Comparison

POLYCAM vs Zen Brush 3

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

Head to head
About

POLYCAM

Create unique visual effects by combining over 150 built-in filters. This app allows for real-time camera input manipulation, loading existing media, and exporting high-quality videos. Customize parameters with sliders, LFOs, or sensor data for interactive visualizers.

Highlights
  • Combine over 150 built-in filters
  • Create and save custom filter chains
  • Real-time camera input processing
  • Load and export existing images/videos
  • Adjustable filter parameters
  • Interactive audio visualizers
  • Full-screen output with smooth transitions
Features
Read full description

To create a custom filter, use the built-in basic image filters and combine them. You can also load previously recorded images/videos and record/export. Filter Custom filters are created by connecting filters selected from over 150 collections in series. For instance, you can do the following: Camera input-> [Mirror effect-> Monochrome effect-> Glitch effect]-> Display / Recorder The items inside [] are called chains and can be selected and rearranged as you please. This chain can be saved, and once created and saved, it can be loaded with one tap. There are so many filters that it is hard to find immediately, but you can find them by searching or categorizing. The filters include a built-in iOS filter called Core Image Filter (* 1) and a POLYCAM original filter created with Metal (* 2) shader. The Loop filter has a built-in feedback circuit that allows you to re-read the output of the previous frame, making it ideal for more experimental video generation and circuit bending. Generic filters such as StarShine, SunBeam, Lenticular Halo, and Gradient are also included, so you can create generated images. Output Full screen output without indicators of 4 outputs. HDMI, AirPlay, NDI®, Aether, are possible. Using smooth alpha transitions for almost all transitions, you can create a smooth production when projecting full-screen images using Outputs. Export If the source input is selected from photos or videos in the photo album, it can be asynchronously exported to the photo album. This is different from real-time recording at the time of shooting, and is written in non-real time for each frame. Smooth videos can be saved even at resolutions and settings that lack the power of the CPU or GPU. Parametrics Each filter has several parameters that you can adjust with the sliders to adjust the filter's balance and effect. Parameters can be automated with the LFO oscillator or random generator. You can also assign audio input peaks from microphones, accelerometers, gyro sensors, MIDI inputs, etc. for interactive control and create audio visualizers. Settings Camera select (internal / external, double, triple also available) Aspect ratio (Original, 1: 1, 3: 4, 9:16, 4: 3, 16: 9) Resolution (Original, QD, HD, FHD) Microphone gain NDI® on / off (*3) Aether wireless sender bit rate (*4) Tint color change Rotation lock Saving, sharing, and exporting Chains The created chain can be saved with the save button at the lower right of the chain table view. The saved chains are arranged in the collection view, and the chains can be loaded by tapping or dragging and dropping. You can share the chain by dragging and dropping it on the share mark. You can send it to macOS or save it to the File app. Exporting the settings will share the entire collection in the current chain. You can save all the filters you have created or share them with someone. (*5) Notes: *1 Core Image Filter Reference - Apple Developer https://developer.apple.com/library/archive/documentation/GraphicsImaging/Reference/CoreImageFilterReference/index.html#//apple_ref/doc/filter/ci/CIDiscBlur *2 Metal - Apple Developer https://developer.apple.com/jp/metal/ * 3 NDI® is a low-latency NewTek IP video library. It is built into various devices and applications such as macOS and Windows, and enables high-quality video communication by wireless or wired connection. https://www.ndi.tv/ (Currently, POLYCAM's vertical 9:16 transmission has a bug, but it works normally with other aspect ratios.) * 4 Aether is a low-latency, lightweight original IP video communication framework. It can be sent to Mac via wireless or wired connection and connected to Siphon for use in various applications. https://sites.google.com/view/aetherframework * 5 Chains and chain collections saved in the File app can be opened and read from POLYCAM when selected from the File app. Please send by AirDrop when sharing to other devices.

About

Zen Brush 3

This app allows users to create beautiful East Asian ink art, including calligraphy and painting. It simulates an ink brush with adjustable water and color features, offering a rich expressive range for both beginners and experienced artists. Easily share and edit your creations with various export options and background templates.

Highlights
  • Simulated 3D ink brush drawing
  • Adjustable water and color effects
  • Layer functionality for flexible editing
  • Import photos for tracing or backgrounds
  • Rich background and paper templates
  • Export to JPEG, PNG, and transparent PNG
Features
Read full description

Zen Brush 3 is a drawing app focused on the strong yet beautiful feel of the East Asian ink brush which can be used to perform calligraphy, ink painting and more. The drawing system that brings to life a feeling of silky fluent and delicate painting now allows an even wider range of expression thanks to the addition of "water" and "color". Providing a new simple and intuitive user interface, this app is designed to be optimal for performing Zen art. Simply start the app and you are immediately ready to draw. Anyone, anywhere, can create superb Zen art with this app’s uniquely rich expressiveness. You can also easily share and edit your calligraphy and images with other apps using the Export functionality. Skillfully use the rich background style templates to create and share atmospheric artwork. - The drawing system simulates a 3D model of an East Asian ink brush to enable varied and natural styles of brush handling. - The adjustable amount of water makes it possible to create expressions ranging from powerful edge effects to "nijimi" (bleeding) and "bokashi" (blurring) where colors mix. - You can also enjoy creating colored-ink paintings as well as watercolor paintings by making use of 30 selected traditional Japanese colors. - The layer functionality allows more flexible editing. - Import photos to add text to them or use them as background images for tracing. - Create fascinating artwork with a rich assortment of background style templates. - Traditional Japanese paper templates provide an authentic feel. Features: - 5 main tools (ink brush, color brush, water brush, eraser, blotting paper). - 10 levels of thickness. - 5 levels of water (not applicable to blotting paper). - 10 levels of ink tone (not applicable to water brush and blotting paper). - Color palette with 30 colors. - 89 background style templates. - Drying functionality (fast dry, instant dry, adjustable natural dry). - Layers functionality (import image / color adjustment / move / rotate / scale / reverse left and right / white transparency / gradation effect). - Guide display (character guides / partition guides / grid guides). - Movable toolbar (top / bottom / left / right). - Canvas zoom (zoom in and out with pinch gestures). - Undo / redo (5 levels). - Export functionality (formats: JPEG, PNG, transparent PNG (no background)). - Support for Apple Pencil (1st and 2nd generation). - Support for 3D Touch (where available: iPhone 6S - XS). - Drawing tool selection (finger and stylus / stylus only). - Adjustable brush pressure sensitivity (5 levels, with supported stylus only). - Adjustable tilt sensitivity (5 levels, with supported stylus only). - Gesture functionality (pinch zoom and drag, zoom toggle with 2-finger tap). - 3D brush display (enable / disable). - Pointer display (enable / disable). - 5 levels of canvas resolution with a maximum of 3072 x 4096 pixels (the higher resolutions do not work on devices with lower specs).

