Kindle wins on store size and automatic word logging, Kobo wins on native EPUB support and openness, and CrossPoint is the only one of the three built around reading a blended book the way it's meant to be read — dictionary lookups that show the word a blend replaced, and clipped words that land in your practice without retyping anything. Which one is "better" depends entirely on what you're putting on it.
Who each reader is actually for#
Kindle is the right call if most of what you read is bought, current, and in one of the languages Amazon sells widely — contemporary novels, bestsellers, anything you'd normally one-click. Vocabulary Builder logs every word you look up with the sentence it came from, with zero setup, which makes a plain novel into a passive word list. The cost is that the list stays on the device with no export button, and the text itself is locked. If you'd rather capture words outside any one book, saving vocabulary from any website works the same way no matter which reader you're holding.
Kobo is the right call if you already own EPUBs from more than one source — a personal library, review copies, public-domain downloads — and don't want to convert anything to read it. Its dictionary setup includes bilingual pairs you add yourself, and KOReader, an open-source reader with its own dictionary and catalog browser, can be installed on a Kobo by copying its files onto the device alongside the stock reader, unsupported by Kobo. That takes a bit more fiddling than either Kindle or CrossPoint asks for.
CrossPoint is the right call if you're reading LingoBlend's blended books specifically and want the whole loop: open the book, look up any blended word and see the original it replaced, clip the ones worth saving, and sync them into the app with a free account and the LingoBlend plugin, where they show up in the app's spaced-repetition games without typing a thing. It runs only on the devices it was built for — Xteink's X3, X4, X4 Classic and X4 Pro and a few other small e-ink readers — has no commercial store, and the workflow depends on which CrossPoint version is installed — more on that below.
The comparison#
| Kindle | Kobo | CrossPoint | |
|---|---|---|---|
| Store | Amazon's marketplace, split by country | Kobo's own store, plus anything you load yourself | None — a free public-domain library and OPDS catalog, no account needed |
| Formats | Own formats; EPUB needs Send to Kindle conversion | Native EPUB | Native EPUB |
| Dictionary | Built-in per installed language; Word Wise is English-titles only | Built-in, with bilingual pairs added from Settings | Built-in StarDict lookup — this is what the companion dictionary plugs into |
| Lookup | Long-press a word | Press and hold a word | Reader Menu → Look Up (one word, firmware 1.6.x) or press-and-hold for several words (1.7 / Nightly) |
| Vocabulary export | None official — Vocabulary Builder has no export button | Limited — highlights and annotations export, looked-up words don't | Clip writes to the SD card instantly; Sync clippings sends them to the LingoBlend app (free account + the LingoBlend plugin), up to 200 words a day |
| Blended books | Book only, after Send to Kindle conversion | Book only, natively | Full loop: book, companion dictionary, Clip, Sync clippings |
| Openness | Closed; purchased titles are DRM-protected | More open; EPUB native, and KOReader can be installed alongside the stock reader | Fully open-source firmware |
The DRM point#
A purchased Kindle book is DRM-protected, and Amazon removed the "Download & transfer via USB" option in February 2025, so there's no way to get the plain text out of a book you bought. That only affects books bought on Kindle — Send to Kindle still accepts EPUB, PDF, DOCX and TXT you already have in an open format, so a blended book you got from LingoBlend converts and reads fine. What DRM rules out is the reverse direction: you can't take a Kindle purchase and turn it into something else, including a blended edition of it. Kobo and CrossPoint don't have this problem for content you load yourself, because neither requires buying through a locked store to read a file.
What you get from LingoBlend on each#
The full loop — the book, its companion dictionary, Look Up showing the word a blend replaced, Clip, and Sync clippings into the app — only works on CrossPoint, and only the dictionary half is verified on CrossPoint's current stable release (1.6.5); Clip and Sync need CrossPoint 1.7 or a Nightly build.
On Kindle and Kobo you get the book only — the blended EPUB opens normally on both, through Send to Kindle conversion on Kindle and natively on Kobo — but not the companion dictionary: it's a StarDict file, and a Kindle only loads dictionaries in Amazon's own format, while a stock Kobo won't load it either. What works on Kobo, Kindle, PocketBook and phone apps covers the per-device steps and the KOReader question in more detail.
A plain recommendation#
- Reading something you bought, want the widest catalog: Kindle. Treat Vocabulary Builder as a free side-effect, not an export tool.
- You already own EPUBs from several places and like tinkering: Kobo, with its own dictionary settings and the option to run KOReader later.
- You want LingoBlend's blended books with lookups and clipped words flowing straight into practice: CrossPoint, on a reader that runs it, aware that Clip needs a Nightly build today.
- You just want to try one blended book with no setup: the glosses-above edition on whatever reader you already own — it needs no dictionary anywhere, though how the glosses themselves render depends on your reader.
A limitation worth stating plainly#
CrossPoint runs only on a short list of small e-ink readers, mostly Xteink's, it's far less mainstream than Kindle or Kobo, and it has no store or customer-support organization behind it — it's open-source firmware built by its own contributor community. The full clip-and-sync loop has been verified end to end on an X4 Pro; the same actions exist on the button-only X3 and X4 through the Reader Menu, but we haven't run the full loop on that hardware ourselves. On the Kobo side, the KOReader route means installing software Kobo does not support, and we have not confirmed our dictionary works there. None of this makes either reader a bad choice — it just means "it depends what you're optimizing for" is the honest answer, not a dodge.
The takeaway#
Pick the reader for the reading you're actually doing, not for the feature list. Kindle if you're buying mainstream books and want Vocabulary Builder's free word log. Kobo if you already own an EPUB library and like having a dictionary and the option to go further with KOReader. CrossPoint if you want LingoBlend's blended books with their companion dictionary and clipped words landing straight in your practice — that loop exists nowhere else today. Start with the free library on the e-reader page to see which one fits before committing to any single device.