Reference

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Top 100 Paid Reference Apps

Sky Guide: View Stars Night or Day - Fifth Star Labs LLC
Sky Guide: View Stars Night or Day – Fifth Star Labs LLC
no app image

Rank: 1

Category: Reference

Released: 2013-05-06

Price: $1.99

The Night Sky™ - iCandi Apps
The Night Sky™ – iCandi Apps
no app image

Rank: 2

Category: Reference

Released: 2011-11-01

Price: $0.99

Speak & Translate - Live Voice and Text Translator with Speech and Dictionary - Apalon Apps
Speak & Translate - Live Voice and Text Translator with Speech and Dictionary – Apalon Apps
no app image

Rank: 3

Category: Reference

Released: 2014-01-31

Price: $9.99

Dictionary.com Dictionary & Thesaurus Premium - Dictionary.com, LLC
Dictionary.com Dictionary & Thesaurus Premium – Dictionary.com, LLC
no app image

Rank: 4

Category: Reference

Released: 2010-08-10

Price: $2.99

iHandy Translator Pro - iHandy Inc.
iHandy Translator Pro – iHandy Inc.
no app image

Rank: 5

Category: Reference

Released: 2010-12-10

Price: $1.99

WolframAlpha - Wolfram Group LLC
WolframAlpha – Wolfram Group LLC
no app image

Rank: 6

Category: Reference

Released: 2009-10-18

Price: $2.99

Night Sky Pro™ - iCandi Apps
Night Sky Pro™ – iCandi Apps
no app image

Rank: 7

Category: Reference

Released: 2014-10-30

Price: $1.99

iBird Pro Guide to Birds - Mitch Waite Group
iBird Pro Guide to Birds – Mitch Waite Group
no app image

Rank: 8

Category: Reference

Released: 2009-03-26

Price: $14.99

Bird Song Id USA Automatic Recognition and Reference - Songs and Calls of East America - Isoperla
Bird Song Id USA Automatic Recognition and Reference – Songs and Calls of East America – Isoperla
no app image

Rank: 9

Category: Reference

Released: 2013-08-05

Price: $4.99

e-Sword LT: Bible Study on the Go - Rick Meyers
e-Sword LT: Bible Study on the Go – Rick Meyers
no app image

Rank: 10

Category: Reference

Released: 2013-04-20

Price: $1.99

Chirp! Bird Song USA + - iSpiny
Chirp! Bird Song USA + – iSpiny
no app image

Rank: 11

Category: Reference

Released: 2010-04-01

Price: $3.99

The Sibley eGuide to the Birds of North America - mydigitalearth.com
The Sibley eGuide to the Birds of North America – mydigitalearth.com
no app image

Rank: 12

Category: Reference

Released: 2010-02-10

Price: $19.99

Merriam-Webster Dictionary & Thesaurus - Merriam-Webster, Inc.
Merriam-Webster Dictionary & Thesaurus – Merriam-Webster, Inc.
no app image

Rank: 13

Category: Reference

Released: 2011-12-08

Price: $3.99

Animated Knots by Grog - Grog LLC
Animated Knots by Grog – Grog LLC
no app image

Rank: 14

Category: Reference

Released: 2010-06-24

Price: $4.99

Legal Heat - 50 State Guide to Firearm Law - National Training Solutions, Inc.
Legal Heat – 50 State Guide to Firearm Law – National Training Solutions, Inc.
no app image

Rank: 15

Category: Reference

Released: 2012-02-09

Price: $0.99

Knots 3D - Nynix
Knots 3D – Nynix
no app image

Rank: 16

Category: Reference

Released: 2011-09-09

Price: $0.99

National Geographic World Atlas - National Geographic Society
National Geographic World Atlas – National Geographic Society
no app image

Rank: 17

Category: Reference

Released: 2010-04-01

Price: $1.99

SkyView® Satellite Guide: Find space junk, space stations, and more day or night - Terminal Eleven LLC
SkyView® Satellite Guide: Find space junk, space stations, and more day or night – Terminal Eleven LLC
no app image

Rank: 18

Category: Reference

Released: 2013-09-06

Price: $3.99

Dictionary!! - Farlex, Inc.
Dictionary!! – Farlex, Inc.
no app image

Rank: 19

Category: Reference

Released: 2012-04-30

Price: $3.99

iQuran - Guided Ways Innovations Ltd
iQuran – Guided Ways Innovations Ltd
no app image

