Best O2 Alternative Apps

56+ iOS apps curated and reviewed

4.1 avg rating

18 free apps

Updated June 2026

From beginner-friendly picks to power-user tools, our o2 alternative list covers 56+ iPhone apps updated through June 2026. Compare ratings, prices, and screenshots in one place.

Compare top O2 Alternative Apps (June 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	O2 aplikácia	Free	4.5★ (184)	No	No	Sep 2026
2	Oximeter - Track Oxygen SpO2	Free	4.5★ (547)	No	Yes	Sep 2026
3	Blood Oxygen \| O2 Monitor app+	Free	4.6★ (425)	No	Yes	Sep 2026
4	Skrill - Pay & Transfer Money	Free	4.6★ (25K)	Yes	No	Sep 2026
5	Waplog - Dating & Video Call	Free	4.6★ (55K)	Yes	Yes	Sep 2026
6	OnPhone: Second Number & eSIM	Free	4.6★ (52K)	No	Yes	Sep 2026
7	O2 Buddy: Blood Oxygen SpO2	$0.99	4.6★ (46)	No	Yes	Sep 2026
8	ChatOn AI - Chat Bot Assistant	Free	4.7★ (285K)	Yes	Yes	Sep 2026

Top Picks for O2 Alternative

O2 aplikácia by O2 Slovakia, s.r.o.

Dostaňte vaše O2 pod palec.

Editor's Choice

📊 Productivity

4.5(184 ratings)

Free

Manage your mobile plan, monitor usage, pay bills, and get exclusive benefits. Easily add new services, contact support via chat, and even get new SIM cards for your family.

Oximeter - Track Oxygen SpO2 by AVTOSTROI, OOO

Blood O2 Monitor Tracker

Strong Contender

💪 Health & Fitness

4.5(547 ratings)

FreeIn-App Purchases

Oximeter - Track Oxygen SpO2 screenshot 1

Oximeter - Track Oxygen SpO2 screenshot 2

Oximeter - Track Oxygen SpO2 screenshot 3

Oximeter - Track Oxygen SpO2 screenshot 4

Monitor and record your blood oxygen saturation (SpO2) levels with this personal health tracking app. It offers detailed analytics, daily wellness guides, and data export options. Sync your health data with Apple Health for a comprehensive overview.

Blood Oxygen | O2 Monitor app+ by Yana Shestakova

Saturation Level + Pulse Rate

Worth Considering

🏥 Medical

4.6(425 ratings)

FreeIn-App Purchases

Blood Oxygen | O2 Monitor app+ screenshot 1

Blood Oxygen | O2 Monitor app+ screenshot 2

Blood Oxygen | O2 Monitor app+ screenshot 3

Blood Oxygen | O2 Monitor app+ screenshot 4

Blood Oxygen | O2 Monitor app+ screenshot 5

Track your blood oxygen saturation (SpO2) and pulse rate daily. Log readings from your oximeter, monitor your normal range, and stay informed about your health. Features include a log diary, multi-profile support, and Apple Health synchronization.

More O2 Alternative apps to explore

Skrill - Pay & Transfer Money

Fast, secure online payments

Free

Easily send money globally, make secure online payments, and manage your finances. This app offers fast, cheap, and secure transactions, with options for a prepaid Visa card and multiple funding methods. Receive real-time notifications and enjoy customer support in your language.

Global money transfersSecure online paymentsSkrill VISA® Prepaid Card

💰 Finance

(25K)

free with in-app purchases

Waplog - Dating & Video Call

Meet, Chat & Date People

Free

Connect with new people globally through video calls and messaging. Discover singles nearby or worldwide using smart filters to find friendships or relationships. Share and watch video stories to express yourself and connect with others.

Meet new peopleVideo callsSmart filters for discovery

🌐 Social Networking

(55K)

freemium

OnPhone: Second Number & eSIM

2nd Phone Line, Texts & Calls

Free

Manage multiple private phone lines for personal and business use without needing extra SIM cards. Make calls, send texts, and even send/receive faxes worldwide. Offers eSIM data plans and AI-powered communication tools.

Multiple virtual phone numbersPrivate calls and textseSIM data plans

💼 Business

(52K)

free with in-app purchases

O2 Buddy: Blood Oxygen SpO2

Saturation Levels & Trends

$0.99

Easily monitor your blood oxygen levels with real-time data and clear charts. Track daily averages and wellness trends, with instant syncing from HealthKit to your Apple Watch. Your health data remains private and secure on your device.

Real-time blood oxygen readingsClear charts and instant dataSyncs with HealthKit

💪 Health & Fitness

(46)

free

ChatOn AI - Chat Bot Assistant

One Chatbot–Multiple Al Tools

Free

This AI assistant leverages advanced language models to help with writing, image transformation, document analysis, and web research. It offers over 100 prompts and integrates with your keyboard for seamless use across apps. Transform photos, summarize documents, and generate social media content with ease.

AI Chatbot & Virtual AssistantAI Writing AssistantPic Transformer (AI Photo Editing)

📊 Productivity

(285K)

free with in-app purchases

Blood Oxygen SpO₂ Tracker

Health Trends, Watch & Widgets

Free

Track your blood oxygen saturation (SpO₂) with smart alerts and historical data. Understand your overall wellness and make informed health decisions with detailed charts and insights on your iPhone and Apple Watch.

