Real store listing. Store data comes from public listings; the assessment type and evidence coverage are labeled on this page.
Appworthy

Imprint: Learn Visually

*Winner of Google's "Best App of 2023"* Imprint is your visual guide to the…

Polywise
Deletion (dev says) — Developer says you can request data deletion
Get it onGoogle Play
Google Play rating4.5★13.3K ratings
PriceFreeIn-app purchases
Age4+Store age rating
CategoryEducation
DeveloperPolywise

At a glance

Full report

Things to watch for 0

Nothing published. That is not a guarantee the app is problem-free.

Positives 1

From our automated analysis, 4 Oct 2026. Every label links to its evidence in the full report below.

This analysis describes version 3.15.3 of the app, analyzed 2026-10-04 . The app may have changed since.

The store currently lists version 3.15.4, updated 2026-10-01.

The app has been updated since this analysis. The findings on this page describe version 3.15.3, not the version now listed on the store.

The developer’s release notes for the newer versions, where we hold them, are in Versions and dates analysed.

Preview

Screenshot 1Screenshot 2Screenshot 3Screenshot 4Screenshot 5Screenshot 6Screenshot 7Screenshot 8

Store screenshots supplied by the developer.

About this app

*Winner of Google's "Best App of 2023"*

Imprint is your visual guide to the world's most important knowledge.

- Master essential topics in psychology, philosophy, history, finance, leadership, business, health, science, technology and more.

- Understand complex concepts quickly, with elegant visuals that clarify key ideas and help you stay focused.

- Complete a chapter in two minutes or less, in bite-sized sessions throughout your day.

- Explore our rapidly expanding catalog, featuring:

COURSES

- Philosophy and the Meaning Life with Professor John Kaag

- Bitcoin and Blockchains

- The History of the United States Government

QUICK READS

- The Freudian Mind: Id, Ego, Superego

- NFTs: A Visual Guide

- You Are What Your Gut Bacteria Eat

VISUAL GUIDES TO BESTSELLING BOOKS

- Sapiens by Yuval Noah Harari

- Atomic Habits by James Clear

- The Beginner's Guide to the Stock Market by…

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

1 published · 4 shown, not confirmed

Positives 1

Specific evidence of a useful property, within the stated scope.

Developer says data deletion can be requested

Measured

The developer's store data-safety disclosure states that data deletion can be requested; we have not seen a deletion control in the app's own text

Sources
The store listing
Agreement
A measured fact from one deterministic, checkable source.
Where measured
From the Google Play listing
Definition

The developer's data-safety disclosure on the store states that users can request deletion of their data, or the app's own text offers a way to delete the account. This restates what the developer declares; it is not a test of whether deletion works. Apple publishes no equivalent disclosure, so on an Apple-only listing only the app's own text can support it.

Open evidence

One source only — shown, not confirmed 4

Open observations that have not cleared the evidence bar.

Reports that the ads misrepresent the app

One source only

Misleading advertising: raised by 5 distinct reviewers (1.2% of 423 reviews scanned)

Sources
User reviews
Agreement
Only one kind of source so far. Shown, not counted.
Where measured
From Google Play reviews

This observation has not cleared the required evidence standard.

Definition

Reviewers repeatedly report that the app is not what its advertising showed. We never see the ad creative itself, so nothing we collect can corroborate or refute this — it is published as an attributed user report: what reviewers say, and how many of them said it.

Open evidence

Paywall blocks the basics

One source only

Paywall blocks the basics: raised by 12 distinct reviewers (2.8% of 423 reviews scanned)

Sources
User reviews
Agreement
Only one kind of source so far. Shown, not counted.
Where measured
From Google Play reviews

This observation has not cleared the required evidence standard.

Definition

The core of the app — not extras — sits behind payment, or previously-free function moved behind a paywall.

Open evidence

Hard to cancel

One source only

Hard to cancel: raised by 7 distinct reviewers (1.7% of 423 reviews scanned)

Sources
User reviews
Agreement
Only one kind of source so far. Shown, not counted.
Where measured
From Google Play reviews

This observation has not cleared the required evidence standard.

