Comparison

Book Tracker・Reading Log vs Stellary

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Book Tracker・Reading Log

Easily build and manage your personal library by adding books via search, ISBN scan, or manual entry. Track reading progress, set goals, and record notes. Enjoy a private reading experience with data stored locally.

Highlights
  • Build personal library
  • Add books by title, author, ISBN, or manual entry
  • Track reading status (Want to Read, Reading, Read, Did Not Finish)
  • Record ratings and notes
  • Set yearly reading goals
  • Built-in reading timer
  • Private, local data storage
Features
Read full description

Your private reading companion Build Your Library • Search by title or author and add a book in one tap. • Or scan its ISBN barcode, or type the details in yourself. • Want to Read · Reading · Read · Did Not Finish • Rating · Notes · Total pages Reach Your Goals • Set yearly targets and watch your progress grow. • Track reading sessions with a built-in timer. Private by Design • Your library, notes, and progress stay on your device. • No accounts required • Book search and ISBN lookup connect to Open Library. ISBN scanning, the reading timer, saved quotes, detailed charts and full backup require a subscription. Terms of Use: https://zeroplay.io/docs/legal/terms-of-service Privacy Policy: https://zeroplay.io/docs/legal/privacy-policy

About

Stellary

Features
Read full description

Stellary turns your reading life into something you can actually look at: a private night sky. Every book you finish becomes a star. Your favorite genres form glowing constellations. Keep reading, and you'll watch your own universe grow brighter, year after year. EFFORTLESS TRACKING • Start the reading timer, or log a session in seconds • Scan a barcode and any book is in your library before you've put it down • Bring your entire Goodreads history with you in one import • Build a streak day by day, and set a yearly goal that keeps pace with you A SKY THAT'S YOURS ALONE • The Atlas: a living star field made of every book you've finished • Each genre gets its own color and its own constellation • Earn zodiac constellations month by month • Discover your reader identity, an archetype that shifts as your taste does BETTER WITH FRIENDS • A calm, quiet feed of what your friends are reading. No likes to chase, no algorithm. • Share reviews with friends • Read together and discuss what you are reading with book clubs • See when a friend is reading right now GO INFINITE (optional subscription) • An unlimited library • Advanced statistics: your trends, records, and patterns • Custom shelves, organized your way • Streak protection that forgives a missed day • Ambient soundscapes to read to • Beautiful share cards for all your reading statistics • Recommendations from readers whose shelves look like yours Core reading tracking is free. Forever. Stellary works offline, syncs privately, and your library is never public. Stellary Infinite is an auto-renewing subscription (monthly, 6-month, or annual) with a 7-day free trial. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings. Terms of Use: https://stellary.cloud/terms Privacy Policy: https://stellary.cloud/privacy

Screenshots

Book Tracker・Reading Log4 screens
Stellary4 screens

Verdict

The call

The clearest difference is ads: Stellary at none against Book Tracker・Reading Log's shown. Stellary also leads on update cadence (every 6 weeks vs every 4 months). Book Tracker・Reading Log's advantage is device support (3 vs 1). On price, in-app purchases and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Book Tracker・Reading Log sells 2 in-app purchases, starting at $4.99 per 7 days and Stellary sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Book Tracker・Reading Log ships an update every 4 months, Stellary every 6 weeks. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 5 level
Book Tracker・Reading Log versus Stellary: the parameters behind the verdict, then further details
ParameterBook Tracker・Reading LogStellary
PriceFreeFree
Positive reviews0.0% of reviews—
Update frequencyEvery 4 monthsEvery 6 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better16.4
Further details — not scored
Size106 MB101 MB
Age rating4+4+
DeveloperZeroPlay Ltd.HAKAN MATTIAS BJORN OLANDERSSON

In-app purchases

2 purchases

Book Tracker・Reading Log

Subscriptions2
  • Weekly Pro3 Days trial$4.997 Days
  • Monthly Pro3 Days trial$14.991 Month
3 purchases

Stellary

Subscriptions3
  • Stellary Infinite7 Days trial$3.991 Month
  • Stellary Infinite7 Days trial$19.996 Months
  • Stellary Infinite7 Days trial$29.991 Year

Questions

Is Book Tracker・Reading Log free?
Book Tracker・Reading Log is free to download, with in-app purchases available.
Is Stellary free?
Stellary is free to download, with in-app purchases available.
Do Book Tracker・Reading Log or Stellary have ads?
Book Tracker・Reading Log shows ads; Stellary does not.
Which is updated more often, Book Tracker・Reading Log or Stellary?
Book Tracker・Reading Log ships an update every 4 months, and Stellary every 6 weeks. Most recently, Book Tracker・Reading Log was updated on October 8, 2026 and Stellary on October 7, 2026.

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