Comparison

Shelfy vs Constant Reader

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

Head to head
About

Shelfy

This app helps you build a personalized digital library, track your reading habits with a focused timer and ambient sounds, and capture memorable quotes. Discover new books, view insightful stats, and even import your existing library from other services.

Highlights
  • Build and customize a 3D digital bookshelf
  • Focused reading timer with ambient soundscapes
  • Capture and search book quotes
  • Personalized book recommendations
  • Track reading stats and earn achievements
  • Import libraries from Goodreads and StoryGraph
  • Ask questions about books as you read
Features
Read full description

Build the bookshelf you've always wanted. Shelfy turns reading into a cozy daily ritual — a beautiful private library, a focused reading timer with soundscapes, and the quotes and ideas you'll actually keep. "It just feels good to use. I catch myself opening the app instead of Instagram." — Kim T. "The shelves are so cute and customizable. Worth the annual fee." — MamaMaestraKP — YOUR PRIVATE LIBRARY — Add books by search, barcode, or photo of the cover. Watch them appear on a stunning 3D shelf you can customize end-to-end: wood textures, picture frames, statues, even the way your spines look. It's a bookshelf that finally feels like yours. — A READING RITUAL, NOT A CHORE — Start a focused reading session with ambient soundscapes — rain, cafe, fireplace, forest. Track time and pages without breaking flow. Pause when life happens, pick up where you left off. — CAPTURE WHAT YOU LOVE — Snap a page and Shelfy turns it into a clean text quote. Save bookmarks with a tap, search across every book you've read, and stop losing the lines that mattered. — DISCOVER WHAT TO READ NEXT — Swipe through personalized recommendations tuned to your taste. Build a TBR pile that actually excites you instead of one you keep avoiding. — STATS THAT MOTIVATE, NOT GUILT-TRIP — Daily, monthly, and yearly reading stats. Reading speed, longest streaks, favorite genres. A Year in Review that's actually fun to share. Earn achievements as you go. — A SMART READING COMPANION — Ask questions about any book as you read. Get a plot recap when a side character returns 200 pages later. Discuss themes, explore ideas, and remember more. — IMPORT YOUR BOOKS — Coming from Goodreads or StoryGraph? Bring your entire library, ratings, and shelves in one tap. We even auto-detect series and add the missing volumes. — READS LIKE A PHYSICAL BOOK SHOULD FEEL — Saw a book on TikTok or Reels? Share the video to Shelfy and we'll add it to your shelf. iCloud sync keeps your library identical on every device. Widgets, Siri shortcuts, and a yearly challenge keep reading top of mind. Shelfy is a subscription-first reading app, built and supported by a tiny indie team who reply to every email. We don't sell your data, we don't run ads, and we don't gamify reading into a chore. We just want you to fall back in love with books. Start your shelf today. — Shelfy Pro subscription unlocks all features. TERMS: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Constant Reader

Track your Stephen King reading journey and explore his universe with detailed insights and adaptation information. Unlock themed ranks as you progress through his iconic bibliography. Designed for fans with a private, fast, and simple experience.

Highlights
  • Track reading progress
  • Explore King's universe
  • Unlock themed ranks
  • Discover book adaptations
  • Private and fast experience
  • Stephen King inspired design
Features
Read full description

Enter the world of Stephen King like never before. Constant Reader is the ultimate companion app for fans of Stephen King, whether you are just opening your first book or you have already traveled to the Dark Tower. Track your reading, explore his universe, and watch your journey evolve as you move from Newcomer to true Constant Reader. TRACK YOUR JOURNEY Log every Stephen King book you have read and see your progress at a glance. Build your personal reading history and stay motivated as you work your way through one of the most iconic bibliographies in modern literature. UNLOCK RANKS Your reading journey comes with status. Progress through themed ranks inspired by King’s worlds, from Night Shift to Dark Tower Traveler, each milestone marking your growing connection to his stories. EXPLORE THE KING UNIVERSE Dive deeper into each book with rich details, connections, and insights. Discover how stories intertwine across Castle Rock, Derry, and beyond. DISCOVER ADAPTATIONS Browse film and TV adaptations tied to each book. See how King’s stories have been brought to life across generations of movies and series. DESIGNED FOR FANS From subtle horror-inspired visuals to rewarding interactions, every detail is crafted to feel like it belongs in a Stephen King story. SIMPLE, PRIVATE, FAST No accounts. No data tracking. Your reading journey stays on your device, just open the app and start exploring. Whether you are revisiting classics like “It” and “The Shining” or discovering hidden gems, Constant Reader helps you experience Stephen King’s work in a whole new way. Start your journey today, and see how deep the rabbit hole goes.

Screenshots

Shelfy4 screens
Constant Reader4 screens

Verdict

The call

The clearest difference is review sentiment: Constant Reader at 100% against Shelfy's 28%. Constant Reader also leads on in-app purchases (none vs 13) and ads (none vs shown). Shelfy's advantage is ratings volume (1.3K vs 15) and chart position (#38 vs unranked). On price, device support 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. Shelfy sells 12 in-app purchases, starting at $4.99 per 7 days. Constant Reader asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Constant Reader holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: Shelfy has 1.3K ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 28% of Shelfy's written reviews are positive against 100% of Constant Reader's.

UpkeepUpdate frequency

Shelfy ships an update every 6 days, Constant Reader every 2 days. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

Scorecard8 real differences · 3 level
Shelfy versus Constant Reader: the parameters behind the verdict, then further details
ParameterShelfyConstant Reader
PriceFreeFree
Rating4.5 (1.3K ratings)4.9 (15 ratings) — better
Positive reviews27.7% of reviews100.0% of reviews — better
Number of ratings1.3K — better15
Update frequencyEvery 6 daysEvery 2 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#38 — better—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.617.0 — better
Further details — not scored
Size180 MB8 MB
Age rating4+9+
DeveloperOleksandr Oleksandrovych MurakhovskyiShed Labs LLC

Customer experience

Shelfy

All ratings1,321 ratings
Positive90.3%
Neutral2.5%
Negative7.2%
Written reviews101 reviews
Positive27.7%
Neutral5.0%
Negative67.3%

Constant Reader

All ratings14 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

12 purchases

Shelfy

Subscriptions9
  • Weekly subscription3 Days trial$4.997 Days
  • Weekly subscription$4.997 Days
  • Monthly subscription$9.991 Month
Show 6 more
  • Monthly subscription$14.991 Month
  • Yearly subscription with 30% off$24.991 Year
  • Yearly subscription7 Days trial$29.991 Year
  • Yearly subscription3 Days trial2 variants$38.991 Year
  • Yearly subscription$38.991 Year
  • Yearly subscription3 Days trial$44.991 Year
One-time3
  • 10 Spines$2.99
  • 100 Spines$24.99
  • Lifetime access to Shelfy$99.99
None

Constant Reader

No in-app purchases

Questions

Is Shelfy free?
Shelfy is free to download, with in-app purchases available.
Is Constant Reader free?
Constant Reader is free to download, with no in-app purchases.
Which has better reviews, Shelfy or Constant Reader?
Constant Reader is rated higher. Shelfy averages 4.5 out of 5 from 1.3K ratings, while Constant Reader averages 4.9 from 15 ratings.
Do Shelfy or Constant Reader have ads?
Shelfy shows ads; Constant Reader does not.
Which is updated more often, Shelfy or Constant Reader?
Shelfy ships an update every 6 days, and Constant Reader every 2 days. Most recently, Shelfy was updated on October 31, 2026 and Constant Reader on October 24, 2026.

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