Hikara vs Readwise: how books connect vs which lines you remember
Readwise collects your highlights from Kindle, Apple Books, Instapaper and more, and resurfaces them with spaced repetition in a Daily Review. Hikara is a reading tracker that uses AI to find how the books in your library connect. Readwise is about the sentences you saved; Hikara is about how whole books relate.
Use Readwise to sync and review your highlights. Use Hikara to track your reading and see how your books connect. Some readers use both.
Updated Readwise details checked By Hikara Team
Side-by-side comparison
| Criterion | Hikara | Readwise | Edge |
|---|---|---|---|
| Getting highlights in | Type them, or photograph the page | Syncs from Kindle, Apple Books, Kobo, Instapaper and more | |
| Reviewing highlights | One highlight a day in the app, weighted toward older ones | Daily Review by email and app, using spaced repetition | |
| Connections between books | Found by AI, labelled echo, challenge or bridge, scored 0–100 | No equivalent | |
| AI features | Vibe search, gap finder, Dialogues grounded in your highlights | Ghostreader in Reader: define terms, simplify text, ask a document questions | |
| Reading tracker | Statuses, sessions, streaks, goals | Not a reading tracker | |
| Read-later app | None | Reader, included with Readwise Full | |
| Price | Free plan; Basic $3.49/mo; Premium $6.99/mo | 30-day free trial; Lite $5.59/mo, Full $9.99/mo billed annually |
Where Hikara wins
- Finds connections between whole books, not just the lines you saved.
- A full reading tracker: statuses, sessions, streaks, goals and pace.
- Dialogues: talk to your books, with answers grounded in your own highlights.
- A free plan, and paid plans that cost less.
Where Readwise wins
- Highlight sync from Kindle, Apple Books, Kobo, Instapaper and more.
- A Daily Review built on spaced repetition, by email or in the app.
- Reader, a read-later and annotation app, is included with Full.
- Ghostreader, an AI assistant inside Reader.
When Readwise is the right choice
We're biased — Hikara is our product. Here's an honest list of when Readwise is genuinely the better fit, and you should pick it instead.
- Your reading life revolves around highlights.
- You want your Kindle or Apple Books highlights synced automatically.
- You want a spaced-repetition review of what you saved.
- You also read a lot of articles and want a read-later app.
Weighing more than two apps? See the best Readwise alternatives, ranked.
Frequently asked questions
Are Hikara and Readwise competitors?
Only partly. Readwise is about remembering the sentences you saved; Hikara is about tracking your reading and seeing how whole books connect. Some readers use both.
Can Hikara import my Readwise or Kindle highlights?
No. Hikara has no Readwise or Kindle highlight sync: you add highlights by typing them or photographing the page. If highlights are the centre of your reading, Readwise is the better tool for them.
Does Hikara do spaced repetition?
Not in Readwise's sense. Hikara shows one of your highlights each day on the Today tab, picked at random with older highlights weighted more heavily, but it doesn't schedule reviews.
Is Hikara cheaper than Readwise?
Hikara has a free plan, and Basic is $3.49/month. Readwise has a 30-day trial, then Full costs $9.99/month billed annually. They do different jobs, so compare what you'd actually use.
See how your own books connect
Import your Goodreads export or add books one by one, and Hikara starts finding the echoes, challenges and bridges between them. The free plan needs no card.