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Best Reference App

244+ iOS apps curated and reviewed

4.3 avg rating
19 free apps
Updated August 2026

If you already know Wikipedia, this is the deeper bench. 244+ reference app for iPhone, all reviewed and ranked by user rating, recency, and download trend as of August 2026.

Compare top Reference App (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1WikipediaWikipediaFree4.3★ (6.2K)NoNoAug 2026
2Dictionary.com: English WordsDictionary.com: English WordsFree4.8★ (328K)YesNoAug 2026
3Magic Poser - Art Pose ToolMagic Poser - Art Pose ToolFree3.8★ (12K)NoYesAug 2026
4NASANASAFree4.8★ (64K)NoNoAug 2026
5Merlin Bird ID by Cornell LabMerlin Bird ID by Cornell LabFree4.9★ (111K)NoNoAug 2026
6BibleBibleFree4.9★ (14M)NoNoAug 2026
7World Map +World Map +Free4.7★ (8K)YesNoAug 2026
8Indigo - Medical ReferenceIndigo - Medical ReferenceFree4.7★ (14)NoNoJul 2026

Top Picks for Reference App

Wikipedia#1

Wikipedia by Wikimedia Foundation

The Free Encyclopedia
Editor's Choice
🔍 Reference
4.3😐(6.2K ratings)
Free
#42in Reference
Wikipedia screenshot 1
Wikipedia screenshot 2
Wikipedia screenshot 3
Wikipedia screenshot 4
Wikipedia screenshot 5
Wikipedia screenshot 6

Access the world's largest free knowledge base with over 60 million articles in nearly 300 languages. Explore trending topics, save articles for offline reading, and customize your reading experience with various themes and text sizes. Contribute to the community by editing articles and participating in discussions.

What We Love

  • 🚀 Vast information repository
  • 👍 Customizable reading experience
  • 🚀 Convenient offline access
  • 👍 Reliable and trustworthy content

Room to Improve

  • 🐛 Occasional crashes and freezes
  • 🔋 High data usage and battery drain
  • 🔒 Concerns about political bias and censorship
Dictionary.com: English Words#2

Dictionary.com: English Words by Curiosity Media

Dictionary, Thesaurus, Vocab
Strong Contender
🔍 Reference
4.8😐(328K ratings)
FreeAdsIn-App Purchases
Dictionary.com: English Words screenshot 1
Dictionary.com: English Words screenshot 2
Dictionary.com: English Words screenshot 3
Dictionary.com: English Words screenshot 4
Dictionary.com: English Words screenshot 5

Access over 2 million trusted definitions and synonyms for English words. Enhance your vocabulary with daily new words, example sentences, and audio pronunciations. This app provides grammar tips and editorial content to deepen your understanding of the English language.

What We Love

  • 🚀 Robust dictionary and thesaurus
  • 🤓 Helpful resources like blogs and articles
  • 💡 Useful word games and puzzles
  • 👍 Easy to use and navigate

Room to Improve

  • 🐛 Inconsistent search results and missing definitions
  • 💸 Aggressive ads even after paid upgrades
  • 🤯 Frequent crashes and performance issues
Magic Poser - Art Pose Tool#3

Magic Poser - Art Pose Tool by Wombat Studio, Inc.

Best 3D pose reference app
Worth Considering
🎨 Graphics & Design
3.8😐(12K ratings)
FreeIn-App Purchases
Magic Poser - Art Pose Tool screenshot 1
Magic Poser - Art Pose Tool screenshot 2
Magic Poser - Art Pose Tool screenshot 3
Magic Poser - Art Pose Tool screenshot 4
Magic Poser - Art Pose Tool screenshot 5
Magic Poser - Art Pose Tool screenshot 6

This app provides a 3D character posing tool for artists, allowing them to create custom scenes with realistic anatomy, lighting, and props. It offers intuitive drag-and-pose controls and extensive libraries for detailed artwork creation.

