# DLD: Logic Design & Circuits

> Design digital logic circuits, wire them up and watch the signal run.

Canonical page: [https://chrome-stats.com/d/com.skyloopapps.dldsimulator](https://chrome-stats.com/d/com.skyloopapps.dldsimulator)

## Overview

- **ID:** `com.skyloopapps.dldsimulator`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** SKYLOOP APPS (SMC-PRIVATE) LIMITED
- **Category:** EDUCATION
- **Downloads:** 248
- **Version:** 1.0.1
- **Last updated:** 2026-10-31
- **First published:** 2026-09-22
- **Publisher country:** PK
- **Size:** 18 MB
- **Data as of:** 2026-11-06
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.skyloopapps.dldsimulator)
- **Website:** [https://www.skyloopapps.com](https://www.skyloopapps.com/)
- **Privacy policy:** [https://www.skyloopapps.com/dld-simulator/privacy](https://www.skyloopapps.com/dld-simulator/privacy)

## Description

DLD is a digital logic design and circuits workbench for your phone. Drop gates onto the<br>bench, wire them together, flip a switch, and watch the signal travel through<br>the circuit in real time.<br><br>Built for students working through a digital logic design course — and for<br>anyone who wants to see Boolean algebra actually do something.<br><br>BUILD ANYTHING<br>• 28 components: switches, clocks, Vcc and ground, every standard gate,<br>  tri-state buffers, multiplexers, flip-flops, displays and probes<br>• Gates take 2 to 8 inputs — one wide NAND instead of three cascaded ones<br>• Tap a component to reach its settings: input count, clock speed, colour<br>• A work bench far bigger than the screen, with pan, zoom and fit-to-circuit<br><br>SEE IT WORKING<br>• Current animates along every live wire, so you can follow a signal<br>• LEDs, LED bars, 7-segment and hex displays light up as the circuit runs<br>• A school bell that rings for as long as it has current<br>• Logic probes read out 1 or 0 anywhere you wire one<br><br>UNDERSTAND IT<br>• Boolean equations written out from whatever you have drawn<br>• A full truth table generated from your circuit, ready to copy out<br>• Conflicting drivers on a net are flagged rather than quietly wrong<br>• A tutorial section covering every gate symbol and its truth table<br><br>KEEP YOUR WORK<br>• Save and reopen as many circuits as you like<br>• Undo and redo everything<br>• Recolour wires, lamps and blocks however you want to read them<br><br>COMPONENTS<br>Switch · Clock · Vcc · GND · AND · OR · NOT · NAND · NOR · XOR · XNOR ·<br>Buffer · Tri-state buffer · Tri-state NOT · MUX · DEMUX · D flip-flop ·<br>T flip-flop · JK flip-flop · Virtual links · LED · LED bar · 7-segment ·<br>Hex display · Bell · Probe · Label<br><br>PRIVATE BY DEFAULT<br>No account. No sign-in. No analytics. No ads. Nothing leaves your device —<br>your circuits are saved on the phone and nowhere else. The app works with no<br>network connection at all.

## Rankings

- #1,596,129 — Overall

## Permissions and access

### Permissions

- `com.android.vending.CHECK_LICENSE`
- `com.skyloopapps.dldsimulator.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.skyloopapps.dldsimulator)