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Nibble: Daily Learning & Quiz
Kremital Limited · Education

Analyzed automatically. Assessed 2026-10-05 from 1,001 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.

Analyzed automaticallyConfidence: High3 signal sources1,001 reviews scannedNot human-reviewedas of 2026-10-05
 Which version this describes

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 the analysis found

Each finding shows what agreed and how strongly. Automated analysis

Positive evidence 1

Things this app does right, published at the same strengths as the catch list.

Developer says data deletion can be requested
Measuredfrom the store listingview evidence
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
One source onlyShown, not confirmed — the only source is user reviews.view evidence
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
One source onlyShown, not confirmed — the only source is user reviews.view evidence
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
One source onlyShown, not confirmed — the only source is user reviews.view evidence
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
One source onlyShown, not confirmed — the only source is user reviews.view evidence
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
One source onlyShown, not confirmed — the only source is user reviews.view evidence
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)

What reviewers said

Verbatim excerpts from public store reviews, shown as corroborating user reports. They are not Appworthy audit evidence, and a quotation is not proof of the finding it sits under.

Trial converts to a charge

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…

1★ · Google Play · 2026-09-01

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…

1★ · Google Play · 2026-08-24

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…

1★ · Google Play · 2026-09-23

Hard to cancel

I uninstall the app on my phone because I wasn't using it. And then I've been charged for it more than once. I can't even find a way to uninstall it. So I had to dispute the charge with PayPal and I've sent them an email we'll see if it…

1★ · Google Play · 2026-08-11

not what it's advertised to be and hard to unsubscribe. EDIT: I was charged once again since writing this review. This company knowingly scams people, don't fall for it like many of the people leaving reviews have!

1★ · Google Play · 2026-08-20

Poor service — I canceled the subscription and keep getting charged. When I try to get customer service it continues to send me to the website where it wants me to sign up for the service again. I don’t want the service. I found the…

1★ · App Store · 2026-08-28

Reports that the ads misrepresent the app

bait and switch

2★ · Google Play · 2026-09-29

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…

1★ · Google Play · 2026-09-23

As always after getting information about you, surprise, surprise an abo model app. I despise non clearly marked apps designed to pay. Also: your ads are misleading... Great the developer "is sorry" and this means absolutely nothing....

1★ · Google Play · 2026-08-29

Paywall blocks the basics

Asks a ton of questions just to lock everything behind a paywall. Waste of my time.

1★ · Google Play · 2026-09-18

Can't do anything without paying. don't bother downloading.

1★ · Google Play · 2026-09-10

You can't do anything without paying. it seems like a good app tho, with lots of information and fun ways to learn.

2★ · Google Play · 2026-09-09

Reports of unexpected charges

Absolute scam trap! Avoid at all costs. ​They trap you by making you fill out long forms for 10 minutes, then trick you into what looks like a "trial plan" mandate setup, only to immediately deduct the full annual payment of ₹4,050 right…

1★ · Google Play · 2026-08-14

I paid for the 11.99 subscription and I was charged 42 dollars. please give me a refund as I do not have 42 dollars to waste. edit: this is genuinely the worst customer service i have experienced. my subscription has been cancelled for…

1★ · Google Play · 2026-09-11

Do NOT buy the subscription. I tried the free trial then quickly realized there was nothing to this app. I unsubscribed and STILL got charged. I've been trying to unsubscribe for months and it keeps charging me 30$ every month. Edit: I…

1★ · Google Play · 2026-08-13

What this app sells

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

How the automated analysis works

Automated, corroborated, and never human-reviewed without a person.

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.

 Not yet human-reviewed

Several measurements above say “Not assessed” because no artefact we hold can answer them. A human review is what resolves those — and it can remove a favourable band as easily as add one.

Hands-on inspections are not yet open.

 How this page was produced
Analyzed 2026-10-05 Version analyzed: 11.2.0 (App Store), 1.9.2 (Google Play)3 independent signals1,001 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.