What We Love

  • 🚀 Easy to use
  • 🚀 Helpful for drawing references
  • 👍 Good variety of models and props
  • 👍 Smooth posing and manipulation

Room to Improve

  • 🔒 Many features locked behind paywall
  • 🔒 Lack of free female model
  • 🐛 Buggy joint and camera controls

More Reference App apps to explore

4
NASA
NASA
NASA
by NASA
Free

Explore the universe with access to live and on-demand NASA+ videos, a vast collection of stunning images, and the latest mission news. Discover interactive augmented reality experiences and track the International Space Station's path.

NASA+ video streaming21,000+ NASA imagesLatest NASA news
📚 Education
(64K)
free
5
Merlin Bird ID by Cornell Lab
Merlin Bird ID by Cornell Lab
Merlin Bird ID by Cornell Lab
Identify Birds You See & Hear
Free

Easily identify birds by sight or sound using advanced machine learning. Explore birds in your region, track your sightings, and learn about species with photos, sounds, and range maps. This free app from the Cornell Lab of Ornithology helps build your birding skills.

Identify birds by photoIdentify birds by soundAnswer simple questions for ID
🔍 Reference
(111K)
free with in-app purchases
6
Bible
Bible
Bible
Daily Study, Audio & Prayer
Free

Access a vast library of Bible versions in multiple languages, listen to audio Bibles, and engage in daily study with friends. Create prayers, add notes, and customize your reading experience with themes and verse images.

3,500+ Bible versionsAudio BiblesThousands of Reading Plans
🔍 Reference
(14M)
free with in-app purchases
7
World Map +
World Map +
World Map +
Quick Reference World Maps
Free

Access essential world maps for quick reference and navigation. Explore political, detailed, and time zone maps, with interesting facts about countries. Works online and offline, ideal for students, travelers, and curious minds.

Quick access to essential world mapsPolitical, Detailed, and Time Zones MapsEasy map switching
🔍 Reference
(8K)
ad-supported
8
Indigo - Medical Reference
Indigo - Medical Reference
Indigo - Medical Reference
Knowledge at Your Fingertips
Free

A comprehensive medical reference for internal medicine, covering conditions from anemia to HIV/AIDS. It offers guidance for managing common ward and ICU cases, plus essential tips for new residents on consults and H&Ps. Designed for educational purposes for medical students and residents.

Internal medicine managementAnemia and lab abnormalitiesChronic condition management (e.g., AIDS/HIV)
🏥 Medical
(14)
free
9
MAKE - Product reference tool
MAKE - Product reference tool
MAKE - Product reference tool
Unearth and explore top apps
Free

This platform serves as a reference and discussion hub for industry apps, designed for creators of all levels. It facilitates the exchange of app flows and user experiences, offers AI-powered insights, and helps users discover new mobile applications.

App reference and discussionCollaborative creation toolsAI assistant for insights
🌐 Social Networking
(1)
freemium
10
China Arbitration Reference
China Arbitration Reference
China Arbitration Reference
Rules, Fees & Deadlines
Free
🔍 Reference
(0)
11
DarkRef - Art Reference Board
DarkRef - Art Reference Board
DarkRef - Art Reference Board
Reference board for artists
Free

Organize your visual inspiration with images, GIFs, and notes. This app offers a free, intuitive platform for artists to manage references across all devices, with optional cloud sync for seamless backup and access.

Unlimited boards and imagesImage and GIF supportNotes and annotations
🎨 Graphics & Design
(4)
freemium
12
Audubon Bird Guide
Audubon Bird Guide
Audubon Bird Guide
Identify over 800 bird species
Free

Identify North American birds with this comprehensive field guide. Features include a bird ID tool based on observations, detailed species information with photos and audio, and a personal sightings log. Discover nearby birding locations and connect with conservation efforts.

