Best apps like O-KEY Authenticator

10+ similar apps compared and reviewed

3.4 avg rating

10 free apps

Updated October 2026

O-KEY Authenticator

PUFin ID A/S

🔧 Utilities

💼 Business

O is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to O

Klar Til Proverne by Thai Phan Dinh

Prepare for Danish tests

Editor's Choice

🔧 Utilities

0.0(0 ratings)

Free

Spool Buddy by Martian Code Oy

3D Printing Filament Tracker

Strong Contender

🔧 Utilities

4.3(9 ratings)

FreeIn-App Purchases

Effortlessly manage your 3D printing filament inventory. Track brands, colors, and usage with a simple, fast interface. Syncs seamlessly across Apple devices without requiring logins or network calls.

WelcomeBob by Welcomebob Group AS

Worth Considering

🔧 Utilities

1.0(1 ratings)

Free

This app digitizes your doorphone system, allowing you to see, speak to, and grant access to visitors from your smartphone. It simplifies building management by eliminating keys and enabling remote control and communication.

More apps like O

Seek - Best Finder

by SnappWish LLC

Free

Locate misplaced items like keys, wallets, and phones using compatible tracking devices. Activate your phone's ringer remotely, receive alerts when you leave belongings behind, and view their last known location to quickly retrace your steps.

Two-way audio alert / Phone ringerDistance indicatorLast seen location

Sound Meter, measure decibels

Free

Measure ambient noise levels in decibels (dB) using your phone's microphone. Track real-time noise, identify loud appliances, and monitor your exposure to potentially harmful sound levels.

Real-time decibel measurementNoise level trackingAppliance noise testing

🔧 Utilities

(122)

free with in-app purchases

Compare with O

Zyxel One

by Zyxel Communications Corporation

Free

Easily set up and manage your home Wi-Fi network with guided steps and intuitive tips. Features include QR code installation, parental controls, guest Wi-Fi sharing, and real-time network status monitoring.

QR code installationParental controls with schedulingGuest Wi-Fi sharing

Whisper: AI Chat bot Assistant

Ai Chatbot writer for GPT 4 0

Free

This app serves as a versatile AI assistant, offering both conversational chat capabilities and a text-to-image generation tool. It can answer questions, assist with writing tasks like essays and articles, and create visual art from text prompts.

AI chatbot for answering queriesText-to-image generatorWriting assistant for essays and content

🔧 Utilities

(202)

free with in-app purchases

Compare with O

Stitch It · Long Screenshots

Merge & Redact Screenshots

Free

Effortlessly combine multiple screenshots into a single long image, either vertically or horizontally. This tool offers redaction features to hide sensitive information before sharing.

Vertical and horizontal stitchingBatch import of screenshotsRedaction tools (blur, pixelate, overlay)

Tally • Quick Counter

Habit Tracking • Scorekeeping

Free

Easily track any count with intuitive gesture controls. Perfect for scorekeeping, habit tracking, or monitoring event attendance. Offers customizable feedback and widget support for quick updates.

Gesture-based countingUnlimited talliesCount up/down with custom steps

3D printer control & models

Free

Monitor and manage your 3D printers remotely. Control print parameters, receive notifications for print status, and integrate with model repositories and slicing software. Easily add new printers and cameras, with options for cloud or on-premises storage.

Real-time printer overviewRemote print managementTemperature, speed, flow control