View latest SpO₂ measurementDetailed 7-day averages and chartsCustom low reading notifications

💪 Health & Fitness

(128)

free with in-app purchases

GhostTube SLS Camera

SLS Camera Alternative

Free

This app detects humanoid bodies and shapes using your device's camera and sensors, mimicking the functionality of a traditional SLS camera. It leverages LiDAR or dual-lens technology for depth perception, aiding in paranormal investigations. It's available for free with optional subscriptions.

Humanoid and shape detectionLiDAR and dual-lens depth sensingParanormal investigation aid

🎬 Entertainment

(9.2K)

free with in-app purchases

VPlus: BBW Dating & Video Chat

Live Chat, Date & Meet Curvy

Free

Connect with and date plus-size singles, including BBW and BHM individuals, who admire curvy body types. This app facilitates finding friends, long-term relationships, or marriage within the plus-size community.

Meet BBW and BHM singlesBrowse by body type (curvy, thick)Private messaging and photo sharing

🌐 Social Networking

(3.2K)

free with in-app purchases

Inogen Connect Portable Oxygen

by Inogen, Inc.

Free

Monitor your portable oxygen concentrator's battery life, settings, and receive important updates. Access helpful videos and troubleshooting information 24/7, all from your mobile device.

Real-time statsBattery life monitoringCurrent settings display

🏥 Medical

(266)

free

EZMatch: 18+ Dating,Meet&Flirt

Adult Friend Finder,Chat&Date

Free

This app connects adults over 18 for dating, friendships, or casual encounters. It uses AI for personalized suggestions and offers features like face authentication and voice introductions for a safer, more convenient experience.

AI-powered suggestionsFace authenticationSee people nearby

🌟 Lifestyle

(32K)

free with in-app purchases

MeetMe: Go Live & Meet People

Watch Streams & Video Chat

Free

Discover and connect with new people nearby who share your interests for friendly chats and making friends. This platform is for everyone, offering a fun and free way to expand your social circle and meet diverse individuals.

Find new people nearbyChat with shared interestsLive streaming

🌐 Social Networking

(374K)

free with in-app purchases

Video Lite

Browse, Play & Cast

Free

This app provides a unified browsing experience for video platforms, offering features like Chromecast support and picture-in-picture mode. Enjoy a native app feel with added conveniences such as dark mode and a sleep timer.

All-in-one video browserChromecast support on iOSPicture-in-picture mode

📷 Photo & Video

(171K)

free with in-app purchases

Jaumo Dating App: Flirt & Chat

Chat, find people and friends

Free

Connect with millions globally to find friends, dates, or serious relationships. Explore diverse communities based on interests, culture, and lifestyle. Enjoy free chatting and advanced matching features in a safe, inclusive environment.

Meet new people and make friendsExplore international datingDiscover people with similar interests

🌟 Lifestyle

(18K)

free with in-app purchases

Oxi tracker

by Guangdong Biolight Meditech Co., Ltd.

Free

Monitor blood oxygen levels, pulse rate, and perfusion index in real-time. View waveform and trend charts, ideal for daily health maintenance and sleep analysis.

Real-time blood oxygen waveformSpO2, PR, PI monitoringTrend charts

Calculate Total Oxygen Demand

Free

This application helps medical professionals and supply chain managers calculate total oxygen demand for various medical devices. It supports different oxygen sources like cylinders, liquid oxygen, and concentrators, aiding in efficient supply management for hospitals and individual users.

Calculate total oxygen demandSupports various oxygen sourcesWide range of delivery devices

by SEASTAR CORPORATION

Free

This app connects to a specific pulse oximeter via Bluetooth to record blood oxygen saturation and pulse rate. It automatically graphs your measurements, aiding in daily health management. View your data in clear graphs and lists for easy tracking.

Bluetooth connectivity to pulse oximeterAutomatic recording of SpO2 and pulse rateData graphing and list view

by Advanced Aviation LLC

$2.99

Calculate the approximate remaining oxygen in portable cylinders. Select your tank size, input current pressure and desired flow rate to see duration in minutes. Features a timer with alerts for low pressure.

Oxygen cylinder duration calculationSupports multiple cylinder sizes (A, B, D, E, G, H, K, M)Input current tank pressure

🔧 Utilities

(1)

paid

FAQ about O2 Alternative

What are the best o2 alternative apps for iPhone?

O2 aplikácia tops our o2 alternative apps ranking as of June 2026, with a 4.5-star average from 184 App Store ratings, and it's free to download.

Are there free o2 alternative apps for iPhone?

Yes — 18 of the top o2 alternative apps we rank are free to download, including O2 aplikácia and Oximeter - Track Oxygen SpO2.

Does O2 aplikácia have ads or in-app purchases?

O2 aplikácia has no ads and has no in-app purchases, according to its App Store listing as of June 2026.

How many o2 alternative apps are on the App Store?

We track 56+ o2 alternative apps on the iOS App Store as of June 2026, ranked by rating, recency, and analysis of real user reviews.

What can I do with the O2 app?

The O2 app allows you to conveniently monitor your current usage, pay bills, top up credit, manage your O2 Spolu groups, and get exclusive weekly surprises. You can also purchase new SIM cards, including the O2 Junior SIM for children, and activate services like travel insurance.

How do I contact support through the app?

You can easily connect with O2 support assistants for free directly through the chat feature within the app. This provides a quick and convenient way to resolve any more complicated issues you might encounter with your services.