Bird identification toolDetailed species profilesBird song and call audio
🔍 Reference
(4.5K)
free with in-app purchases
13
STR Quick-Reference App
STR Quick-Reference App
STR Quick-Reference App
by Stand to Reason
Free

This app provides summaries of key topics in Christian apologetics, ethics, and worldviews. It uses text and video to equip users for thoughtful conversations from a classical Christian perspective. Access information on important life issues.

Christian apologetics summariesWorldview analysisEthics discussions
📚 Education
(27)
free
14
WordReference Dictionary
WordReference Dictionary
WordReference Dictionary
by WordReference.com, LLC
Free

Access a comprehensive suite of dictionaries and translation tools for multiple languages. Explore conjugations, synonyms, and a vast forum with millions of answered questions. This app provides quick access to extensive language resources.

Extensive multilingual dictionariesVerb conjugatorsSynonym finder
🔍 Reference
(22)
ad-supported
15
Google Translate
Google Translate
Google Translate
Text, Photo & Voice Translator
Free

Instantly translate text, voice, and images between hundreds of languages. Features include offline translation, real-time conversation translation, and the ability to save frequently used phrases.

Text translationOffline translationInstant camera translation
🔍 Reference
(84K)
free with in-app purchases
16
Mosby's Drug Reference
Mosby's Drug Reference
Mosby's Drug Reference
Over 5,000 Drug Listings
Free

This app provides healthcare professionals with comprehensive drug information, including actions, usage, dosage, interactions, and side effects. It emphasizes patient safety with Black Box Warnings, Safety Alerts, and information on life-threatening side effects. Features include custom notes, highlights, and quick search functionality.

Over 5,000 drug listingsBlack Box Warnings and Safety AlertsDrug action, usage, dosage, interactions, side effects
🏥 Medical
(235)
free with in-app purchases
17
Deep Reference
Deep Reference
Deep Reference
AI Encyclopedia Reader
Free
🔍 Reference
(0)
18
Every Reference - Bible Study
Every Reference - Bible Study
Every Reference - Bible Study
Commentaries, dictionaries
$2.99

Access a vast collection of Bible commentaries, dictionaries, and encyclopedias with over 20,000 linked Bible references. This app includes multiple Bibles in various languages and offers customizable text display. All content is available offline after download.

9000+ Dictionary/Encyclopedia entries20,000+ Bible reference linksMultiple Bibles included
🔍 Reference
(6)
paid
19
Refer A Friend App
Refer A Friend App
Refer A Friend App
Share & Earn from Referrals
Free

This app facilitates earning money by recommending trusted professionals to your network. Professionals pay only for completed jobs, while referrers earn a percentage of successful referrals. It offers in-app messaging, marketplace discovery, and performance analytics.

Earn money from successful referralsPay-per-completed-job for professionalsIn-app messaging
💼 Business
(8)
free
20
Excel Function Reference
Excel Function Reference
Excel Function Reference
Step by Step Formula Examples
Free

This app provides a comprehensive guide to Excel functions with step-by-step examples. It features smart search, name search, and concise descriptions for over 400 formulas. Users can easily share formula details and access essential functions for free.

Smart search for functionsSearch by function name and categoryConcise formula descriptions
💼 Business
(6)
free with in-app purchases

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FAQ about Reference App

What is the best reference app for iPhone?
Wikipedia tops our reference app ranking as of August 2026, with a 4.3-star average from 6.2K App Store ratings, and it's free to download.
Yes — 19 of the top reference app we rank are free to download, including Wikipedia and Dictionary.com: English Words.
Wikipedia has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 244+ reference app on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
This is the official application for Wikipedia, the world's largest free knowledge project. It provides access to over 60 million articles in nearly 300 languages, all ad-free and free of charge. You can use it to search for information, read articles, and even contribute to the encyclopedia.
Key features include ad-free access to a vast encyclopedia, search across 300 languages, a personalized feed for trending and breaking news, offline article saving, customizable reading themes and text sizes, map-based discovery of nearby places, and tools for contributing to Wikipedia.

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