“Bait & Switch The "Free trial" is only available if you agree to be charged for a full year as soon as those 7 days end? And, as far as I can tell, there is absolutely no content available to try so you can determine if you want to take…”
Independent automated assessment · 3 signal sources · 1,001 reviews scanned · analyzed 2026-10-05.
4.3 ★179,274 ratings
1M+Downloads
12+Age rating
134 MBApp size
FreeIn-app purchases
About this app
Meet Nibble — an all-around knowledge app of interactive 10-min lessons & quizzes. Crush your goals and expand your understanding of topics you want to know more about.
Our app combines the best from different learning styles and empowers you to gain more knowledge in less time. Solve practical problems, train your mind, and have fun!
WHAT DO YOU GET WITH NIBBLE?
* Discover interactive and easy-to-follow learning Achieve your goals and become confident in your knowledge. Our content is expert-crafted to create the best learning experience for you.
*Expand your knowledge anywhere, anytime Practice during your morning coffee or lunch break. Do you want to sleep better? Take a lesson or two before bed. Learn at your own pace whenever you have spare time.…
Preview
Real screenshots from the store listing.
Independent evidence report
Evidence and review signals
This is where the page changes from an app-store listing into an evidence report: findings, important reviews, pricing and a dated history.
Which version this describes
When we ran this analysis, and what the store lists now.
App Store
This analysis describes version 11.2.0 of the app, analyzed 2026-10-05 . The app may have changed since.
The store currently lists version 11.2.0, updated 2026-09-11.
Google Play
This analysis describes version 1.9.2 of the app, analyzed 2026-10-04 . The app may have changed since.
The store currently lists version 1.9.2, updated 2026-09-29.
What we measured
Each line is a measurement published as a measurement, never a verdict.
Each line is a measurement, published as a measurement. Where we have not looked, the line says so rather than reading as a zero.
Developer replies to reviews
Replies to at least 1 review in 20
Price in the store description
States no price and billing period
Cancelling, in the store description
Says 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 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 about the app, not a finding about it.
Graded bands · predicate set 1.4 · how these are measured
What the analysis found
App-specific findings, grouped by what each one rests on. How they are graded lives on its own page.
Positive evidence 1
Things this app does right, published at the same strengths as the catch list.
Developer says data deletion can be requested
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.
What we saw: 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
One source only — shown, not confirmed 5
A single kind of evidence. We publish these because withholding them would be the bigger distortion, and we do not treat any of them as a finding we stand behind.
Reported by users: Trial converts to a charge
The free trial demands a payment method up front and/or rolls into a paid subscription with no usable warning.
What we saw: Trial converts to a charge: raised by 6 distinct reviewers (1.1% of 543 reviews scanned)
Reported by users: Hard to cancel
Cancelling the subscription is blocked, hidden, multi-step, or simply does not take effect.
What we saw: Hard to cancel: raised by 11 distinct reviewers (2.0% of 543 reviews scanned)
Reported by users: Reports that the ads misrepresent the app
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.
What we saw: Misleading advertising: raised by 7 distinct reviewers (1.3% of 543 reviews scanned)
Reported by users: Paywall blocks the basics
The core of the app — not extras — sits behind payment, or previously-free function moved behind a paywall.
What we saw: Paywall blocks the basics: raised by 11 distinct reviewers (2.0% of 543 reviews scanned)
Reported by users: Reports of unexpected charges
A large number of reviewers report being charged when they did not expect it — including being charged after cancelling during a free trial, or when a trial turned into a paid plan without warning. We cannot see anyone's billing, so this is published as an attributed user report: what reviewers say, and how many of them said it.
What we saw: Surprise charges: raised by 21 distinct reviewers (3.9% of 543 reviews scanned)
Highlighted reviews
Representative public review excerpts shown as user reports, not Appworthy audit evidence.
“They claim to be similar to Duolingo for learning, but the experience is quite different. They make you spend around 10 minutes filling out a detailed form and collecting a lot of information from you. After that, they require you to…”
“Signed up for a Free trial...Free trial was a lie, instantly charged me over $40 and now tells me I have to go through Google play to request refund. This app is a joke anyways and not what is advertised, it was basically the same…”
Assessment & version history
App changes and Appworthy events in one timeline.
Store listing updated to version 11.2.0.
What this app sells
Useful store-disclosed pricing, kept below the app listing.
Items shown0
Lowest—
Highest—
Google Play does not publish per-purchase prices.