512

Lock

LiveDavid Waiengnier1 app · 187 installsEducationalFreepragmasoft.ecluse

Learn how a lock works

Alert me★ WatchOpen in Play ↗
Total installs
187
exact · Play shows 100+
Installs / day
0
7-day avg · last day 0
Rating
—★
— ratings · — reviews
Released
4 Aug 2024
2.2y ago
Last update
10 May 2026
v2.0.8 · 5mo ago
Countries
—
not checked yet

Installs per day

gain of the exact counter

No change in the counterOur first day-to-day reading of the counter. The line starts with the next one.

Daily tracking since 10 Oct 2026 · history grows every day

Install history

exact counter from Google Play
18618718810 Oct11 Oct
0501001502004 Aug 202410 Oct 202611 Oct 2026

Dashed: estimate from the release date (no daily data before 10 Oct 2026) · time axis compressed before that day

Daily tracking since 10 Oct 2026 · history grows every day

Change timeline

Full history

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Manifest analysis reads only the required APK ranges. Base APK downloads may need separate device splits to install.

Data safety

declared by the developer on Google Play
  • No data shared with third parties
  • No data collected
  • Follows the Play Families Policy

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

1 in 1 group
0 Sensitive0 Notable1 Routine
OtherRoutine1

Access to miscellaneous device features that don't fit other categories

  • Connect to the internet to load content and send datafull network access · INTERNET

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Screenshot 1 Download
Screenshot 2 Download
Screenshot 3 Download
Screenshot 4 Download
Screenshot 5 Download
Full description
Lock simulation Based on the trial-and-error learning technique, this simulation shows how a lock works. The control panel allows you to operate gates, valves and lights. Explanatory messages provide food for thought in the event of unsafe or inappropriate operation. The simulation allows you to open all the gates at the same time, which is not realistic, but it does teach you about communicating vessels.

What's new

Improved message colors + version number correction

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