Comparison

Agatha Christie Reading List 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

Agatha Christie Reading List

Track your Agatha Christie reading and book collection with this comprehensive checklist. Discover related works, graphic novels, and trivia. Organize your library, rate books, and add personal notes.

Highlights
  • Complete list of all published works
  • Track read and owned books
  • Discover books about Agatha Christie
  • Find inspired works and graphic novels
  • Rate books and add personal notes
  • Sort books by various criteria
Features
Read full description

Here is the perfect app for fans of Agatha Christie and for those who collect her books. Keep track of which books you've read and which ones you own. It is the most complete list you'll ever find. Just tap on the little boxes to check "Read" or "Own". Nothing could be easier! Some highlights: -COMPLETE list of ALL mysteries, romances, non-fiction works, and plays Agatha Christie ever published in a convenient, organized, easy-to-use format. The perfect checklist app for avid Agatha Christie readers. -Discover all the books written ABOUT Agatha Christie's life and works. So many books by so many authors! Lots to peruse! Anyone who reads everything listed would surely become an Agatha Christie expert! -Find which authors have chosen to use Agatha Christie as a "character" in their stories, or which authors have works inspired by Agatha Christie. -Explore Agatha Christie's mysteries in the form of graphic novels. A complete list is included! -Find interesting books about trivia, travel, art, movies, in depth looks at characters, plots, and many other things related to Agatha Christie and her works. MORE features: -Rate each book on a scale of 1 to 5 stars. Remember at a glance how much you enjoyed every one. -Keep detailed notes about each book. Note things about the plot, the characters, insights you might have gleaned, who you loaned the book to, where the book is located, your favorite quotes - anything you might want to remember about each title! -Find her mysteries through a myriad of ways, depending on your interest. Books can be sorted by date published, by title, by alternate titles, by sleuth, or by type (novel, short story collection, play, and now, by individual short story titles). Further sorting allows you to see which books you've read or not read, and which books you've bought or still need to purchase. We feel that Dame Agatha Christie has truly earned her title as the Queen of Crime so we created this app in appreciation of her work. If you've ever been at a book shop, yard sale, or even online trying to remember if you have a certain Agatha Christie title or wondered if you have the same book under a different title, then you need this app. We know only too well how useful this app has become since we are avid Christie readers, too. Download the Agatha Christie Reading List now and discover the ease and convenience yourself. You'll be glad you did! Happy Reading!! FOR FANS IN THE UNITED STATES, there is an extra-special bonus: Eight ebooks and three short stories are included (for free!) to get you reading right now. UNFORTUNATELY, due to copyright constraints, the e-books are not available outside the U.S. You still get the full functionality of the app and all the ways to keep track of your books, however! DISCLAIMER: We are in no way affiliated with Agatha Christie Limited nor any other author or publisher within this app. We do not endorse any title, author or publisher contained within this app nor do they endorse Lea Studios or this app. We are simply fans of Agatha Christie creating lists for other fans of Agatha Christie for discovery, enrichment, and fun!

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

Agatha Christie Reading List4 screens
Constant Reader4 screens

Verdict

The call

The clearest difference is update cadence: Constant Reader at every 2 days against Agatha Christie Reading List's every 4 months. Constant Reader also leads on review sentiment (100% vs 91%). Agatha Christie Reading List's advantage is device support (3 vs 1) and ratings volume (56 vs 15). On price, rating, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Constant Reader holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 56 and 15 respectively. Written reviews point the same way: 91% of Agatha Christie Reading List's written reviews are positive against 100% of Constant Reader's.

UpkeepUpdate frequency

Agatha Christie Reading List ships an update every 4 months, Constant Reader every 2 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
Agatha Christie Reading List versus Constant Reader: the parameters behind the verdict, then further details
ParameterAgatha Christie Reading ListConstant Reader
PriceFreeFree
Rating4.7 (56 ratings)4.9 (15 ratings) — better
Positive reviews90.9% of reviews100.0% of reviews — better
Number of ratings56 — better15
Update frequencyEvery 4 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size336 MB8 MB
Age rating12+9+
DeveloperCarolyn LeaShed Labs LLC

Customer experience

Agatha Christie Reading List

All ratings50 ratings
Positive94.0%
Neutral0.0%
Negative6.0%
Written reviews44 reviews
Positive90.9%
Neutral6.8%
Negative2.3%

Constant Reader

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

Bugs and requests

Agatha Christie Reading List

Reported bugs

5 issues
  • Alternate Titles section not working
  • Cannot transfer data to new device
  • Missing some titles
  • Reader's stats area disappeared after update
  • Personal progress totals removed after update

Requested features

11 requests
  • Printable reading list
  • Export data to Excel
  • Track audiobooks
  • Track physical books separately
  • Add more classic mystery writers
Show 6 more
  • Add Mark Aldridge's reference books
  • Ability to check off movies/TV series
  • Merge info on all devices
  • Summaries of titles
  • Bring back 'achievement' feature
  • Bring back reader's stats/progress totals

Constant Reader

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Agatha Christie Reading List

No in-app purchases

None

Constant Reader

No in-app purchases

Questions

Is Agatha Christie Reading List free?
Agatha Christie Reading List is free to download, with no in-app purchases.
Is Constant Reader free?
Constant Reader is free to download, with no in-app purchases.
Which has better reviews, Agatha Christie Reading List or Constant Reader?
Constant Reader is rated higher. Agatha Christie Reading List averages 4.7 out of 5 from 56 ratings, while Constant Reader averages 4.9 from 15 ratings.
Do Agatha Christie Reading List or Constant Reader have ads?
Neither Agatha Christie Reading List nor Constant Reader shows ads.
Which is updated more often, Agatha Christie Reading List or Constant Reader?
Agatha Christie Reading List ships an update every 4 months, and Constant Reader every 2 days. Most recently, Agatha Christie Reading List was updated on November 1, 2026 and Constant Reader on October 31, 2026.

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