Simple Calendar 2026 is a highly customizable, offline monthly calendar app f…
Simple Mobile ToolSerious warnings 2 confirmed warnings. Checked: 400 reviews, the Android app’s code, the store listing and the privacy label.
From our automated analysis, 27 Oct 2026. Every label links to its evidence in the full report below.
This analysis describes version 6.1.6 of the app (the version number recorded inside the package we inspected), analyzed 2026-10-27 .
The store currently lists version 6.1.6, updated 2026-02-16.
Store screenshots supplied by the developer.
Simple Calendar 2026 is a highly customizable, offline monthly calendar app for Android. Have an agenda planner in your pocket, designed to do exactly what a personal tiny schedule planner should do in 2026. No complicated features and unnecessary permissions! It supports syncing events via Google Calendar or other calendars supporting CalDAV protocol.
Take Control of Your Time
Whether you are looking for a work calendar for a business, a day planner, an appointment scheduler, or organization and scheduling of single and recurring events like birthdays, anniversaries, appointment reminders, or anything else, Simple Calendar 2026 makes it easy to stay organized. The calendar widget has an incredible variety of customization options: customize event reminders, notification appearance, tiny calendar reminders widget, and overall appearance.
Schedule Planner: Plan Your Day…
From the developer’s store description.
For developers and the curious
The evidence, sources, measurements and versions behind every label above.
Findings that met the published evidence standard.
Bundles 8 distinct ad networks / mediation SDKs: Amazon Publisher Services, AppLovin MAX, Fyber / Digital Turbine Exchange, Google Mobile Ads (AdMob / Ad Manager) and 4 more
The package embeds several distinct advertising or mediation SDKs — a stack built for ad volume, not for a single house ad.
Package artefact
Appworthy
sha256:7acd3cd135c011e1ea7613cf6a04e7496531308302d069a4868a77bcc6442bc2Aggressive ad load: raised by 29 distinct reviewers (about 1 in 14 reviews we read)
Advertising volume or placement that interrupts normal use: ads between every action, unskippable or forced full-screen ads.
Specific evidence of a useful property, within the stated scope.
Offers a one-time or lifetime purchase: "This feature is locked, please purchase <a href=https://play.google.com/store/apps/details?id=com.simplemobiletools.thankyou>Simple Thank You for unlocking the full app. It is a one time payment onl…
The app's own text offers a one-time or lifetime purchase, or reviewers report that the price is stated clearly.
Package artefact
sha256:7acd3cd135c011e1ea7613cf6a04e7496531308302d069a4868a77bcc6442bc2The 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
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 observations that have not cleared the evidence bar.
Sells a randomised reward ("Number") and states no drop rates or odds anywhere in the app's own text
This observation has not cleared the required evidence standard.
The app sells randomised rewards — crates, chests, packs, pulls — and states no drop rates or odds anywhere in its own text, so what the money buys is unknowable before paying.
Package artefact
sha256:7acd3cd135c011e1ea7613cf6a04e7496531308302d069a4868a77bcc6442bc2The app's own text says: "Create shortcut (Pro)"
This observation has not cleared the required evidence standard.
Advancement or competition is gated behind spending money rather than playing.
Package artefact
sha256:7acd3cd135c011e1ea7613cf6a04e7496531308302d069a4868a77bcc6442bc2The app's own text says: "Also note that this app version is no longer being developed, get the Pro one for many improvements."
This observation has not cleared the required evidence standard.
The core of the app — not extras — sits behind payment, or previously-free function moved behind a paywall.
Package artefact
sha256:7acd3cd135c011e1ea7613cf6a04e7496531308302d069a4868a77bcc6442bc2Deadline pressure in the app's own copy: "Limited time offer"
This observation has not cleared the required evidence standard.
The app's own purchase copy attaches a deadline to buying — a countdown, 'offer ends in', 'limited time' — or ships a countdown view on a purchase-screen layout.
Package artefact
sha256:7acd3cd135c011e1ea7613cf6a04e7496531308302d069a4868a77bcc6442bc2The app's own text says: "Continue"
This observation has not cleared the required evidence standard.
The app's own screens offer a way past sign-up — guest access, skipping, or browsing before registering — rather than gating the product behind an account. The store's privacy disclosure is checked alongside it: that disclosure is self-reported, so it corroborates this credit rather than establishing it.
Package artefact
sha256:7acd3cd135c011e1ea7613cf6a04e7496531308302d069a4868a77bcc6442bc2400 reviews read for this analysis. Each observation keeps the sample and store it was based on.
Products from Simple used to be good but at some point they became Simply Ads. You can't open the app without an unskipable ad for other Simple products. If you place a reminder on the calendar you'll then get an unskipable ad with no…
This app was great but they just ruined it with endless advertising anytime you open it or navigate within.
*DO NOT GET THIS APP* If I could rate a -☆ I would. Like the old saying goes, "If it ain't broke, don't fix it." I used to love this app. The ads are too much, especially when making an appt at the drs office. Right off the bat, there's…
A sampled review illustrates one person’s experience. It does not establish a finding on its own.
“Not assessed” means we could not measure it. It is never a zero and never a pass.
Android package 6.1.6, scanned 27 Oct 2026. These describe that package, not the current store version.
Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured
This analysis describes version 6.1.6 of the app (the version number recorded inside the package we inspected), analyzed 2026-10-27 .
The store currently lists version 6.1.6, updated 2026-02-16.
Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.
No release notes were provided for this version.
simple-calendar-google-com-simplemobiletools-calendarAssessed 2026-10-27 from 400 user reviews, the app's package, the store listing and its privacy label.
What the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.
This assessment is produced automatically. Six independent signals are read — user reviews, SDKs in the app package, the app's own on-screen text, the app manifest, 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.
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.