Comparison

BookDay vs Noctua

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

Head to head
About

BookDay

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BookDay was created with the aim of encouraging young adults to build reading habits. It helps readers who want to insert more literature into their daily lives, but suffer from a lack of organization. Thinking about helping them, the application offers several features, such as: - Bookshelves dedicated to books you want to read or have already been read; - Vast number of literary works; - Scheduled reminders; - Custom annotations; - Monitoring the reading process. BookDay is a free application, developed by Isabella Gomes, Sofia Gelli and Vivian Bacelar.

About

Noctua

Features
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Noctua is a calm reading companion designed to help you focus, track your progress, and build a lasting reading habit. Instead of rushing through pages, Noctua encourages focused reading sessions. Start a session, read at your own pace, and finish when you’re done. Based on how much you read and how long you stay focused, Noctua estimates when you’ll finish your book β€” using your real reading rhythm, not guesses. When you’re unsure what to read next, Noctua helps you decide with thoughtful guidance, turning choice into clarity instead of noise. You can track your reading progress, understand your habits over time, and stay present with tools designed to reduce distractions. Everything is built with simplicity, intention, and privacy in mind. Noctua isn’t about reading more books. It’s about reading better.

Screenshots

BookDay4 screens
Noctua4 screens

Verdict

The call

The clearest difference is iOS requirement: BookDay at 16.0 against Noctua's 18.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

BookDay ships an update weekly, Noctua every 5 days. The most recent releases landed on November 7, 2026 and October 28, 2026 respectively.

Scorecard1 real difference Β· 5 level
BookDay versus Noctua: the parameters behind the verdict, then further details
ParameterBookDayNoctua
PriceFreeFree
Update frequencyWeeklyEvery 5 days β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone
Requires iOS16.0 β€” better18.6
Further details β€” not scored
Size4 MB37 MB
Age rating4+4+
DeveloperFUNDACAO PADRE LEONEL FRANCALeonardo Melegari

In-app purchases

None

BookDay

No in-app purchases

None

Noctua

No in-app purchases

Questions

Is BookDay free?
BookDay is free to download, with no in-app purchases.
Is Noctua free?
Noctua is free to download, with no in-app purchases.
Do BookDay or Noctua have ads?
Neither BookDay nor Noctua shows ads.
Which is updated more often, BookDay or Noctua?
BookDay ships an update weekly, and Noctua every 5 days. Most recently, BookDay was updated on November 7, 2026 and Noctua on October 28, 2026.

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