This utility app calculates the time constant and energy stored in a capacitor. It helps understand the time-delay characteristics of electrical circuits when a voltage is applied.
3.8(4 ratings)
$2.99
Best apps like SI Prefix Converter
10+ similar apps compared and reviewed
4.2 avg rating
1 free apps
Updated July 2026
Whether you want more options like SI Prefix Converter or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.
Top Alternatives to SI Prefix Converter
Operational Amplifiers Pro by ALG Software Lab SIA
Op-Amp Calculator ToolkitStrong Contender
🔧 Utilities
5.0(1 ratings)
$4.99
This app provides interactive calculators and reference information for designing and analyzing op-amp circuits. It offers step-by-step explanations and technical data on popular op-amp series, aiding students and engineers in circuit development and prototyping.
0.0(0 ratings)
$0.99
More apps like SI Prefix Converter
4
Electronic Circuits Calc Pro
Electronic Engineering Toolkit
$4.99
🔧 Utilities
(0)
5
Electrical Calculation Tools
Handy tool for Electrician
$1.99
🔧 Utilities
(0)
6
Timer 555 Calculator Pro
by Siu Yuen Ho
$0.99
Calculate parameters for monostable and astable circuits. Find component combinations for desired pulse width or frequency. Share circuit files via iCloud Drive or AirDrop.
Calculate monostable pulse widthCalculate astable frequencyFind component combinations
🔧 Utilities
(3)
paid7
Lunar age
Displays the lunar age
Free
🔧 Utilities
(0)
8
Transformer Calculator Plus
Step-up Step-down Transformer
$2.99
This utility app calculates key parameters for transformers, including voltage, current, and turns ratio. It helps determine if a transformer is step-up or step-down, essential for power conversion applications.
Calculate primary and secondary voltageCalculate primary and secondary currentCalculate transformer turns ratio
🔧 Utilities
(4)
paid9
Calling Card
Card Manager & Dialer
$1.99
This app helps you save money on international calls by managing calling cards and carrier prefixes. It can automatically select the best card for you based on the number you dial. It also supports PBX routing and Skype To Go calls.
Manage multiple calling card accountsAutomatic card selectionDial from contacts or recent calls
🔧 Utilities
(6)
paid10
Custom Formulas
by Anthony Dunk
$3.99
This utility app allows users to create and manage complex calculations with multiple inputs and outputs. Formulas can be linked, grouped into categories, and customized for display precision. Share your custom calculations easily via email.
Multiple input/output formula supportLinked formulas via variable namesFormula categorization
🔧 Utilities
(1)
paid