Definition

Cancelling the subscription is blocked, hidden, multi-step, or simply does not take effect.

Open evidence

Trial converts to a charge

One source only

Trial converts to a charge: raised by 8 distinct reviewers (1.9% of 423 reviews scanned)

Sources
User reviews
Agreement
Only one kind of source so far. Shown, not counted.
Where measured
From Google Play reviews

This observation has not cleared the required evidence standard.

Definition

The free trial demands a payment method up front and/or rolls into a paid subscription with no usable warning.

Open evidence

Nothing was published as a thing to watch for in this assessment. That is not a finding that nothing is wrong with the app.

What reviewers report

423 reviews read · 4 review-based observations

423 reviews read for this analysis. Each observation keeps the sample and store it was based on.

Reports that the ads misrepresent the app

Shown, not confirmed

Beware - feels very scammy Quiz promises a personalised experience but never delivers - I signed up for history and was recommended psychology. The visual style and writing style are childish, and the actual history "courses" (more like…

1★ · Google Play · 2026-04-01

The app is ok but the advertisement and onboarding are misleading. I clicked on an app about a biology/botany game. It then took me through a series of questions about my interests. Once I was done it then asked me to sign up for a trial…

1★ · Google Play · 2026-05-14

paid annual subscriber here, still giving the app only 3 stars. - content is thin in certain categories, general business and history/ philosophy has decent amount of content. i will run out of content I am interested in soon. 2. I cannot…

2★ · Google Play · 2026-03-03

Paywall blocks the basics

Shown, not confirmed

I've used excellent apps for months that respect my privacy and let me play without ever demanding a credit card or a forced sign-up. This app does the opposite—it lures you in with a long questionnaire to get you 'invested', then hits…

1★ · Google Play · 2026-04-05

"in app purchases" no, you need to pay to do anything. answer a bunch of questions and every other thing is about how great it is, should have been the red flag of you need to pay to do anything. you also can't do the free trial without…

1★ · Google Play · 2026-04-22

Quite literally can't do anything without paying into the subscription.

1★ · Google Play · 2026-08-29

Hard to cancel

Shown, not confirmed

Appears to have accurate information with very basic bite size descriptions. Made for people who are looking for a very brief summary about a specific topic in a grade ten level format. If Wikipedia is too much for you this would be an…

1★ · Google Play · 2026-02-01

Don't believe them when they say they will notify you 2 days before they charge you. Tried to cancel and they still ripped me off for $79.95

1★ · Google Play · 2026-04-18

⚠️ this app is too hard to cancel. didn't even use it they charged me $75. negative stars -1000. scary they can trick you like this.

1★ · Google Play · 2026-03-20

Trial converts to a charge

Shown, not confirmed

downloaded the app, worked a few times. For some reason it wasn't loading it would just be a black screen. I got notification of free trial period ending within 2 days and automatically the next day it charged me the whole year. that was…

2★ · Google Play · 2026-04-06

The app is good, but you're conned into a free trial period with a £40+ subscription with no warning, and impossible to find the refund or help option. Classic bait and hope they get distracted tactics. I'll update this if they respond well

1★ · Google Play · 2026-04-04

l cancelled before the end date of my free trial subscription they offered me but I still got charged by Imprint... I feel stolen, worried and it is absolutely not what they told me they would help me for. l innocently accepted your free…

1★ · Google Play · 2026-03-19

A sampled review illustrates one person’s experience. It does not establish a finding on its own.

Measurements

8 measured · 0 not assessed

Supporting measurements. They are not a complete list of possible harms or positives. “Not assessed” means we could not measure it — never zero, never a pass.

From store data and reviews

Developer replies to reviews
Replies to fewer than 1 review in 20
Price in the store description
States no price and billing period
Cancelling, in the store description
Does not say how to cancel
Themes reported by reviewers
3 or more themes reported
Counted from the reviews we have read for this app. "No theme reported" means no theme reached our reporting threshold — it is not a finding that nothing is wrong with this app, and we do not say it is.
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

Android package 3.15.4, scanned 12 Oct 2026. These describe that package, not the current store version.

