Best E Red Book Apps

211+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated July 2026

Every iPhone needs a few good e red book apps. We benchmark 211+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top E Red Book Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Halliburton eRedBook® MobileHalliburton eRedBook® MobileFree3.7★ (30)NoNoJul 2026
2rednoterednoteFree4.9★ (267K)YesYesJul 2026
3Red Book®Red Book®Free4.8★ (64)YesYesJul 2026
4ReadEra – book reader pdf epubReadEra – book reader pdf epubFree4.2★ (222)NoNoJul 2026
5Ola: Book Cab, Auto, Bike TaxiOla: Book Cab, Auto, Bike TaxiFree4.6★ (69K)YesNoJul 2026
6eBooks: American Red CrosseBooks: American Red CrossFree1.7★ (21)NoNoJul 2026
7Goodreads: Book Tracker & MoreGoodreads: Book Tracker & MoreFree4.8★ (730K)YesNoJul 2026
8Bible for Women & Daily StudyBible for Women & Daily StudyFree4.9★ (115K)YesNoJul 2026

Top Picks for E Red Book

Halliburton eRedBook® Mobile#1

Halliburton eRedBook® Mobile by Halliburton

Editor's Choice
💼 Business
3.7(30 ratings)
Free
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This app provides essential data and calculators for oil and gas well calculations. Access key dimensions, strengths, and specifications for tubulars to quickly determine volumes and capacities. Supports multiple unit systems for flexible calculations.

rednote#2

rednote by Xingin Information Technology (Shanghai) Co., Ltd

share, connect, love
Strong Contender
🌐 Social Networking
4.9😐(267K ratings)
FreeAdsIn-App Purchases
#17in Social Networking
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Connect with a global community to share your daily life, from hobbies and interests to personal experiences. Discover inspiration and build connections through authentic and helpful interactions.

What We Love

  • 🌟 Amazing app with great features
  • 👍 Intuitive and user-friendly interface
  • 💕 Welcoming and supportive community
  • 🌍 Opportunity to connect with diverse cultures

Room to Improve

  • 🔇 Lack of translation options for non-Chinese users
  • 🚫 Strict content moderation and censorship
  • 🤖 Aggressive recommendation algorithm
Red Book®#3

Red Book® by Unbound Medicine, Inc.

American Academy of Pediatrics
Worth Considering
🏥 Medical
4.8(64 ratings)
FreeAdsIn-App Purchases
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This app provides the latest information on pediatric infectious diseases from the American Academy of Pediatrics. It includes immunization schedules, vaccine status, influenza resources, and new chapters on COVID-19 and Mpox. Features like note-taking and enhanced search aid quick access to essential medical data.

More E Red Book apps to explore

4
ReadEra – book reader pdf epub
ReadEra – book reader pdf epub
ReadEra – book reader pdf epub
Read books & PDF files easily!
Free

This app allows you to read and listen to books and documents in various formats, including PDF and EPUB. It offers text-to-speech functionality, customizable reading settings, and a built-in book manager for your library. Enjoy an ad-free and registration-free reading experience.

Multi-format ebook support (EPUB, PDF, MOBI, DOCX, etc.)Text-to-Speech (TTS) for listening to booksAd-free and registration-free experience
📚 Books
(222)
free
5
Ola: Book Cab, Auto, Bike Taxi
Ola: Book Cab, Auto, Bike Taxi
Ola: Book Cab, Auto, Bike Taxi
Book Rides & Order Food online
Free

Book affordable rides like bikes, autos, and taxis with just a few taps. This app also offers parcel delivery and food ordering services across many Indian cities.

Book various ride types (bike, auto, sedan, SUV)Outstation and rental cab optionsParcel delivery within city limits
✈️ Travel
(69K)
free with in-app purchases
6
eBooks: American Red Cross
eBooks: American Red Cross
eBooks: American Red Cross
Training anytime, anywhere
Free

Access American Red Cross training manuals on your mobile device. Study first aid, CPR, and lifesaving skills with embedded videos, images, and interactive quizzes. Learn at your own pace, anytime and anywhere.

