The 300 PPI display is crisp and sharp. The front light is impressive and uniform, considering the larger eight-inch display, and compares well to the Paperwhite (see comparison pictures between the Aura One and Kindle Paperwhite).
An innovative feature, since followed by Tolino with its Vision 4 HD, is Kobo’s ‘Comfort Light’. In the words of Kobo, the Aura One “senses how much light is available, and can automatically adjust the brightness level for you. It can also change the colour of the light”. The auto-brightness light sensor is not new, with Amazon introducing the same feature with Kindle Voyage. What makes ‘Comfort Light’ innovative is the ability to change the colour of the front light to match the time of day. This feature is similar to blue light filters that many vendors, including Amazon, release with their tablets. I personally turn off the front-light when using an e-reader – to avoid any light emission – but it is a useful feature to ease eye strain for users that read with the front-light on.
Battery life is a negative point. I would estimate the battery life, with both WiFi and front-light turned off, to be between Amazon’s Paperwhite and Android e-readers. The Icarus XL that I reviewed, for example, required a charge within three days of regular use. From my experience, the Aura One has superior battery life compared to the Icarus XL but is behind the Paperwhite.
When the Kobo Aura One was released, many users reported problems with excessive battery drain in standby mode or when syncing the device. However, a number of updates were since rolled-out and these helped with the battery problems. A problem I noticed – a possible firmware bug – is a sudden ten percent drop in the battery when reading – possibly due to background tasks running –and so you need to be mindful that the device is not always reporting the correct battery state. A positive is that the Aura One re-charges quick.
Overall, Kobo clearly put serious thought and consideration with the Aura One’s hardware design and development. The front-light is impressive and uniform for its larger size – far better than the Icarus XL – and the display quality compares well to Amazon’s Kindle Paperwhite. Also, the device, according to Kobo, is water-proof for up to 60 minutes in up to two meters of water.
|Comparison between Amazon's Kindle Paperwhite & Kobo Aura One (click to enlarge)|
|Light uniformity comparison between the Kobo Aura One and Kindle Paperwhite (click to enlarge)|
|Kobo Aura One Comfort Light set at maximum (the light incrementally increases to this reddish/orange shade, according to time of day, when set to auto)|
Nickel – Kobo’s operating system – feels under-developed. First, I will state the positives with Nickel, followed by some problems that I experienced:
(1) Enhanced typographical options: In comparison to Amazon, Kobo offers some extra typographical options. The user is able to add fonts and change both font weight and text alignment. However, changing font weight, without patching the firmware, is not available with sideloaded fonts.
(2) Pocket & Overdrive integration: It is possible for users to sync their saved articles via Pocket integration, to then read on their device. OverDrive integration allows the user to borrow e-books from their local public library to read on the Aura One.
(1) Amazon, understandably, due to scale and size difference, offer superior cloud services. For example, with all Kindle devices, the user is able to sync their personal e-books (this includes bookmarks, notes and highlights). Further, when the user emails a document to their Kindle it is then available through the Amazon cloud drive. Kobo, with some consideration, could offer similar services through integrating Nickel with external cloud service providers, e.g. Dropbox. Kobo already allows the user to send and sync online articles via Pocket integration and so further integration with other services is a viable option.
(2) PDF support is poor: Kobo, similar to Amazon and Barnes & Noble, aim to tie their users to their own e-store. The idea of PDF support, considering this aim, is an afterthought. Amazon, in contrast, considers PDF support and offers good features, e.g., highlighting, taking notes, translation and increasing PDF contrast. While Amazon’s range of Kindle e-readers may be used as a viable PDF e-reader this is not the case with Kobo. Nickel’s PDF software is, at most, a basic viewer, with no way to interact with the text. There is no possibility to highlight or make annotations and both scrolling to navigate and pinch to zoom are erratic. Another problem is the lack of tap to scroll - to scroll the user needs to drag down the screen; this is cumbersome and slow with E-Ink.
