) | 4.9 (11) | Free | Productivity |
| [Circuit Planner](https://appshunter.io/ios/app/circuit-planner/id6472896392) | — | $8.99 | Productivity |

## More apps by Angel Martinez

- [InstElectric - Electricity](https://appshunter.io/ios/app/instelectric-electricity/id1447422315)
- [InstElectric Pro - Electricity](https://appshunter.io/ios/app/instelectric-pro-electricity/id1447888290)
- [Calculation of lighting](https://appshunter.io/ios/app/calculation-of-lighting/id1448345451)
- [Calculation of lighting Pro](https://appshunter.io/ios/app/calculation-of-lighting-pro/id1448371674)
- [Photovoltaic solar panel](https://appshunter.io/ios/app/photovoltaic-solar-panel/id1481439671)

All apps by Angel Martinez: https://appshunter.io/developer/1446956865

## Related topics

[electrical wiring diagram](https://appshunter.io/ios/topics/electrical-wiring-diagram) · [diagram electrical](https://appshunter.io/ios/topics/diagram-electrical) · [autocad electrical](https://appshunter.io/ios/topics/autocad-electrical) · [schematic electric](https://appshunter.io/ios/topics/schematic-electric) · [schemas](https://appshunter.io/ios/topics/schemas) · [electrical schematic](https://appshunter.io/ios/topics/electrical-schematic)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*