Smart Ruler

Name: Smart Ruler
Rating: 3.56 (13214 reviews)
Author: Smart Tools co.

LiveSmart Tools co.34 apps · 199.3M installsToolsFree · contains adskr.sira.ruler

Measure the length of a small object with your phone.

Alert me ★ Watch Open in Play ↗

Total installs: 4,096,562
Installs / day: +1
Rating: 3.6★
Released: 13 Jun 2010
Last update: 20 Jul 2026
Countries: —

Installs per day

gain of the exact counter

Daily tracking since 10 Oct 2026 · history grows every day

Install history

exact counter from Google Play

3dAll

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.

Data safety

declared by the developer on Google Play

No data shared with third parties
No data collected
Data is encrypted in transit
No way to ask for data deletion

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

4 in 1 group

0 Sensitive1 Notable3 Routine

OtherNotable4

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

Keep your phone's processor or screen from going to sleep, which can use more batteryprevent device from sleeping · WAKE_LOCK
Check whether you are online and whether you use Wi-Fi or mobile dataview network connections · ACCESS_NETWORK_STATE
Connect to the internet to load content and send datafull network access · INTERNET
Make your phone vibratecontrol vibration · VIBRATE

Read more · all 4 permissions Show less

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

Download

Full description

Smart Ruler is in the 1st set of the Smart Tools collection. This app measures the length of a small object by touching the screen. Usage is very simple. 1. Put an object on the screen of your device. 2. Adjust the object to the left of the screen. 3. Touch the screen, adjust the red line and read the length. * Main features : - Multi-touch - Meter <-> Inch - Background color - Material design I calibrated the app on a lot of Android devices. If it is not accurate, you can enter the actual width with [Calibration] menu. * Pro version added features: - No ads - Caliper mode - Architectural and Engineering scales - Ruler extension - Protractor, level, thread pitch * Do you want more tools? download [Smart Ruler Pro] and [Smart Tools] package. For more information, watch YouTube and visit the blog. Thank you.

What's new

- v1.7.3 : Scale - v1.7.2 : More models are calibrated

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