Rank: 20

Category: Reference

Released: 2008-07-18

Price: $1.99

SCRABBLE Dictionary - Merriam-Webster, Inc.
SCRABBLE Dictionary – Merriam-Webster, Inc.
no app image

Rank: 21

Category: Reference

Released: 2012-08-20

Price: $4.99

iBird Ultimate Guide to Birds - Mitch Waite Group
iBird Ultimate Guide to Birds – Mitch Waite Group
no app image

Rank: 22

Category: Reference

Released: 2014-05-15

Price: $19.99

National Geographic Birds: Field Guide to North America - National Geographic Society
National Geographic Birds: Field Guide to North America – National Geographic Society
no app image

Rank: 23

Category: Reference

Released: 2009-05-10

Price: $9.99

CCW – Concealed Carry 50 State Guide - Workman Consulting LLC
CCW – Concealed Carry 50 State Guide – Workman Consulting LLC
no app image

Rank: 24

Category: Reference

Released: 2011-06-16

Price: $1.99

Wolfram Sun Exposure Reference App - Wolfram Group LLC
Wolfram Sun Exposure Reference App – Wolfram Group LLC
no app image

Rank: 25

Category: Reference

Released: 2011-08-01

Price: $0.99

Night Sky 2 - iCandi Apps
Night Sky 2 – iCandi Apps
no app image

Rank: 26

Category: Reference

Released: 2013-08-01

Price: $3.99

Central Park Entire - Great Hill Productions
Central Park Entire – Great Hill Productions
no app image

Rank: 27

Category: Reference

Released: 2013-10-16

Price: $2.99

Furniture Setups Pro and Skin Stealer for Minecraft Game Textures Skins - Seus Corp Ltd.
Furniture Setups Pro and Skin Stealer for Minecraft Game Textures Skins – Seus Corp Ltd.
no app image

Rank: 28

Category: Reference

Released: 2012-10-26

Price: $0.99

U.S. Army Ranger Handbook (SH 21-76) - ForceReadiness.com
U.S. Army Ranger Handbook (SH 21-76) – ForceReadiness.com
no app image

Rank: 29

Category: Reference

Released: 2011-06-24

Price: $1.99

World Map 2015 - Appventions
World Map 2015 – Appventions
no app image

Rank: 30

Category: Reference

Released: 2010-01-19

Price: $0.99

Best Games for GBA - Taiki Araki
Best Games for GBA – Taiki Araki
no app image

Rank: 31

Category: Reference

Released: 2014-05-17

Price: $1.99

Houses for Minecraft - Advanced Building Guide - Jim Hoskins
Houses for Minecraft – Advanced Building Guide – Jim Hoskins
no app image

Rank: 32

Category: Reference

Released: 2013-04-04

Price: $0.99

Audubon Birds Pro - Green Mountain Digital
Audubon Birds Pro – Green Mountain Digital
no app image

Rank: 33

Category: Reference

Released: 2009-10-11

Price: $9.99

Audubon Guides Box Set - Birds, Tree, Wildflowers &  Mammals - Green Mountain Digital
Audubon Guides Box Set – Birds, Tree, Wildflowers & Mammals – Green Mountain Digital
no app image

Rank: 34

Category: Reference

Released: 2009-11-02

Price: $14.99

BirdLog North America - Birds In The Hand, LLC
BirdLog North America – Birds In The Hand, LLC
no app image

Rank: 35

Category: Reference

Released: 2012-03-22

Price: $9.99

Mall of America - Guide and Directory - Raging Coders
Mall of America – Guide and Directory – Raging Coders
no app image

Rank: 36

Category: Reference

Released: 2013-02-02

Price: $0.99

Tractor Guide - Rachel Gingell
Tractor Guide – Rachel Gingell
no app image

Rank: 37

Category: Reference

Released: 2014-01-22

Price: $0.99

iMissal Catholic (Mass Reading, Calendar, Lectionary) - Cantcha, Inc.
iMissal Catholic (Mass Reading, Calendar, Lectionary) – Cantcha, Inc.
no app image

Rank: 38

Category: Reference

Released: 2009-03-26

Price: $4.99

Worldictionary - Instant Translation & Search - Penpower Technology Ltd.
Worldictionary – Instant Translation & Search – Penpower Technology Ltd.
no app image

Rank: 39

Category: Reference

Released: 2011-04-08

Price: $2.99

Pocket Rally Obedience - Blue Ribbon Dogs
Pocket Rally Obedience – Blue Ribbon Dogs
no app image

