# 555 Timer Calc > NE555 timer calculator & simulator: astable, monostable and PWM circuits Canonical page: [https://chrome-stats.com/d/com.antotech.timercalc](https://chrome-stats.com/d/com.antotech.timercalc) ## Overview - **ID:** `com.antotech.timercalc` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** AntoTech - **Category:** TOOLS - **Downloads:** 363 - **Version:** 1.2.6 - **Last updated:** 2026-08-09 - **First published:** 2026-02-06 - **Publisher country:** SV - **Size:** 17 MB - **Data as of:** 2026-09-13 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.antotech.timercalc) - **Website:** [https://futbolfan.github.io/app-ads](https://futbolfan.github.io/app-ads) - **Privacy policy:** [https://sites.google.com/view/privacypolicyfor555timercalc](https://sites.google.com/view/privacypolicyfor555timercalc) ## Description πŸš€ The 555 Timer Integrated Circuit!
The ultimate professional tool for electronics engineers, students, and makers. Design, calculate, and simulate NE555 circuits with unparalleled precision and a stunning, intuitive interface.

✨ Main Features (Free):
πŸ”„ Astable & Monostable Modes: Instant calculation of frequency, duty cycle, period, and time constants.
πŸŽ›οΈ Advanced PWM Design: Dedicated logic for Pulse Width Modulation control and signal optimization.
🎨 Resistor Color Code: Automatic visual rendering of 4-band resistor values for your build.
πŸ“Š Interactive Waveform: Real-time graph showing both Output signal and Capacitor charge/discharge curves.
πŸ“ Reverse Design Assistant: Input your target frequency or time, and let the app suggest the best commercial component combinations β€” even using your own Junkbox of capacitors on hand.
πŸ“ BOM Generator: Generate and share your Bill of Materials (BOM) in a single tap.
πŸ”Œ SPICE Netlist Export: Get a ready-to-simulate netlist for LTspice/ngspice.

πŸ› οΈ Professional Tech Stack:
Chip Library: Choose between NE555, NE556 (dual timer), LMC555, TLC555 and ICM7555 β€” each with real datasheet current curves, not generic estimates.
Commercial Standards: Snap component values to E12 or E24 standard resistor series.
Dynamic Schematic: A technical circuit diagram that updates live as you tune your values.
Technical Guide: Deep-dive into formulas, theoretical basis, a clear DIP-8 Pinout diagram, and advanced notes on capacitor ESR, decoupling and PWM filtering.

πŸ’Ž Unlock 555TimerCalc Pro:
πŸ“ˆ Full Tolerance Analysis: worst-case corner analysis, Monte Carlo simulation, thermal drift and a sensitivity (tornado) ranking by component.
🌊 Worst-Case Envelope: see the fastest/slowest possible unit directly on the oscilloscope graph.
πŸ“„ PDF Export: a polished design report, ready to share with a client or your team.
πŸ’Ύ Unlimited Design History: save every configuration you've ever built.
🚫 Zero Ads: a completely clean experience.
One-time purchase. Yours forever, no subscription.

🌎 Available in English & Spanish.

Optimized for offline work and mobile-first productivity. Stop guessing your RC values and start engineering with confidence! ⚑ ## Rankings - #1,492,878 β€” Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_ADSERVICES_AD_ID` - `android.permission.ACCESS_ADSERVICES_ATTRIBUTION` - `android.permission.ACCESS_ADSERVICES_TOPICS` - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.FOREGROUND_SERVICE` - `android.permission.INTERNET` - `android.permission.READ_EXTERNAL_STORAGE` - `android.permission.VIBRATE` - `android.permission.WAKE_LOCK` - `android.permission.WRITE_EXTERNAL_STORAGE` - `com.android.vending.BILLING` - `com.android.vending.CHECK_LICENSE` - `com.antotech.timercalc.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` - `com.google.android.gms.permission.AD_ID` ## Similar extensions and apps - [NE555 Timer](https://chrome-stats.com/d/com.electronial.a555timer) β€” 7,003 users - [Timer IC 555 Calculator](https://chrome-stats.com/d/com.peterhohsy.timer555calculator) β€” 270,060 users, 4.54 / 5 - [Timer IC 555](https://chrome-stats.com/d/net.seesaa.sweet_baked_pie.Timer555) β€” 29,264 users, 4.00 / 5 - [555 Timer & Oscillators Pro](https://chrome-stats.com/d/com.algsoftlab.timer555pro) β€” 136 users - [Electronics Tools & Calculator](https://chrome-stats.com/d/com.saulawa.anas.electronics_tollbox) β€” 1,056,915 users, 4.32 / 5 - [Electronics Calculator Toolbox](https://chrome-stats.com/d/io.github.a4b11s.toolbox) β€” 8 users - [​ElectroBit:Circuit Calculator](https://chrome-stats.com/d/com.eleobo.electrobit) β€” 1,361 users - [Circuit Playground](https://chrome-stats.com/d/com.adafruit.circuitplayground) β€” 2,310 users, 3.91 / 5 - [RCircuitPro](https://chrome-stats.com/d/com.rcircuitpro.timer) - [Electronics Circuit Calc Pro](https://chrome-stats.com/d/com.saulawa.electronics.electronics_toolkit_pro) β€” 12,628 users, 4.61 / 5 - [Ele-calc](https://chrome-stats.com/d/com.elecalc.app) β€” 17 users - [ElectroCalc – Electronics Calc](https://chrome-stats.com/d/com.alexiddev.radiocalc) β€” 8 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.antotech.timercalc)