# Commute Calculator V2.0 > Logs commutes, tasks & lunches. Export day-stamped JSON with SHA-256 hashes. Canonical page: [https://chrome-stats.com/d/app.unit741.commutecalc](https://chrome-stats.com/d/app.unit741.commutecalc) ## Overview - **ID:** `app.unit741.commutecalc` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** Douglas Wiseman - **Category:** BUSINESS - **Downloads:** 81 - **Version:** 2.0.13 - **Last updated:** 2026-01-13 - **First published:** 2025-09-04 - **Publisher country:** US - **Size:** 4.31 MB - **Data as of:** 2026-09-10 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=app.unit741.commutecalc) - **Website:** [https://sites.google.com/view/commute-calculator-privacy/home](https://sites.google.com/view/commute-calculator-privacy/home) - **Privacy policy:** [https://sites.google.com/view/commute-calculator-privacy/home](https://sites.google.com/view/commute-calculator-privacy/home) ## Description Commute Calculator is a privacy-first time & commute tracker designed for people who just want clean records of where they went and when—without accounts, ads, or hidden uploads. Keep a simple daily log of jobs and trips, then export an end-of-day (EOD) snapshot you can store anywhere (Google Drive, local storage, USB, etc.).

WHAT IT DOES
• Track commute durations and job time locally on your device
• Set a start time offset to match your schedule (e.g., shift start)
• See totals for the day at a glance
• Export a timestamped daily snapshot (JSON) with a matching SHA-256 file for integrity verification

WHY IT’S DIFFERENT
• No account, no analytics, no background data collection
• You choose where files go using the system file picker
• Each export is “immutable”: includes createdUTC, createdLocal, time zone, day of week, app version/build, device model/OS info, and your configured start time (display, local ISO-8601, and UTC)
• A .sha256.txt sidecar lets anyone confirm the JSON wasn’t changed after export

HOW EXPORT & VERIFICATION WORK

Tap “Export Daily Snapshot”. Choose a folder.

The app saves two files:
– EOD_Timestamp_YYYY-MM-DD_Day_HH-mm-ss.json
– EOD_Timestamp_… .sha256.txt (contains the hash and filename)

To verify later, compute the SHA-256 of the JSON and confirm it matches the value in the .sha256.txt file. If they match, the snapshot content hasn’t been altered since export.

PRIVACY
• Runs entirely on device; data is saved only where you tell the system to save it
• No ads, trackers, or third-party SDKs for analytics
• Network is not required for core features

PERMISSIONS
• File access is via the Android system “Save As / Open” screens—used only when you export or import

WHO IT’S FOR
• Contractors, technicians, field workers, caregivers, and anyone who needs simple, trustworthy commute/time documentation for reimbursement, invoicing, or dispute resolution

HIGHLIGHTS
• Fast: minimal taps to log commutes and totals
• Clear: human-readable, ISO-8601 timestamps with time zone
• Trustworthy: cryptographic hash for tamper-evidence
• Flexible: store exports anywhere the Files app can reach

SUPPORT
Questions or feature requests? Contact: douglas.wiseman@gmail.com

Note: This app provides documentation and integrity tools, but it is not legal advice. ## Rankings - #2,055,076 — Overall ## Permissions and access ### Permissions - `app.unit741.commutecalc.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` - `com.android.vending.CHECK_LICENSE` ## Similar extensions and apps - [Commute Timer](https://chrome-stats.com/d/com.atoyapps.commutetimer) — 36 users - [Commute Tracker](https://chrome-stats.com/d/dz.gg.store.commuter_tracker) — 43 users - [Commute Time Tracker](https://chrome-stats.com/d/hjw.app.myworktime) — 8 users - [Go Extra Mile: Commute & Earn](https://chrome-stats.com/d/com.goeleventhmile) — 16,887 users - [通勤時間 記録](https://chrome-stats.com/d/tokyo.yuz.commute_time) — 60 users - [Bike Tracker: Commute Logger](https://chrome-stats.com/d/com.cooltime.bike_tracker) — 65 users - [Trip Log](https://chrome-stats.com/d/net.stepanow.fahrtenbuch) — 154 users - [Simple Commute Cost Calculator](https://chrome-stats.com/d/com.RZ.SimpleCommuteCostCalculator) — 56 users - [Team Tracker](https://chrome-stats.com/d/com.goforthdevelopment.hoursmanager) — 1 users - [ShiftLog](https://chrome-stats.com/d/com.recribel.shiftlog) — 31 users - [Local FuelLog](https://chrome-stats.com/d/ch.glab.app.fuellog) - [Caiser Track](https://chrome-stats.com/d/de.caiser.track) — 6 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/app.unit741.commutecalc)