Rank: 40

Category: Reference

Released: 2013-09-17

Price: $1.99

GUIDE 360 for iOS 7 & iPhone 5s Users - Guide, Tips & Tricks Videos, News ALL in ONE! - Karnivall
GUIDE 360 for iOS 7 & iPhone 5s Users – Guide, Tips & Tricks Videos, News ALL in ONE! – Karnivall
no app image

Rank: 41

Category: Reference

Released: 2013-10-31

Price: $0.99

CoinBook Pro: A Catalog of U.S. Coins - an app about dollar, cash & coin - Adam Meszaros
CoinBook Pro: A Catalog of U.S. Coins – an app about dollar, cash & coin – Adam Meszaros
no app image

Rank: 42

Category: Reference

Released: 2011-10-28

Price: $3.99

Saint A Day - Cantcha, Inc.
Saint A Day – Cantcha, Inc.
no app image

Rank: 43

Category: Reference

Released: 2010-02-15

Price: $1.99

Law Dictionary: FT Black
Law Dictionary: FT Black’s Law Dictionary 2nd Ed – Grapeville, LLC.
no app image

Rank: 44

Category: Reference

Released: 2012-01-04

Price: $1.99

Drill and Tap Tool - Through Hole and Thread Tapping Charts - Drills in Inch Imperial and Metric Sizes - Chewy Applications
Drill and Tap Tool – Through Hole and Thread Tapping Charts – Drills in Inch Imperial and Metric Sizes – Chewy Applications
no app image

Rank: 45

Category: Reference

Released: 2011-03-14

Price: $1.99

Pilot Handbook - Double Dog Studios
Pilot Handbook – Double Dog Studios
no app image

Rank: 46

Category: Reference

Released: 2009-12-19

Price: $2.99

iPhemeris - Clifford Ribaudo
iPhemeris – Clifford Ribaudo
no app image

Rank: 47

Category: Reference

Released: 2008-11-12

Price: $14.99

Aratools Arabic-English Dictionary - Aratools Language Technology
Aratools Arabic-English Dictionary – Aratools Language Technology
no app image

Rank: 48

Category: Reference

Released: 2009-09-08

Price: $14.99

The World Factbook 2015 - jDictionary Mobile
The World Factbook 2015 – jDictionary Mobile
no app image

Rank: 49

Category: Reference

Released: 2014-02-27

Price: $1.99

TruthPacker - 47 Primes
TruthPacker – 47 Primes
no app image

Rank: 50

Category: Reference

Released: 2011-01-12

Price: $2.99

Surgical Instrument Quiz - James Nideffer
Surgical Instrument Quiz – James Nideffer
no app image

Rank: 51

Category: Reference

Released: 2013-02-01

Price: $1.99

New Oxford American Dictionary with Audio - Mobile Systems
New Oxford American Dictionary with Audio – Mobile Systems
no app image

Rank: 52

Category: Reference

Released: 2013-07-30

Price: $14.99

Army Engineer Guide - Polemics Applications LLC
Army Engineer Guide – Polemics Applications LLC
no app image

Rank: 53

Category: Reference

Released: 2012-10-03

Price: $0.99

Police Codes! - ShaneB
Police Codes! – ShaneB
no app image

Rank: 54

Category: Reference

Released: 2012-03-07

Price: $0.99

Hotlines Egypt - Nazzelha
Hotlines Egypt – Nazzelha
no app image

Rank: 55

Category: Reference

Released: 2011-03-17

Price: $0.99

Semaphore - mindwarrior
Semaphore – mindwarrior
no app image

Rank: 56

Category: Reference

Released: 2010-01-05

Price: $2.99

Comprehensive Level Guide for Geometry Dash - Yogesh Tanwar
Comprehensive Level Guide for Geometry Dash – Yogesh Tanwar
no app image

Rank: 57

Category: Reference

Released: 2014-12-04

Price: $0.99

Collins Deluxe German-English Translator Dictionary - DioDict - DIOTEK Co., Ltd.
Collins Deluxe German-English Translator Dictionary – DioDict – DIOTEK Co., Ltd.
no app image

Rank: 58

Category: Reference

Released: 2009-11-13

Price: $22.99

Tire Sizes - Tables to Calculate Percentage Difference in Tire & Wheel Sizes - Chewy Applications
Tire Sizes – Tables to Calculate Percentage Difference in Tire & Wheel Sizes – Chewy Applications
no app image

