Comparison

Flow Wallpapers vs Black Wallpapers in 4K

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

Head to head
About

Flow Wallpapers

This app creates unique, auto-animating wallpapers that react when you wake your device. Customize your lock screen with your own text and choose from a growing library of dynamic designs. Enjoy a gentle animation every time you unlock your phone.

Highlights
  • Auto-animating wallpapers
  • Customizable text
  • Unique color shades and contrast
  • Lock screen animation
  • Regular wallpaper updates
  • Save and set wallpapers easily
Features
Read full description

Flow is one of a kind app that achieves a state of animation using various color shades and contrast levels which will greet you with a gentle animation when you raise to wake or open your lock screen. Flow wallpapers are specific wallpaper that have been tested hundreds of times in order to get the perfect shades and contrast levels that will look best on your device. With flow you can generate your own wallpaper, with your own text which will behave the same way, this is done in device and in a brief period of time. More wallpapers are added. To set a wallpaper simply save one to your photos library and go to the Settings app>Wallpapers>Camera Roll and choose the wallpaper you just saved, you can either set it as still or perspective both will work fine and set it on your lock screen. Lock your device and tap the home button or rise to wake in order to bring up the lock screen and you should notice the animation effect on the wallpaper. Flow wallpapers will work on any iPhone that can run the app. To get the animation effect you have to lock and unlock your device an you will see the wallpaper come to life gradually. You can now subscribe to premium for $0.99/week or use the one time purchase for unlimited lifetime access. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Terms of use: https://www.unicornapps.com/flow-wallpapers-terms-of-use/ Privacy Policy: https://www.unicornapps.com/flow-privacy-policy/ support@unicornapps.com

About

Black Wallpapers in 4K

Discover and download stunning high-resolution dark wallpapers for your mobile devices. Enhance your screen with a vast collection of ultra HD black backgrounds.

Highlights
  • 4K Ultra HD quality
  • Vast collection of dark wallpapers
  • High-resolution backgrounds
  • Mobile device optimization
  • Easy to download
Features
Read full description

Black Wallpapers in 4K Trending - Explore Popular Wallpapers Browse - Search Categories You Like Favorites - Save Your Best Picks https://kekapps.com/privacy-policy https://kekapps.com/terms-of-service

Screenshots

Flow Wallpapers4 screens
Black Wallpapers in 4K4 screens

Verdict

The call

Flow Wallpapers and Black Wallpapers in 4K both sit at 4.6 stars, but that hides the real split: 49% of Flow Wallpapers's written reviews are positive against 0% of Black Wallpapers in 4K's. Flow Wallpapers also leads on ads (none vs shown) and update cadence (every 10 days vs every 14 months). On price, rating, 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 Wallpapers sells 2 in-app purchases, starting at $0.99 per 7 days and Black Wallpapers in 4K sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Flow Wallpapers against 4.6 for Black Wallpapers in 4K. That said, the two scores are not equally well evidenced: Flow Wallpapers has 1.3K ratings behind it against 32, so its average is the more settled of the two. Written reviews are what separate them: 49% of Flow Wallpapers's written reviews are positive against 0% of Black Wallpapers in 4K's.

UpkeepUpdate frequency

Flow Wallpapers ships an update every 10 days, Black Wallpapers in 4K every 14 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Flow Wallpapers versus Black Wallpapers in 4K: the parameters behind the verdict, then further details
ParameterFlow WallpapersBlack Wallpapers in 4K
PriceFreeFree
Rating4.6 (1.3K ratings) — better4.6 (32 ratings)
Positive reviews49.1% of reviews — better0.0% of reviews
Number of ratings1.3K — better32
Update frequencyEvery 10 days — betterEvery 14 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size17 MB38 MB
Age rating4++4
DeveloperRonan StarkDominik Kwasniewski

Customer experience

Flow Wallpapers

All ratings1,288 ratings
Positive90.3%
Neutral4.1%
Negative5.6%
Written reviews53 reviews
Positive49.1%
Neutral5.7%
Negative45.3%

Black Wallpapers in 4K

All ratings31 ratings
Positive83.9%
Neutral16.1%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

Flow Wallpapers

Reported bugs

3 issues
  • Wallpapers not animating as expected
  • Compatibility issues with newer devices
  • Errors when trying to save wallpapers

Requested features

3 requests
  • Preview wallpapers before purchase
  • Improved search and filtering
  • Customization options for animations

Black Wallpapers in 4K

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Flow Wallpapers

Subscriptions1
  • Flow Premium Subscription$0.997 Days
One-time1
  • Flow Premium$2.99
3 purchases

Black Wallpapers in 4K

Subscriptions3
  • Premium3 Days trial$2.997 Days
  • Premium$4.991 Month
  • Premium$19.991 Year

Questions

Is Flow Wallpapers free?
Flow Wallpapers is free to download, with in-app purchases available.
Is Black Wallpapers in 4K free?
Black Wallpapers in 4K is free to download, with in-app purchases available.
Which has better reviews, Flow Wallpapers or Black Wallpapers in 4K?
Flow Wallpapers is rated higher. Flow Wallpapers averages 4.6 out of 5 from 1.3K ratings, while Black Wallpapers in 4K averages 4.6 from 32 ratings.
Do Flow Wallpapers or Black Wallpapers in 4K have ads?
Black Wallpapers in 4K shows ads; Flow Wallpapers does not.
Which is updated more often, Flow Wallpapers or Black Wallpapers in 4K?
Flow Wallpapers ships an update every 10 days, and Black Wallpapers in 4K every 14 months. Most recently, Flow Wallpapers was updated on November 2, 2026 and Black Wallpapers in 4K on November 3, 2026.

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