Screenshots

POLYCAM4 screens
Zen Brush 34 screens

Verdict

The call

The clearest difference is rating: Zen Brush 3 at 4.4 against POLYCAM's 4.0. Zen Brush 3 also leads on ratings volume (58 vs 6) and review sentiment (60% vs 50%). On price, update cadence, 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

POLYCAM costs $4.99 and Zen Brush 3 $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Zen Brush 3 holds the better App Store score, 4.4 against 4.0. That said, the two scores are not equally well evidenced: Zen Brush 3 has 58 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 50% of POLYCAM's written reviews are positive against 60% of Zen Brush 3's.

UpkeepUpdate frequency

POLYCAM ships an update every 6 weeks, Zen Brush 3 every 3 months. Both last shipped on October 29, 2026.

Scorecard3 real differences · 8 level
POLYCAM versus Zen Brush 3: the parameters behind the verdict, then further details
ParameterPOLYCAMZen Brush 3
Price$4.99$4.99
Rating4.0 (6 ratings)4.4 (58 ratings) — better
Positive reviews50.0% of reviews59.8% of reviews — better
Number of ratings658 — better
Update frequencyEvery 6 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#145#92 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size4 MB226 MB
Age rating4+4+
DeveloperNarumi InadaPSOFT

Customer experience

POLYCAM

All ratings6 ratings
Positive66.7%
Neutral16.7%
Negative16.7%
Written reviews4 reviews
Positive50.0%
Neutral25.0%
Negative25.0%

Zen Brush 3

All ratings55 ratings
Positive81.8%
Neutral5.5%
Negative12.7%
Written reviews117 reviews
Positive59.8%
Neutral12.0%
Negative28.2%

Bugs and requests

POLYCAM

Not enough reviews yet to summarise bugs or requests.

Zen Brush 3

Reported bugs

14 issues
  • App crashes when setting maximum resolution
  • Crashes when adding layers or importing images
  • Crashes during high-resolution JPEG export
  • iPad Pro M2 overheating and battery drain
  • Apple Pencil input not recognized
Show 9 more
  • Finger pressure detection not working
  • Brush lag and motion prediction issues
  • Dithering too large at default resolution
  • Support link returns blank screen
  • Cannot delete saved works
  • Import from Zen Brush 2 not functional
  • iMessage function removed without explanation
  • App closed unexpectedly with PSOFT MOBILE message
  • Pressure sensitivity inconsistent across devices

Requested features

23 requests
  • Canvas rotation with two-finger gestures
  • Increased undo/redo levels (more than 5)
  • Grid or guide line display for practice
  • Custom color wheel/palette picker
  • Instant erase without animations
Show 18 more
  • Larger grid options for quadrant practice
  • Brush size slider with fine-grained control
  • Drawing correction/smoothing adjustment
  • Layer blending modes (multiply, etc.)
  • High DPI and vector export options
  • Sketch import for tracing/reference
  • Text tool with adjustable sizing
  • Cross-device cloud synchronization
  • Trial/demo period before purchase
  • Subscription model with regular updates instead of new app versions
  • Larger UI elements and palette buttons
  • Tutorial or guided introduction
  • Gold and silver color options
  • Batch character/kanji saving and arrangement
  • Community sharing feature or official gallery
  • Customizable drawing correction levels
  • Disable finger optimizations for stylus users
  • Motion prediction control for faster strokes

In-app purchases

None

POLYCAM

No in-app purchases

None

Zen Brush 3

No in-app purchases

Questions

Is POLYCAM free?
POLYCAM costs $4.99, with no in-app purchases.
Is Zen Brush 3 free?
Zen Brush 3 costs $4.99, with no in-app purchases.
Which has better reviews, POLYCAM or Zen Brush 3?
Zen Brush 3 is rated higher. POLYCAM averages 4.0 out of 5 from 6 ratings, while Zen Brush 3 averages 4.4 from 58 ratings.
Do POLYCAM or Zen Brush 3 have ads?
Neither POLYCAM nor Zen Brush 3 shows ads.
Which is updated more often, POLYCAM or Zen Brush 3?
POLYCAM ships an update every 6 weeks, and Zen Brush 3 every 3 months. Most recently, POLYCAM was updated on October 29, 2026 and Zen Brush 3 on October 29, 2026.
Which is more popular, POLYCAM or Zen Brush 3?
POLYCAM currently peaks at #145 in the App Store charts, and Zen Brush 3 at #92. Chart position reflects recent download velocity rather than total install base.

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