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

MingKi Locker Widgets by Tiger Ng

Passcode Protected Content

Worth Considering

No ads. Clean factorization

0.0(0 ratings)

FreeIn-App Purchases

More apps like isPrime?

Prime Factors +Calc

(0)

Explore Numbers & Numerals

XLII

(0)

Make every minute momentous

Momentous Clock

Computes mathematical properties of timeSurfaces number theory factsDisplays time on 16-segment LED screens

This app transforms your device's clock into a dynamic display of mathematical properties and number theory facts for the current time. It optionally reveals personal number connections from your contacts, all processed securely on your device.

(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

Locker - Password Manager

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

(2)

BigInt Calculator

Arbitrary-precision math

Table-based input with step-by-step editingAutomatic real-time recalculationHandles complex expressions with parentheses and exponents

This app offers a fast, multi-threaded calculator with a spreadsheet-like interface for easy editing and instant updates. It handles large numbers and complex expressions with arbitrary-precision arithmetic, making it suitable for various real-world calculations.

(4)

free