Timer IC 555 Calculator

🇺🇸 United States
Peter Ho  | 
34
ASO score
Text
33/100
Reviews
60/100
Graphic
28/100
Other
0/100
rating
App Rating
4.5
rating
Votes
235.27K
rating
App Age
12y
rating
Last Update
Jul 11, 2025
rating
iAP
$1.99 - 1.99

Compare with Category Top Apps

Metrics
Current App
Category Top Average
Difference
Installs
261.1K
69.8M
-100%
Rating
4.54
4.3
+6%
Number of Ratings (Voted)
181.3K
91.5M
-100%
App Age
12y 0m
6y 9m
+78%
In-app Purchases Price
$2
$100
-98 %
Update Frequency
176d
97d
+82%
Title Length
23
26
-12%
Short Description Length
45
74
-39%
Description Length
691
2 682
-74%
Number of Screenshots
441
1273
-65 %
Has Video?
No
0% has videos
Size
0MB
0MB

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Downloads

Downloads Graph
Downloads icon
Total
260.9K
Last month icon
Last month
317

Text ASO

Title (
Characters: 23 of 50
)
Timer IC 555 Calculator
Short Description (
Characters: 45 of 80
)
Calculation of astable and monostable circuit
Description (
Characters: 691 of 4000
)
IC 555 is a basic timer IC for hobbyist or electronic engineers. This app is used to calculate monostable and astable circuit Features: 1. Calculate monostable circuit 2. Calculate frequency of astable circuit 3. Calculate component values of monostable and astable circuit. Save component values in CSV file (Excel file) Features in PRO version only: 1. Selectable preferred value of resistors and capacitors 2. Share CSV file to other apps 3. No limitation 4. No Ad Note : For those who need support please email to the designated email. Do NOT use either the feedback area to write questions, it is not appropriate and that is not guaranteed that can read them.}
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Visual ASO

Screenshots

Rating & Reviews

Reviews Overview
🧐 Coming Soon…
Rating
4.5
235 268 voters

Some Latest Reviews

Robert weaver
11 Dec, 2025
4
Very useful tool. a bit basic but explains the necessary details.
ZeroZero7
27 Jun, 2025
5
Muito top, mim ajuda muito na minha bancada eletrônica.
joe woodchuck
08 Apr, 2024
2
I thought this was going to give me the component values to use for the timing parameters I want. Instead I have to work this app backwards to approximate numerous times until I get somewhere near what I need.
Ind DES
21 Jan, 2024
5
Es educativo didáctico y muy bueno para investigar
German Garcia
08 Jan, 2024
5
Buenisimo para las practicas de electronica y como soporte para diseñar osciladores con el 555
Glib Olive (ASHTRAIN)
29 Nov, 2023
5
First Class application, always refreshing experiencing.
ToniVaretta
15 Jun, 2023
5
Es útil...el integrado 555 desde que fue diseñado y puesto en el mercado fue todo un éxito, con esta aplicación se puede ver todas las formas de uso, muy buena aplicación para los que nos gusta realizar circuitos experimentales...

Other

Additional Information
Rating:
4.52
Voted: 235.27K
Google Play Link:
Website: -
Email:
Privacy Policy:
Categories: Tools
Size: -
iAP: 1.99 - 1.99 $
Installs: 260.91K
App Age: 12 years
Release Date: Dec 26, 2013
Last Update: Jul 11, 2025
Version: 3.5.10
Version history
3.5.10
Jul 11, 2025
3.5.10<br>- Fix minor bugs<br><br>
3.5.05
May 22, 2025
3.5.05<br>- Fix minor bugs<br><br>
Version history