Safe Stamper vs VibMeasure

Safe Stamper is a service designed to certify the exact date, hour and place in which a photography was shot or a video or audio was recorded from your mobile device. When shooting photos or recording videos or audios from the app, you will receive as evidence of what you photographed or recorded, and the exact date, time and location, a certified file which includes: - A copy of the photograph or information identifying the recording (snapshot, duration, file size and cryptographic hashes). - The coordinates from the mobile device’s geolocation system. - Safe Stamper’s electronic signature, along with the corresponding timestamp, as evidence of the certificate’s integrity and the date and time when the certification was made. This app requires a Safe Stamper user account.

Floor Vibration Velocity Analysis is a tool that uses the iPhone's built-in sensors for vibration measurement and spectrum analysis. It's suitable for initial on-site observation, floor vibration trend checking, and daily measurement record organization. The app automatically analyzes Z-axis acceleration data after measurement, providing time-domain waveforms, dominant frequency, frequency band dominant frequency, fixed bandwidth velocity spectrum, 1/3 Octave velocity RMS, and overall velocity RMS, helping users quickly understand vibration characteristics. Measurement results can also be exported as a CSV file for easy subsequent organization and comparison. Main Functions: Displays real-time Z-axis acceleration values Customizes sampling rate and high-pass cutoff frequency Automatically performs spectrum analysis after recording Displays full-frequency peak and dominant frequency within a specified frequency band Displays overall velocity RMS Displays fixed bandwidth velocity spectrum Displays 1/3 Octave velocity RMS Exports measurement data as a CSV file Suitable Use Cases: Initial measurement of floor micro-vibration Observation of vibration during indoor equipment operation Comparison of repeated measurements at the same location Quick on-site inspection and record organization