Sensitive permissions
None requested
Counted against a fixed list of eighteen sensitive Android permissions: sixteen runtime permissions, among them location, camera, microphone, contacts and SMS, and two the user must switch on in system settings, drawing over other apps and usage access. Requesting one is not itself a finding.
Analytics or tracking SDKs in the scanned package
3 or more found
Advertising SDKs in the scanned package
None found
Counted as distinct SDKs in the package we scanned. One mediation bundle can contribute several, so this is not a count of advertisers.

Measurement vocabulary 1.4 · how these are measured

Versions and dates analysed

Assessed 4 Oct 2026

This analysis describes version 3.15.3 of the app, analyzed 2026-10-04 . The app may have changed since.

The store currently lists version 3.15.4, updated 2026-10-01.

The app has been updated since this analysis. The findings on this page describe version 3.15.3, not the version now listed on the store.

Release notes for the newer versions, in the developer’s own words:

Version 3.15.4 · 2026-10-01

No release notes were provided for this version.

Store update history

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

Google Play

Version 3.15.4 · 2026-10-01

No release notes were provided for this version.

Version 3.15.3 · 2026-10-01

No release notes were provided for this version.

Assessment record

Status
Automated analysis
App identifier
imprint-google-com-polywise-lucid
Assessment date
4 Oct 2026
Sources used
3 independent signals: user reviews, the store listing and the store privacy disclosure
Reviews read
423
Package examined
Android · 3.15.4 · scanned 12 Oct 2026
Measurement vocabulary
1.4
Human inspection
Not completed

Assessed 2026-10-04 from 423 user reviews, the store listing and its privacy label. We have not scanned the app's package, so nothing on this page was read from inside the app itself.

How this page was produced

Analyzed 2026-10-04 Version analyzed: 3.15.33 independent signals423 reviews scannedConfidence: HighNot human-reviewedVocabulary v1.13Methodology v1.3
Signals run: user reviews, the store listing and the store privacy disclosure. Not yet checked: SDKs in the app package, the app's own on-screen text and the app manifest.

Store facts

Google Play

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

Google Play

Store rating
4.47 ★ · 13,319 ratings
Version
3.15.4
Updated
1 Oct 2026
Price
Free · In-app purchases
Age rating
4+
Size
Not supplied
Open in Google Play
Developer
Polywise
Category
Education
Listing price
Free · In-app purchases

Purchases the store lists

 What this app sells
Google Play doesn’t publish per-purchase prices, so this list covers the other store only.

Method and limits

What this report can and cannot show

How the automated analysis works

This assessment is produced automatically. Three independent signals are read — user reviews, the store listing and the store privacy disclosure — and each candidate finding is filed under the sources that support it.

No charge stands on one kind of evidence — with one published exception. A finding is either a measured fact that anyone can reproduce (an ad SDK is in the package; every subscription bills weekly; the privacy label omits a tracker we can see), or it is an interpretation — and an interpretation needs independent sources to agree before it reaches the catch list. The exception is a harm only users can see: a charge may publish from reviews alone, as “Reported by N users”, once enough reviewers raise it to clear that charge’s own published bar. That agreement rule is what replaced the human reviewer, not a model’s confidence.

There is no overall score, on purpose. A 0–99 number was published here until 2026-09-15. It was withdrawn because it discriminated too weakly to be the instrument — 44.7% of every pair of apps tied — and because a single number is a verdict where a count is an observation. What publishes instead is a row of measurements, each of which says what was counted and, where we could not look, says that instead.

Findings under One source only are real reports we do not stand behind as findings. They are shown because withholding them entirely would hide a genuine complaint, and labelled because publishing them as charges would be an accusation off a single source.

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 hands-on test can confirm or contradict a finding and adds its own measurements; it does not change a measurement row. Hands-on inspections are not yet open.
Review thresholds Read the methodology For developers

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