App Intel

Tumbling E Chart

LiveFonlow4 apps · 130.4K installsMedicalFreecom.fonlow.E

Measure distance visual acuity to find early signs of myopia

Alert me★ WatchOpen in Play ↗
Total installs
73,774
exact · Play shows 50,000+
Installs / day
0
since last crawl
Rating
4.6★
84 ratings · 1 reviews
Released
26 Feb 2019
7.6y ago
Last update
9 Apr 2026
v2.8.2 · 6mo ago
Countries
—
not checked yet

Install history

exact counter from Google Play
72.1K79K86K93K100K11 Oct12 Oct13 Oct
72.1K79K86K93K100K11 Oct12 Oct13 Oct

Installs per day · last 90 days

00.30.50.8112 Oct13 Oct13 Oct

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

6 in 3 groups
4 Sensitive0 Notable2 Routine

What this app can do with your phone

  • Read photos, videos, and other files saved in your phone's shared storage
  • Add, change or delete photos, videos and other files in your phone's storage
Photos/Media/FilesSensitive2

Access to photos, videos, music and other files stored on your device

  • Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE
  • Add, change or delete photos, videos and other files in your phone's storagemodify or delete the contents of your USB storage · WRITE_EXTERNAL_STORAGE
StorageSensitive2

Access to files, photos and media saved on your phone's storage

  • Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE
  • Add, change or delete photos, videos and other files in your phone's storagemodify or delete the contents of your USB storage · WRITE_EXTERNAL_STORAGE
OtherRoutine2

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

  • Connect to the internet to load content and send datafull network access · INTERNET
  • Make your phone vibratecontrol vibration · VIBRATE

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

Full description
Designed for children over the age of 6, parents with young children, and general practitioners, this eye chart app displays optically precise optotypes for accurate distance visual acuity measurement. The Tumbling E Chart app supports the Standard Tumbling E by default, while the Modified Tumbling E, which features a shortened middle arm, is optional. Predefined Test Distances: * 6, 5, 4, 3, and 2 meters * 20, 15, 12, 10, and 6 feet Scenarios: 1. Doctor–patient testing 2. Self-diagnosis using a mirror 3. Self-diagnosis using a Bluetooth keyboard Notations Supported: 1. Decimal (0.50) 2. Fraction (20/40) 3. LogMAR (0.30) 4. Fraction (5/10) 5. Fraction (6/12) 6. MAR (2) 7. VAS or VAR (85) Test Modes: 1. Manual 2. Auto Scoring – Swipe gestures indicate correct or incorrect responses, and the app calculates scores automatically. Enable "Record Scores" in Settings to track visual acuity progression, with support for multiple test subjects. Myopia screening typically begins with distance visual acuity testing. A decline in acuity may signal the onset of myopia, allowing for early intervention. Disclaimer: While this app may replace printed eye charts, it CANNOT substitute for doctors or optometrists who perform comprehensive eye exams essential to maintaining eye health. The app does not test for strabismus, esotropia, exotropia, hyperopia, or astigmatism—common early vision conditions. Please consult an optometrist regularly and seek professional medical advice at the first signs of visual acuity issues.

What's new

1. Support 16KB Memory Page Sizes. 2. arm64-v8a only. 3. Adjust the privacy policy to clearly state the data usage.

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