FocalPaint

mark-making machine

brien dieterle
App Store rating4.2★13 ratings
Price$4.99Listed price
Age4+Store age rating
Size584 MBiPhone download
CategoryLifestyle

What we found

Full report

Too little checked to say Store information only. We haven’t analysed this app or read its reviews yet.

Money

  • $4.99 to download.

Not yet tested.

The store currently lists version 4.1.1, updated 2026-08-08.

Preview

Screenshot 1Screenshot 2Screenshot 3

Store screenshots supplied by the developer.

About this app

FocalPaint's unique brush engine simulates thick paint and real pigment mixing with accurate physics models.

Features:

- Realistic color blending behaves like real paint!

- Real canvas texture and paint thickness

- Transparent Ink simulation

- Open Source GPU shader code library for reference and customization

- Write your own custom brush with Metal GPU or Javascript code

- Write your own custom layer modes with Metal GPU code

- Apple Pencil Pro support with hover

- 16 channel "spectral" color model (256 bits per pixel)

- Wide color gamut (P3)

Please note: Apple A12 GPU or newer is required

Terms of Use:

https://www.focalpaint.com/p/terms-of-use.html

Privacy Policy:

https://www.focalpaint.com/p/privacy.html

Special Thanks to:

Scott Allen Burns

Troy James Sobotka & Friends

colour-science.org python library

MyPaint painting software team

Anna Timm (@anti-art)

From the developer’s store description.

For developers and the curious

The full report

The evidence, sources, measurements and versions behind every label above.

Findings and evidence

Not yet tested
Not yet tested. No analysis has been published for this app. A missing label is not a clean bill of health.

What reviewers report

No review coverage

No review analysis published for this app.

Measurements

3 measured · 5 not assessed

“Not assessed” means we could not measure it. It is never a zero and never a pass.

From store data and reviews

Developer replies to reviews
Not assessed
Fewer than 50 reviews scanned — too few to state a rate
Price in the store description
The store description doesn’t list prices (most don’t)
Cancelling, in the store description
The store description doesn’t say how to cancel (most don’t)
Themes reported by reviewers
Not assessed
This app's reviews have not been assessed yet
Five-star share of ratings
65–79% five-star
Arithmetic on the stores' own published rating counts. It says nothing about why the ratings fall where they do.

In the app package we scanned

No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence, not a finding.

Sensitive permissions
Not assessed
No package has been scanned for this app
Analytics or tracking SDKs in the scanned package
Not assessed
No package has been scanned for this app
Advertising SDKs in the scanned package
Not assessed
No package has been scanned for this app
How we know

Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured

Versions and dates analysed

Not yet tested

Not yet tested. No analysis has been run for this app, so there is no version or date to report.

Store update history

Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.

App Store

Version 4.1.1 · 2026-08-08
Fixed Eraser mode that caused a crash Added a brush inheritance field to allow brushes to be based on a common brush Enhanced bristle and bristle cluster settings to allow much more fidelity in brushes The next release will have a huge update to the brush library!

Assessment record

Status
Not yet tested
App identifier
focalpaint
Sources used
None recorded
Reviews read
None recorded
Package examined
No package scan
Human inspection
Not completed
How we know
Measurement vocabulary
1.4

Store facts

App Store

What the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.

App Store

Store rating
4.23 ★ · 13 ratings
Version
4.1.1
Updated
8 Aug 2026
Price
$4.99
Age rating
4+
Size
584 MB
Open in App Store
Developer
brien dieterle
Category
Lifestyle
Listing price
$4.99

No itemized purchase list is available for this listing.

Method and limits

What this report can and cannot show

What a missing label means

Not yet tested. No analysis has been published for this app, so there is no method to describe for it yet. A missing label is not a clean bill of health: it means nothing has been read, not that nothing is wrong.

Limits of this report

  • A package scan is static. It identifies code and text in one Android build. It does not measure a live ad session, test a deletion request, or count the steps needed to cancel.
  • Reviews keep their sample. A review-only charge shows distinct reviewers, the share and the sample size, and is published only once it clears that label’s published threshold. Calibration labels are machine-drafted and not yet confirmed by a person.
  • Not assessed is a state. It is never a zero and never a pass.
  • A missing label is not a clean bill of health. It means the evidence did not support one, not that the app is problem-free.
Not yet human-reviewed. A human review gives an app hands-on, recorded measurements. None has been run for this app. Hands-on inspections are not yet open.

Request a correction

[email protected]

Write to [email protected], or use the form. Name the finding, the app version and the evidence that needs correcting. Factual corrections are free and never depend on buying anything.