Rank: 59

Category: Reference

Released: 2013-11-23

Price: $1.99

Greenhouse Scout - Gorges, Inc.
Greenhouse Scout – Gorges, Inc.
no app image

Rank: 60

Category: Reference

Released: 2014-06-09

Price: $9.99

iKnow Birds 2 PRO - The Field Guide to the Birds of Europe - NATURE MOBILE G.m.b.H.
iKnow Birds 2 PRO – The Field Guide to the Birds of Europe – NATURE MOBILE G.m.b.H.
no app image

Rank: 61

Category: Reference

Released: 2014-10-31

Price: $10.99

Pocket Welder - 12Strong Ltd
Pocket Welder – 12Strong Ltd
no app image

Rank: 62

Category: Reference

Released: 2015-01-17

Price: $3.99

iBukhari - Adil Ben Moussa
iBukhari – Adil Ben Moussa
no app image

Rank: 63

Category: Reference

Released: 2012-07-16

Price: $0.99

Prayer 2000+ Catholic Prayers by DivineOffice.org - Surgeworks, Inc.
Prayer 2000+ Catholic Prayers by DivineOffice.org – Surgeworks, Inc.
no app image

Rank: 64

Category: Reference

Released: 2009-03-26

Price: $2.99

Posted! - Carry List Anti-Gun Locations - Workman Consulting LLC
Posted! – Carry List Anti-Gun Locations – Workman Consulting LLC
no app image

Rank: 65

Category: Reference

Released: 2012-06-28

Price: $0.99

Strong
Strong’s Concordance – Orion Systems
no app image

Rank: 66

Category: Reference

Released: 2010-12-08

Price: $4.99

American Almanac - Guide for Farmers & Sky Watchers - Tod LLC
American Almanac – Guide for Farmers & Sky Watchers – Tod LLC
no app image

Rank: 67

Category: Reference

Released: 2013-09-07

Price: $2.99

Audubon Wildflowers - Green Mountain Digital
Audubon Wildflowers – Green Mountain Digital
no app image

Rank: 68

Category: Reference

Released: 2009-10-27

Price: $4.99

Landscaper
Landscaper’s Companion – Plant & Gardening Reference Guide – Stevenson Software, LLC
no app image

Rank: 69

Category: Reference

Released: 2009-10-01

Price: $4.99

space junk amateur - Cass Everitt
space junk amateur – Cass Everitt
no app image

Rank: 70

Category: Reference

Released: 2012-04-02

Price: $0.99

Lake Lanier Navigator - JumpBall Studios, LLC
Lake Lanier Navigator – JumpBall Studios, LLC
no app image

Rank: 71

Category: Reference

Released: 2012-06-19

Price: $0.99

Peterson Birds — A Field Guide to Birds of North America - gWhiz, LLC
Peterson Birds — A Field Guide to Birds of North America – gWhiz, LLC
no app image

Rank: 72

Category: Reference

Released: 2010-12-17

Price: $14.99

Mods Pro for Minecraft - Complete Guides, Recipes and Tips - Anatoli Rastorgouev
Mods Pro for Minecraft – Complete Guides, Recipes and Tips – Anatoli Rastorgouev
no app image

Rank: 73

Category: Reference

Released: 2015-02-26

Price: $1.99

The CIA World Factbook - realazy
The CIA World Factbook – realazy
no app image

Rank: 74

Category: Reference

Released: 2011-01-07

Price: $1.99

NJLaw - Title 39 - Motor Vehicle - Kaboserv.com Development
NJLaw – Title 39 – Motor Vehicle – Kaboserv.com Development
no app image

Rank: 75

Category: Reference

Released: 2012-02-09

Price: $2.99

my_Water - Pass Time Software
my_Water – Pass Time Software
no app image

Rank: 76

Category: Reference

Released: 2014-05-09

Price: $0.99

ESV Study Bible + - Crossway
ESV Study Bible + – Crossway
no app image

Rank: 77

Category: Reference

Released: 2010-07-29

Price: $17.99

St. Josemaria - EBSolutions
St. Josemaria – EBSolutions
no app image

Rank: 78

Category: Reference

Released: 2009-10-01

Price: $14.99

Scourby YouBible - Litchfield Associates Ltd, Inc
Scourby YouBible – Litchfield Associates Ltd, Inc
no app image

Rank: 79

Category: Reference

Released: 2012-05-16

Price: $19.99

Holy Rosary Audio - HANDECH INTERNATIONAL LIMITED
Holy Rosary Audio – HANDECH INTERNATIONAL LIMITED
no app image

