Comparison

Flow vs PDFDarkMode

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

PDFDarkMode

Easily convert PDFs to a comfortable dark mode with custom text and background colors. Reduce eye strain while reading or studying long documents. Save and revisit your personalized PDFs in a private library.

Highlights
  • Upload PDFs from device
  • Customize text and background colors
  • Preview dark mode changes
  • Download converted PDFs
  • Personal PDF library
  • Private by design
Features
Read full description

PDFDarkMode makes your PDFs easier on the eyes, day or night. Upload any PDF, choose your own text and background colors, preview your changes, and download your converted document directly within the app. Whether you’re studying, reading long-form writing, or reviewing technical documents, PDFDarkMode helps reduce eye strain and make your PDFs visually comfortable and fully personalized. Features • Upload any PDF from Files or your device • Customize text color and background color • Preview your converted PDF in full dark mode • Download it directly • Save and revisit all converted PDFs in your personal library • One-time in-app purchase to download a dark mode PDF for $2.99 • Upgrade to PDFDarkMode Pro for $9.99 to unlock unlimited dark mode PDF downloads Private by Design No logins. No analytics. No tracking. Your PDFs stay private.

Screenshots

Flow4 screens
PDFDarkMode4 screens

Verdict

The call

The clearest difference is update cadence: PDFDarkMode at every 4 days against Flow's every 4 weeks. PDFDarkMode also leads on review sentiment (100% vs 86%) and rating (5.0 vs 4.8). Flow's advantage is ratings volume (1.7K vs 1) and device support (5 vs 2). On price, ads, in-app purchases and monetization model 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 and PDFDarkMode sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

PDFDarkMode holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Flow has 1.7K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 86% of Flow's written reviews are positive against 100% of PDFDarkMode's.

UpkeepUpdate frequency

Flow ships an update every 4 weeks, PDFDarkMode every 4 days. The most recent releases landed on September 26, 2026 and September 10, 2026 respectively.

Scorecard6 real differences · 4 level
Flow versus PDFDarkMode: the parameters behind the verdict, then further details
ParameterFlowPDFDarkMode
PriceFreeFree
Rating4.8 (1.7K ratings)5.0 (1 ratings) — better
Positive reviews85.7% of reviews100.0% of reviews — better
Number of ratings1.7K — better1
Update frequencyEvery 4 weeksEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Mac, Apple Watch, Vision Pro — betteriPhone, iPod
Requires iOS18.015.0 — better
Further details — not scored
Size80 MB4 MB
Age rating4+4+
DeveloperYugen GmbHWildcatter LLC

Customer experience

Flow

All ratings1,746 ratings
Positive94.4%
Neutral2.6%
Negative3.0%
Written reviews566 reviews
Positive85.7%
Neutral4.9%
Negative9.4%

PDFDarkMode

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

PDFDarkMode

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
5 purchases

PDFDarkMode

One-time5
  • Download PDF (up to 100 pages)$0.99
  • Dark Mode PDF Download2 variants$2.99
  • Download PDF (up to 500 pages)$4.99
Show 2 more
  • PDFDarkMode Pro$9.99
  • Download PDF (500+ pages)$9.99

Questions

Is Flow free?
Flow is free to download, with in-app purchases available.
Is PDFDarkMode free?
PDFDarkMode is free to download, with in-app purchases available.
Which has better reviews, Flow or PDFDarkMode?
PDFDarkMode is rated higher. Flow averages 4.8 out of 5 from 1.7K ratings, while PDFDarkMode averages 5.0 from 1 ratings.
Do Flow or PDFDarkMode have ads?
Neither Flow nor PDFDarkMode shows ads.
Which is updated more often, Flow or PDFDarkMode?
Flow ships an update every 4 weeks, and PDFDarkMode every 4 days. Most recently, Flow was updated on September 26, 2026 and PDFDarkMode on September 10, 2026.

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