Mobile eBook readerEmbedded videosInteractive quizzes
📚 Education
(21)
free
7
Goodreads: Book Tracker & More
Goodreads: Book Tracker & More
Goodreads: Book Tracker & More
Kindle, Audible, Amazon & more
Free

This app connects you with a vast community of readers to discover new books. Get personalized recommendations, track your reading progress, and see what your friends are enjoying. Scan book barcodes in stores to add them to your wish list and read reviews before you buy.

Personalized book recommendationsReading challenge participationBook cover and barcode scanner
📚 Books
(730K)
free with in-app purchases
8
Bible for Women & Daily Study
Bible for Women & Daily Study
Bible for Women & Daily Study
Women's Devotional KJV Bible
Free

A beautifully designed Bible app for women featuring daily devotionals, verses of the day, and customizable reading plans. Enjoy offline access to audio Bible, note-taking, and bookmarking features.

Daily devotionalsVerses of the dayCustomizable reading plans
📚 Books
(115K)
ad-supported
9
Busbud: Bus & Train Tickets
Busbud: Bus & Train Tickets
Busbud: Bus & Train Tickets
Find routes & book travel fast
Free

Find and book bus, train, carpool, and ferry tickets effortlessly. Compare routes, sort by price or speed, and manage all your travel details in one place. Enjoy a smooth journey with e-ticket scanning and real-time updates.

Effortless e-ticket scanningSort trips by earliest, latest, cheapest, or fastestSave travel preferences and payment info
✈️ Travel
(4.6K)
free with in-app purchases
10
Choice Hotels : Book Hotels
Choice Hotels : Book Hotels
Choice Hotels : Book Hotels
Book over 7k hotels worldwide
Free

Easily find and book hotels worldwide, manage your reservations, and earn rewards. This app simplifies travel planning for business or leisure, offering guaranteed lowest prices and seamless booking.

Search hotels by location or attractionsView hotel photos, maps, and virtual toursRead user reviews
✈️ Travel
(101K)
free with in-app purchases
11
OYO: Hotel Booking App & Deals
OYO: Hotel Booking App & Deals
OYO: Hotel Booking App & Deals
Best Offer : Book Budget Rooms
Free

Easily book hotels and vacation homes globally with a vast selection of accommodations. Enjoy comfort, convenience, and affordability for any trip, from budget stays to luxurious getaways. Offers exclusive deals and membership benefits for savings.

Global hotel and home bookingDiverse accommodation types (hotels, villas, homes)Budget-friendly to luxurious options
✈️ Travel
(9K)
free with in-app purchases
12
Agoda: Cheap Flights & Hotels
Agoda: Cheap Flights & Hotels
Agoda: Cheap Flights & Hotels
Book a hotel, flight & more
Free

Book flights and accommodations worldwide with ease. Discover millions of hotels, resorts, and homes, alongside deals from over 200 airlines. Travel confidently with verified reviews, local information, and 24/7 customer support.

Book cheap flights from 200+ airlinesSearch millions of accommodationsVerified reviews and local information
✈️ Travel
(175K)
free with in-app purchases
13
Wyndham Hotels & Resorts
Wyndham Hotels & Resorts
Wyndham Hotels & Resorts
Book 9,000+ hotels worldwide
Free

Book stays at over 8,900 hotels worldwide across 22 brands. Features include streamlined booking, in-stay conveniences like mobile check-in and front desk texting, and Wyndham Rewards member benefits such as point tracking and exclusive offers.

Streamlined booking with Lightning Book™Road Trip Planner for multi-hotel bookingsIn-stay features: mobile check-in/out, front desk texting
✈️ Travel
(267K)
free with in-app purchases
14
FlixBus: Book Bus Tickets
FlixBus: Book Bus Tickets
FlixBus: Book Bus Tickets
Book bus and train tickets
Free

Book affordable bus and train tickets across Europe, Turkey, Brazil, and the USA. Your mobile ticket, trip information, and real-time tracking are all within the app. Receive important updates via push notifications for a seamless travel experience.