Rank: 80

Category: Reference

Released: 2009-01-23

Price: $0.99

Bible Verses: Pro - Skol Games LLC
Bible Verses: Pro – Skol Games LLC
no app image

Rank: 81

Category: Reference

Released: 2013-05-03

Price: $0.99

Video Searcher & Downloader Pro – Download Movies, Films & funny Videos from Web and Play instantly - Gang Li
Video Searcher & Downloader Pro – Download Movies, Films & funny Videos from Web and Play instantly – Gang Li
no app image

Rank: 82

Category: Reference

Released: 2014-03-17

Price: $2.99

Cell Tracker - for Mobile Locator and Number tracker Best app - Abhay Vala
Cell Tracker – for Mobile Locator and Number tracker Best app – Abhay Vala
no app image

Rank: 83

Category: Reference

Released: 2015-01-07

Price: $7.99

FaSoLa Minutes - Mark Godfrey
FaSoLa Minutes – Mark Godfrey
no app image

Rank: 84

Category: Reference

Released: 2013-06-11

Price: $4.99

iCorps: Pocket Reference - Dunn-Carabali LLC
iCorps: Pocket Reference – Dunn-Carabali LLC
no app image

Rank: 85

Category: Reference

Released: 2009-05-20

Price: $1.99

Block Iron Robot 3D Model and Skins for minecraft - Patyi Kati
Block Iron Robot 3D Model and Skins for minecraft – Patyi Kati
no app image

Rank: 86

Category: Reference

Released: 2014-11-12

Price: $0.99

Quran Majeed + Azan Prayer Times Alarms - PakData
Quran Majeed + Azan Prayer Times Alarms – PakData
no app image

Rank: 87

Category: Reference

Released: 2010-04-06

Price: $4.99

Japanese - renzo Inc.
Japanese – renzo Inc.
no app image

Rank: 88

Category: Reference

Released: 2008-09-15

Price: $6.99

Fighter Verses - memorize bible verses / scripture memory - Children Desiring God
Fighter Verses – memorize bible verses / scripture memory – Children Desiring God
no app image

Rank: 89

Category: Reference

Released: 2010-12-23

Price: $2.99

Full Moon Finder - Yankee Publishing Inc
Full Moon Finder – Yankee Publishing Inc
no app image

Rank: 90

Category: Reference

Released: 2012-03-16

Price: $0.99

Matthew Henry Commentary - George Dimidik
Matthew Henry Commentary – George Dimidik
no app image

Rank: 91

Category: Reference

Released: 2010-01-02

Price: $1.99

Bible Memory: Remember Me - Hippo Mobile Solutions
Bible Memory: Remember Me – Hippo Mobile Solutions
no app image

Rank: 92

Category: Reference

Released: 2012-02-28

Price: $2.99

LDS Temples Pro - Jeffrey Martin
LDS Temples Pro – Jeffrey Martin
no app image

Rank: 93

Category: Reference

Released: 2013-04-13

Price: $0.99

Verses - Bible Memory - Verses, Ltd. Co.
Verses – Bible Memory – Verses, Ltd. Co.
no app image

Rank: 94

Category: Reference

Released: 2014-11-20

Price: $4.99

Tree Identifier - CleverMatrix Ltd
Tree Identifier – CleverMatrix Ltd
no app image

Rank: 95

Category: Reference

Released: 2010-06-30

Price: $1.99

Baby Names Genius - Intelligent Name Finder - Health & Parenting Ltd
Baby Names Genius – Intelligent Name Finder – Health & Parenting Ltd
no app image

Rank: 96

Category: Reference

Released: 2015-01-28

Price: $1.99

WordBook - English Dictionary and Thesaurus - TranCreative Software
WordBook – English Dictionary and Thesaurus – TranCreative Software
no app image

Rank: 97

Category: Reference

Released: 2008-09-05

Price: $1.99

Military Ranks + - Bizpo
Military Ranks + – Bizpo
no app image

Rank: 98

Category: Reference

Released: 2010-12-16

Price: $0.99

Text Translator - Rickey Nguyen
Text Translator – Rickey Nguyen
no app image

Rank: 99

Category: Reference

Released: 2010-12-11

Price: $1.99

Finger-Print Camera Security with Touch ID & Secret Pattern Unlock Protect-ion - Oliver Saylor
Finger-Print Camera Security with Touch ID & Secret Pattern Unlock Protect-ion – Oliver Saylor
no app image

Rank: 100

Category: Reference

Released: 2014-12-29

Price: $1.99