TBR Book Jar vs KRIZ
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TBR Book Jar
This app helps you decide what to read next with over 190 prompts and a customizable digital bookshelf. Track your reading progress, view stats, and personalize your virtual library.
- 190+ reading prompts
- Customizable digital bookshelf
- Page progress tracking
- Reading timer and speed tracking
- Reading stats and goals
- Goodreads import
- Dark mode support
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Can't decide what to read next? Reach into the jar. TBR Book Jar is the reading app BookTok has been waiting for — a digital TBR jar, a gorgeous customizable bookshelf, an AI book buddy, audiobook magic… and now the biggest thing we've ever shipped: a built-in community of readers. Book clubs, forums, a used-book marketplace, and your shelf synced to the web. Built by a reader who was tired of staring at the TBR pile — now with company. NEW — TBRTALK, YOUR READING COMMUNITY · Book clubs with their own themed rooms — join one or start your own · Forums for every bookish conversation, plus direct messages · A used-book marketplace: list your finished copies, browse everyone else's — buyers and sellers arrange everything directly · Wishlist a book and get alerted when someone lists a used copy · Every book gets its own page: reviews, ratings, clubs reading it, copies for sale · Your library and wishlist sync with tbrtalk.com — your shelf, on the web NEW — YOUR HOME DASHBOARD Pick up right where you left off: a continue-reading carousel, streaks and goals at a glance, quick doors to everything. AUDIOBOOK MODE Your paperbacks just learned to talk. Snap photos of any pages — they're transcribed and read aloud with karaoke-style highlighting that follows along. Studio Voices sound remarkably human and run entirely on your iPhone: downloaded once, private, offline. Have a DRM-free EPUB? Drop it in and listen to the whole book. THE JAR 190+ creative prompts across 17 categories. Tap to pick and let fate decide — or hit Mystery Book to pull randomly from your own shelf. DISCOVER An endless deck of book suggestions dealt from the genres you actually love. Swipe right to wishlist, left to pass — it quietly learns your taste. YOUR BOOKSHELVES Not a list — real bookshelves. Books stand as spines or face-out covers on wooden shelves, sized to their true cover shape. Stack them into piles, drag to rearrange, decorate with wallpapers, stickers and animated GIFs. Unlimited shelves, smart shelves that fill themselves, and a Wishlist shelf for the books you want next. BOOK BUDDY — YOUR AI READING COMPANION Give it a name, then ask for recommendations, chat about books, describe a vibe or "books like ___" — grounded in real, current titles and tuned to what's on your shelf. READING TIMER & FOCUS SCENES The timer is free for every reader. Go Pro and read beside a crackling campfire, rain on the window, ocean waves — seven looping nature scenes plus ambient sound. ADD BOOKS IN SECONDS Search millions of titles with auto-filled covers and summaries · scan a barcode or snap the cover · import your whole Goodreads library via CSV. TRACK & CELEBRATE Page progress, reading speed, ratings and reviews, streaks, a yearly goal ring, genre charts and an activity heatmap. FREE The whole community · 10 books on your shelf · unlimited wishlist · 30 prompts · reading tracker & timer · a daily taste of Book Buddy and page scanning PRO — Monthly, Yearly or Lifetime (start with a 14-day free trial) · Unlimited books & shelves · full Audiobook Mode · All 190+ prompts + custom prompts · Unlimited Book Buddy, Discover deck & smart wishlist · Stats, focus scenes & sounds, goals & reminders · Goodreads import · every wallpaper, theme & decoration Your TBR pile just got fun — and it brought friends. Reach in and start picking. Subscriptions auto-renew unless cancelled 24 hours before the period ends. Manage in App Store settings. Privacy: https://damobo.com/tbrbookjar/privacy Terms: https://apple.com/legal/internet-services/itunes/dev/stdeula/ Support: support@damobo.com
KRIZ
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KRIZ is a reading diary, not another book catalogue. A catalogue answers “what have I read”. A diary answers “what happened to me while I was reading it”. KRIZ is about the second one. Three sections instead of lists Past, present, future. A book lives through them in turn, as it should. A diary you assemble yourself Quotes, thoughts, questions, observations, characters, things to explore after the book. Switch on only the blocks you need — the rest stays out of the way. Nothing is required: marking a book as finished is enough. Search your own words Remember the quote but not the book? A few words will find it. A book is added in a second By title, by author, or by scanning the barcode on the cover. What to read next The randomiser picks from the books you saved, from your shelf, or offers something new — from a selection of two thousand books with covers, descriptions and readers’ ratings. Cards for stories Eight ready-made looks. You tick what to show — cover, quote, rating, dates — and the app composes the card. Month summaries How much you read, what you liked most, which book turned out the longest. A fortune for the day One short line — a reason to open the diary even on a busy day. Import from Goodreads and StoryGraph Ratings, reviews, dates and shelves come across with the books. Free forever The whole diary: any number of books, entries and shelves. Search through your own words, barcode scanner, sync between devices, import, light and dark themes, story cards. What came free stays free. The KRIZ subscription adds Quote scanner: photograph a page, the text is recognised and you can fix it before saving. Voice notes. Photos for a book. Ambient sounds: rain, a library, a café. Every card template and extra appearances. The first seven days are free. Your entries are yours The diary lives on your phone and works offline. An account is only for syncing between devices — and it is optional. Backups are saved as an ordinary file. Ukrainian, Russian, English, Greek.
Screenshots
Verdict
The clearest difference is update cadence: TBR Book Jar at every 4 days against KRIZ's every 3 weeks. KRIZ's advantage is iOS requirement (15.1 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. TBR Book Jar sells 4 in-app purchases, starting at $3.99 per month and KRIZ sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
TBR Book Jar ships an update every 4 days, KRIZ every 3 weeks. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.
| Parameter | TBR Book Jar | KRIZ |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 4 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 118 MB | 46 MB |
| Age rating | 4+ | 4+ |
| Developer | Christopher Mayberry | Kateryna Dimitrashko |
In-app purchases
TBR Book Jar
- Pro Monthly (One-Time Offer)$3.991 Month
- TBR Book Jar Pro Monthly$4.991 Month
- TBR Book Jar Pro Annual14 Days trial$29.991 Year
- TBR Book Jar Pro Lifetime$69.99
KRIZ
- KRIZ Full7 Days trial$1.991 Month
- KRIZ Full7 Days trial$17.991 Year









