Reader Rocket Review Our evaluation of Aura HD vs DX

Display

How do the screens stack up?

Aura HD
10.0
Kindle DX
7.5
Resolution, pixel density and Screen size

Bookstore

How good is the supporting ecosystem?

Aura HD
8.6
Kindle DX
10.0
e-bookstore size, average NYT best sellers price, NYT's top selling titles and 4 more

Performance

How responsive and how long does the e-reader last?

Aura HD
5.1
Kindle DX
1.8
Battery life

Reviews

How do our trusted review sites rank these products?

Aura HD
n.d.
Kindle DX
5.7
Reviews from techradar.com

Reader Rocket Score

Display, Bookstore, Performance and Reviews

Aura HD
7.9
Kindle DX
6.3

Winner
Kobo Aura HD 

Reader Rocket recommends the Kobo Aura HD  based on its display and performance.

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Differences What are the advantages of each

Front view of Kobo Aura HD

Reasons to consider the
Kobo Aura HD

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Has Wi-Fi connectivity 802.11b/g/n vs None Most E-Readers have a Wi-Fi connectivity; download books from device or surf the web
Has a built-in light ComfortLight vs None Very few E-Readers have a built-in light
Much lighter weight 240 g vs 536 g 2.2x lighter weight
Expandable memory microSD (up to 32GB) vs None About half of E-Readers have an expansion slot ; store more content with a removable microSD card
Has a touchscreen Infrared vs None About half of E-Readers have a touchscreen; Fewer buttons, interact directly with menus
Much higher resolution screen 1440 x 1080 vs 1200 x 824 More than 55% higher resolution screen
Significantly longer battery life 28 hour vs 10 hour More than 2.8x longer battery life; read more between charges
Uses an open platform Yes vs No Somewhat common; can download ebooks from any source offering formats supported by device
More storage capacity 4 GB vs 3.3 GB More than 20% more storage capacity
Front view of Amazon Kindle DX

Reasons to consider the
Amazon Kindle DX

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Has an app store Kindle Store vs None Most E-Readers don't have an app store
Much bigger screen 9.7" vs 6.8" Around 45% bigger screen
Has cellular connectivity 3G vs None Very few E-Readers have cellular data ; download content anywhere with a cellular connection
Customer loyalty program Yes (Kindle Store) vs No (Kobo Books) About half of E-Readers support customer loyalty program
Has reader-to-reader lending Yes (Kindle Store) vs No (Kobo Books) Somewhat common; e-books can be loaned to a friend for a 14 day period; each e-book can only be loaned once
Significantly thinner 9.6 mm vs 11.7 mm Around 20% thinner ; easily slides into bags
Bigger bookstore 4 M book (Kindle Store) vs 3.2 M book (Kobo Books) Around 25% larger e-bookstore size; totalling paid & free books, this reader's bookstore offers a larger selection of reading material

Specifications Full list of technical specs

screen

Aura HD  vs
Kindle DX 
Screen resolution 1440 x 1080 1200 x 824
Screen size 6.8" 9.7"
Pixel density 264 ppi 150 ppi
Built-in light ComfortLight None
Screen type E-Ink E-Ink
Touchscreen Infrared None
Flashes screen black during page turns Yes Yes

features

Sync across multiple devices Yes Yes
Note taking Yes Yes
Web browser Yes Yes

storage

Internal storage 4 GB 3.3 GB
Expansion slot microSD (up to 32GB) None
Memory 4 GB 4 GB

form factor

Size 128 x 175 x 11.7 mm 183 x 264 x 9.6 mm
Weight 240 g 536 g
Interface touchscreen physical keyboard
Headphone jack No Yes

connectivity

Aura HD  vs
Kindle DX 
Input/Output port micro-USB micro-USB
Cellular data None 3G
Wi-Fi 802.11b/g/n None
Bluetooth connectivity No No

technical specs

Document support
DOC
PRC
AZW
PDF
TXT
RTF
ePUB
CBR
CBZ
HTML
MOBI
Image support
JPEG
PNG
TIFF
GIF
BMP

bookstore

Uses an open platform Yes No
Bookstore Kobo Books Kindle Store
EBookstore size 3.2 M book 4 M book
Free content free content 1.89 M books 2.5 M books
Customer loyalty program No Yes
Average NYT best sellers price $9.95 $9.24
Number of NYT top-selling titles offered+ 38 38
Reader-to-reader lending No Yes
Cloud storage Yes Yes
Reading apps iOS, Android, BlackBerry, PC and Mac iOS, Android, BlackBerry, Windows Phone, PC and Mac
Additional electronic offerings newspapers, magazines and comics/graphic novels newspapers, magazines, comics/graphic novels, textbooks, audio-books and blogs
Has retail store locations No No
Kobo Aura HD
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Amazon Kindle DX
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