(3) Problems with EPUB rendering: Kobo’s e-books come in their own propriety format – KEPUB. KEPUB books render well and are responsive to changes in margins, line spacing and offer further typographical options. However, with EPUB e-books, surprisingly, considering KEPUB is based on EPUB, the Aura One rendering is poor. Basic settings, e.g., margins and line spacing, are not responsive to changes in reader settings. This poor EPUB rendering means it would be better to convert side-loaded e-books to Kobo’s native KEPUB format via Calibre – this isn’t a problem with a few e-books but those with large libraries may find the process a hassle. Amazon, adopt a propriety format of MOBI, with their own e-books, but you still get near identical support with side-loaded MOBI e-books. Of course, Amazon adopting MOBI and not supporting EPUB is a definite negative.
(4) No direct way to export notes and highlights: There is no way to export personal highlights and annotations or to store the exported content online. Amazon, in comparison, with both personal and purchased books, via their Kindle Application, allows users to export their highlights and annotations to Evernote or via email. Further, there is the option to create flashcards for revision. To support similar features, it is possible for Kobo to develop a partnership, similar to Pocket, with Evernote. The partnership would then allow the user to store a notebook of their annotations and highlights in the cloud via Evernote integration. Established Android e-reader applications – for example, Moon Reader and Bookari Reader – allow users to export their annotations to their favourite note-taking application.
(5) Forced header and footer: By default, there is no way to disable the header or footer – both take up a portion of screen estate. It is possible to add a patch to disable both header and footer but the full-screen patch, sometimes, cuts the text at the edge of an e-book. The issue with a header and footer, in my opinion, substantiates the central problem with Nickel – an operating system with some standout features, e.g., Pocket, Over-Drive integration and extra typographical options, but with under-developed and limited e-reading features.
(6) Navigating device folders: This feature is neglected by both Kobo and Amazon. It is possible to organise your sideloaded through folders but there is no option to navigate these folders on the device. Kobo allows the user to create collections, to categorise both purchased and sideloaded books. However, unlike Amazon, Kobo only syncs purchased books to the created collection.
(7) Highlighting text is cumbersome and you need to be careful when dragging to select the required passage. Further, there is some lag when entering text for annotations.
I think the major problem with Nickel is that it was designed primarily to support purchased Kobo e-books and is directed at leisurely reading. Users who wish to use a Kobo device as an all-round e-reader, to manage with Kobo and purchased e-books, will find the device’s firmware limiting. Many features, noted above, are easily integrated into Nickel but it seems that Kobo’s views their primary goal to sell fiction e-books (similar observations may be applied to other vendors).
Unfortunately, due to poor PDF support, installing KOReader is a necessity if the user requires a functional and feature rich PDF reader. Below are some issues to consider with KOReader:
(1) Battery life in KOReader: Compared to Nickel, KOReader is not yet optimised with the Aura One. In comparison to Nickel, and this applies to PDF reading, I noticed the battery drains quicker. In other words, expect battery life to be reduced if you intend to use KOReader regularly. However, there are regular nightly releases of KOReader and battery life continues to be improved. If you are willing to use KOReader then, in my opinion, it is the best PDF reader, at the moment, available for E-Ink.
(2) Central PDF features work well in KOReader: PDF text recognition, highlighting, annotation, cropping, increasing contrast and touch to scroll all work well with the Aura One. Also, compared to Nickel, PDF rendering speed is much better. I personally use KOReader exclusively as a PDF reader and export my annotations offline to the device’s storage. Thus, I haven’t tried more advanced features.
(3) The installation process is not difficult but it is not for the novice user – anything that goes wrong with the e-reader, during the installation process, may void the device’s warranty. I would prefer if Kobo offered a viable PDF reader to avoid third-party applications but, at the moment, it is only the option for users that want more from the Aura One.
Overall, if you are looking for a larger e-reader then the Aura One is the one to choose. Smaller vendors, e.g., Onyx and Boyue re-branded e-readers, do not match Kobo for hardware quality. Yes, these e-readers offer greater versatility with Android pre-installed but usually the screen quality is sub-par in comparison to the Kobo Aura One – an e-reader is defined by its display quality. At this time, in the small world of larger e-readers, Kobo Aura One is the best option. Fortunately, due to the KOReader project, the user can get more from the Aura One, despite the limitations of Nickel.
Enhanced typographical options
Pocket and Overdrive integration
Impressive and uniform lighting for a 7.8 inch device
Comfort Light is an innovative feature
Relatively open, with the possibility to install third-party software and patches
Restricted software features
Poor PDF support
Slow PDF rendering
Poor EPUB rendering
Sub-par battery life for an e-reader