ModuMeter: 5G Signal Meter

ModuMeter is a field measurement app for telecom facility inspections and site maintenance. With one phone, you can check 5G and LTE signal strength (RSRP), sound level, light (illuminance), vibration, surface level, barometric pressure and altitude, and RF/NFC card reading, then save your findings as measurement capture images and structured records.

■ 5G & LTE Signal Meter
· Live RSRP on a 270° dial with 5 color-coded quality bands from Excellent to Very Poor.
· View RSRQ, SINR, RSSI alongside carrier, band, PCI, TAC, and Cell ID.
· Inspect neighbor cells reported by the handset ranked by signal strength to spot cell interference.
· Track the last 60 seconds on a live trend chart with min, average, max, and fluctuation range.

■ Field Sensor Tools
· Sound meter: Shows estimated dB(A) from microphone input along with average (Leq), max, and peak levels.
· Light meter (lux): Displays illuminance in lx or fc and compares it against reference ranges for rest, general indoor, reading, and precision work.
· Vibration: Shows X, Y, Z axes, linear acceleration RMS, and peak values.
· Bubble level: Shows roll, pitch, and percent grade, and saves once held steady within your configured tolerance.
· Barometer & altitude: Shows pressure (hPa, kPa, mbar, inHg) and barometric altitude based on reference sea-level pressure.
· Hold reading: Freeze the live value on screen like a handheld meter to read or save it comfortably.

■ RF/NFC Card Tester
· Test a card or tag once or 5 times in a row to check read success rate and average recognition time.

■ Site-Based Records & Export
· Create measurement targets by building, floor, location, and equipment, and start measuring for any target right away.
· Save and share measurement results as PNG capture images—choose whether to include the 60-second chart, neighbor cells, and GPS coordinates.
· Browse all records on a date timeline and filter by Signal, Sensors, RF/NFC, or Unassigned.
· Export records as a PDF summary, CSV spreadsheet, or ZIP evidence bundle.

■ Privacy & Local Storage
· No sign-up or login required.
· Readings and photos stay on this device and are never uploaded to a server. Sharing only happens through apps you choose.
· No ad SDKs or analytics SDKs.
· Location permission is used only for cell info and when you manually add current coordinates; the microphone is used only while measuring sound.

■ Frequently Asked Questions
Q. How do I check 5G signal strength on my phone?
A. Open the app and tap 'Quick Measure' to see live RSRP on the dial. -80 dBm or higher is Excellent, and -110 dBm or lower is Very Poor.

Q. What do RSRP, RSRQ, and SINR mean?
A. RSRP measures cell signal power, RSRQ indicates signal quality, and SINR is the signal-to-interference-plus-noise ratio. Checking all three together helps you tell whether poor reception comes from weak coverage or interference.

Q. Can I use the sound meter for official compliance testing?
A. No. Readings are estimates from the phone microphone and vary by device and mic placement. Use a certified sound level meter for legal compliance or personal noise exposure assessment. You can compare and calibrate against a reference meter inside the app.

Q. Does the app work offline without an internet connection?
A. Yes. All measurements and records run locally on your device.

Q. Is ModuMeter available on iPhone?
A. Android only for now.

■ Please Note
ModuMeter is a field reference tool that displays readings reported by your phone. It does not replace professional RF analyzers or certified sound and light meters, and cannot be used as official diagnostic, audit, or certification documentation. Some devices may not provide certain sensors or cellular metrics.

Contact: kim@seedbox.one

Recent changes:
Added support for English, Japanese, Spanish, Brazilian Portuguese, and Indonesian.
Localized measurement screens, records, result images, and export text.