Book bus and train ticketsMobile ticket (no printing)Real-time trip tracking
✈️ Travel
(87K)
free with in-app purchases
15
Badoo Dating: Meet New People
Badoo Dating: Meet New People
Badoo Dating: Meet New People
Chat and date or make friends.
Free

This app provides a safe and encouraging space to express yourself and make meaningful connections. It offers features to help you find dates, long-term relationships, new friends, or simply chats, with advanced technology to block fake accounts for an authentic experience.

Advanced FiltersProfile QuestionsPeople Nearby
🌟 Lifestyle
(146K)
free with in-app purchases
16
RedTaxi: Cab, Auto, Bike Rides
RedTaxi: Cab, Auto, Bike Rides
RedTaxi: Cab, Auto, Bike Rides
Book Ride Online & Rent Cars
Free

Book safe, reliable, and comfortable rides across Tamil Nadu. Choose from city cabs, outstation journeys, airport transfers, and flexible car rentals with chauffeur options. Also offers a fast bike ride service for solo travel.

Book city cabsOutstation journeysAirport transfers
✈️ Travel
(24)
free
17
RedShelf
RedShelf
RedShelf
by RedShelf
Free

Access and read your digital textbooks on any device. Highlight text, take notes, create flashcards, and have content read aloud. Your notes and highlights sync across all your devices.

Access textbooks on any deviceHighlight text and take notesCreate flashcards from content
📚 Education
(7.1K)
free
18
Cinderella - Book & Games (Lite)
Cinderella - Book & Games (Lite)
Cinderella - Book & Games (Lite)
by Ivan Trotter
Free

An interactive storybook featuring the classic Cinderella tale with narration and illustrations. Includes two fun games, Memory Match and Jigsaw puzzles, designed for young children. This lite version offers a preview of the story with the option to purchase the full book within the app.

Interactive storybookMultilingual narrationMemory Match game
📚 Books
(33)
free with in-app purchases
19
Cleartrip Flights, Hotels, Bus
Cleartrip Flights, Hotels, Bus
Cleartrip Flights, Hotels, Bus
Book Flights, Hotels & Buses
Free

Book flights, hotels, and buses with ease and save money. Offers flexible cancellation and rescheduling options, special fares, and a wide selection of accommodations and transport. Find the best deals for your next trip.

Book flights, hotels, and busesUp to 15% off domestic flightsUp to 25% off hotel bookings
✈️ Travel
(3.7K)
free
20
Flashlight ○
Flashlight ○
Flashlight ○
Torch, Flash & Strobe Light
Free

This utility app provides a bright and fast flashlight experience for your device. It offers advanced features like adjustable brightness, a strobe mode with customizable frequencies, and an SOS signal function. The app boasts an intuitive design and quick activation to assist you in various situations.

Instant ON for quick activationAdjustable LED brightnessStrobe mode with adjustable frequencies
🔧 Utilities
(27K)
ad-supported

FAQ about E Red Book

What are the best e red book apps for iPhone?
Halliburton eRedBook® Mobile tops our e red book apps ranking as of July 2026, with a 3.7-star average from 30 App Store ratings, and it's free to download.
Yes — 20 of the top e red book apps we rank are free to download, including Halliburton eRedBook® Mobile and rednote.
Halliburton eRedBook® Mobile has no ads and has no in-app purchases, according to its App Store listing as of July 2026.
We track 211+ e red book apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
The app provides a digital reference derived from the Halliburton Cementing Tables, offering essential data and calculators for drilling, cementing, and completing oil and gas wells. It includes volume calculators and data for various pipes like casing and tubing.
Key features include instant access to pipe dimensions and strengths, quick calculation of capacity and annulus volumes, support for Metric and Imperial units, calculation of total volumes in multiple units, and calculation of volume per depth. Results can also be copied easily.