Best isPrime? alternatives: apps like isPrime?

Whether you want more options like isPrime? 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 isPrime?

Eternal Clock by Daehyeon Shin

Always On. No Ads. Just Time.

Editor's Choice

5.0(1 ratings)

Free

A minimalist digital clock that displays the time with no distractions. It offers a clean interface with subtle visual cues like a sun, moon, or mealtime hints, all without ads, data collection, or notifications.

Voltcraft VC-41 by CEI Conrad Electronic International (HK) Limited

Strong Contender

0.0(0 ratings)

Free

Pixel Clock - Grid by YIMING SHI

Animated Pixel Clock

Worth Considering

Locker - Password Manager

0.0(0 ratings)

FreeIn-App Purchases

More apps like isPrime?

Store Passwords Safe and Easy

Store text, voice, drawings, and photosHigh-strength encryptionImport and export passwords

Securely store and manage all your passwords and private information. Supports text, voice, drawings, and photos with high-strength encryption. Offers iCloud backup and restore for easy data recovery.

free with in-app purchases

(7)

Dice Roller Calculator

Advanced dice roller

Digital dice simulationMathematical expression supportDice modifiers for RPGs

This app functions as a digital dice roller, allowing users to simulate dice rolls for various games and calculations. It supports complex mathematical expressions and includes modifiers for popular tabletop role-playing games.

(2)

free

Angry Port Scanner

by osama ishmilh

Fast host discoveryOpen port and service scanningSmart device identification

This app quickly scans your local Wi-Fi network to identify all connected devices and the services they are running. It provides detailed information, helps troubleshoot connections, and offers privacy by performing all scans on your device.

(1)

free

Convex Programmer's Calculator

Byte flip, bit shift, 2's comp

Number base conversionTwo's complement calculationByte flipping for endianness

Convert numbers between hexadecimal, decimal, octal, and binary. Perform byte flips, bit shifts, and calculate two's complement. Features bit indicators and word grouping for improved binary readability.

(6)

free

Scientific Calculator - CalCon

Calculate & convert everything

Scientific and simple calculator layoutsOver 150 specialized calculatorsUnit and currency conversion

This comprehensive utility app offers a powerful calculator and converter for everyday problems. It features a scientific calculator, over 150 specialized calculators, and unit/currency converters with offline capabilities. Users can also create custom calculators through a drag-and-drop interface.

free with in-app purchases

(17)