Comparison

Flow vs Bookworm Library

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

Head to head
About

Flow

Enhance your concentration and productivity with a scientifically proven method. This app divides your workflow into focused work intervals and scheduled breaks, helping you reduce stress and stay motivated. Ideal for work, study, or any task requiring deep focus.

Highlights
  • Pomodoro timer with work intervals and breaks
  • App and web blocking
  • Statistics tracking
  • Commitment mode
  • Inspirational quotes
  • Home & Lock Screen Widgets
Features
Read full description

Join hundreds of thousands of happy users who enjoy this simple way to stay focused and productive. Use Flow to get things done. Flow is a tiny but mighty app that helps you work on a task, study for school or simply stay focused without being distracted for a certain amount of time. Flow divides your workflow into sections with defined breaks, making it easy to stay focused. This method has been scientifically proven to be an effective way to increase your concentration and motivation while reducing your stress levels. The use of a Pomodoro timer can be a huge boost to your productivity. Use Flow to ... ... concentrate ... work on a task ... study for school ... code all night ... work from home Benefits of this technique • Improved focus and motivation • Increased productivity • Less stress and better health • Better management of interruptions Features • Pomodoro timer with work intervals and breaks • Statistics to keep track of your completed sessions • Notifications to remind you of short breaks • App and web blocking to combat distractions • Commitment mode for self-control • Inspirational quotes for motivation • Metronome for deep focus • Multiple duration options • Custom session title • Apple Calendar sync • Apple Health sync • iCloud sync of stats • Home & Lock Screen Widgets • Support for Live Activities & Dynamic Island YOU MATTER TO US We want to make Flow even better! Please give us your honest feedback in order to help us fix bugs and improve the app. We will regularly update Flow based on your feedback. Thank you! ABOUT US Yugen is a small independent developer studio based in Frankfurt, Germany. Our team is devoted to making great apps that we want to use ourselves. We strive to create products that help people in their everyday life with intuitive user experiences and minimalistic design. QUESTIONS? If you have any questions or problems, feel free to email us. We provide awesome support and love to help! www.flow.app support@flow.app Twitter: flow__app Facebook: flowapp.info Instagram: flowapp.info FLOW PRO Subscriptions will automatically renew unless canceled within 24-hours before the end of the current period through your Apple account. For more information, see our Terms of Use at https://www.flow.app/legal and Apple's Terms of Use (EULA) at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/.

About

Bookworm Library

Read full description

Never buy the same book twice again. Bookworm is a simple and powerful personal library app for iPhone and iPad that helps you track the books you own and the books you want. Whether you’re browsing a bookstore, visiting a book fair, or hunting through a garage sale, Bookworm lets you check your collection in seconds. Just scan the ISBN barcode to instantly see if a book is already in your library or on your wish list. No more guessing, no more duplicate purchases. Bookworm is ideal for readers, book collectors, and anyone who wants an organised, always available digital record of their book collection. Key Features • Scan ISBN barcodes to quickly look up books • Search for titles and add them to your collection • Mark books as Owned or Wanted • Import your library from a CSV file • Export your lists to CSV for backup or sharing • Create PDFs for Owned books, Wanted books, or your full library Bookworm is the perfect companion for managing your personal library—simple, fast, and always with you.

Screenshots

Flow4 screens

Verdict

The call

The clearest difference is in-app purchases: Bookworm Library at none against Flow's 3. Flow's advantage is device support. On price 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. Flow sells 3 in-app purchases, starting at $2.99 per month. Bookworm Library asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Flow versus Bookworm Library: the parameters behind the verdict, then further details
ParameterFlowBookworm Library
PriceFreeFree
Rating4.8 (1.7K ratings) — better—
Positive reviews85.7% of reviews—
Number of ratings1.7K — better—
Update frequencyEvery 4 weeks—
AdsNo—
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Mac, Apple Watch, Vision Pro — better—
Requires iOS18.0 — better18.6
Further details — not scored
Size80 MB2 MB
Age rating4+4+
DeveloperYugen GmbHAlphaworks

Bugs and requests

Flow

Reported bugs

4 issues
  • Live activity feature not working consistently
  • Timer not recording sessions accurately
  • App blocking functionality not working as expected
  • Crashes and freezes on certain macOS versions

Requested features

6 requests
  • Allow custom work and break durations
  • Add option to pause and resume flow sessions
  • Implement real-time sync across devices
  • Provide more detailed productivity tracking and reporting
  • Include an Apple Watch app with complication support
Show 1 more
  • Add ability to block notifications from certain apps during flows

Bookworm Library

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Flow

Subscriptions2
  • Monthly Plan7 Days trial$2.991 Month
  • Yearly Plan14 Days trial$17.991 Year
One-time1
  • Lifetime Pro Access$39.99
None

Bookworm Library

No in-app purchases

Questions

Is Flow free?
Flow is free to download, with in-app purchases available.
Is Bookworm Library free?
Bookworm Library is free to download, with no in-app purchases.

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