Mileage Tracker

One-time setup

Already set up on another device? Paste the link

On the other device: ☰ → Copy setup to another device → Copy setup link, send it here, paste it above, and tap Import.

Your name

Business / firm (optional)

Vehicle

My home is my principal place of business (home office)

Hides the “Commuting” option, because a home office means no commute. You can change this anytime in Settings.

Google Apps Script Web App URL

Must be an https://script.google.com/…/exec URL from your own Sheet.

Shared secret (paste this into your Apps Script too)

—

Auto-generated and stored only on this device. It authenticates this app to your Sheet.

Your name, vehicle, URL, secret, and any unsynced trips are stored only in this browser (localStorage). Nothing is sent to any server except your own Google Sheet.

Odometer

Start

End

0

miles

Classification & purpose

Classification

Date

Sync status

All synced

Each saved trip posts directly to your personal Google Sheet. Offline entries are queued on this device and retried automatically.
Not tax advice — keep your own records and consult your tax advisor.

Vehicles & businesses

Vehicles

Add more than one to get a vehicle picker when logging. Each trip is tagged with its vehicle, so one Sheet covers all your cars.

Businesses / firms

Add more than one to get a business picker when logging — handy for a side business or consulting work.

IRS Schedule C info

Settings and figures that feed your Schedule C vehicle section.

Home office

Flagging a home office matters because, with one, drives from home to your work locations count as deductible business miles instead of nondeductible commuting.

My home is my principal place of business (home office)

When on, the “Commuting” classification is hidden, because a home office means no commute. Changing this only affects future trips — past entries keep their classification.

Annual odometer

Record your odometer at the start and end of the tax year; the difference is your total miles for the year (and your business-use % if you use the actual-expense method). The IRS asks for total miles even under the standard mileage rate. Saved to the Odometer tab.

Tax year

Odometer on Jan 1

Odometer on Dec 31

Reading source

Actual is best; a reasonable estimate from service records is acceptable. Enter just one now (e.g. Jan 1) and the other later if you like.

Not tax advice. This tool helps you keep contemporaneous records; it doesn’t determine what’s deductible or which method to use. Confirm the standard-mileage vs. actual-expense choice and your recordkeeping with your own tax advisor.

IRS guidance (2026)

The 2026 business standard mileage rate is 72.5¢ per mile. Useful IRS references (open in a new tab):

2026 standard mileage rate — news release Standard mileage rates (all years) Topic 510 — Business use of car Pub. 463 — Travel, Gift & Car Expenses Schedule C instructions (Part IV — vehicle)

Not tax advice. Links are provided for convenience; confirm anything tax-related with your own advisor.

User guide & FAQ

A fast, private mileage logger. Trips go straight to your own Google Sheet — no account, no fees, and it works offline.

Install on your iPhone

Open business-mileage-log.pages.dev in Safari (this matters — Add to Home Screen and voice dictation need Safari).
Tap the Share icon → Add to Home Screen → Add.
Launch it from the new icon — it runs full-screen and works with no signal.
Can’t find the icon? Swipe down on the Home Screen and search “Mileage”, or look in the App Library.

One-time setup (your Google Sheet)

On a computer, open Menu ▸ Set up Google Sheet (computer) and follow the steps: create a Sheet, paste the script (your key is filled in), deploy it as a Web app, and paste the resulting /exec URL into Setup. To copy your settings to your phone, use Menu ▸ Copy setup to another device and scan the code with your Camera.

Log a trip

Enter the start and end odometer (tenths of a mile are fine). Tap Start = last trip’s end to chain trips quickly.
Pick a classification, and for business add a purpose — tap a chip, dictate, or type (a purpose is required for business trips, per IRS §274(d)).
Tap Save trip. Miles are calculated for you.

Business = deductible work driving. Commuting = home ↔ your regular office (not deductible, but the IRS wants the yearly total). Personal = everything else.

Schedule C info

Under Menu ▸ Schedule C info: set Home office (if your home is your principal place of business, drives from home to work sites are business miles, not commuting), and record your annual odometer on Jan 1 and Dec 31 for each tax year — the difference is your total miles (and business-use % for the actual-expense method). Tap Save.

More than one vehicle or business

Add them under Menu ▸ Vehicles & businesses. A picker appears on the logging screen only when you have more than one, so single-vehicle logging stays one tap.

Offline & syncing

No signal? Entries are saved on your phone and sync automatically when you’re back online. You can also tap Sync now on the logging screen.

FAQ

Is my data private?

Yes. Everything goes only to your own Google Sheet — there’s no central server and no shared database. Your name, vehicle, the Sheet’s address, and your key are stored only on your device.

How secure is my data?

Your trips travel directly from your phone to your own Google Sheet over an encrypted (HTTPS) connection — they never pass through any server the developer runs, so there’s no central database that could be breached. Only people you’ve shared your Sheet with can read it, protected by your Google sign-in. A private key, generated on your device, is required to add any row, so even someone who found your Sheet’s web address couldn’t write to it. The script asks Google for the narrowest permission — your one spreadsheet, not your whole Drive — and your settings and key are stored only in this device’s browser, never in the app’s code and never sent to anyone. For the strongest protection, secure your Google account with a strong password and two-factor authentication, and share your setup QR or link only with yourself.

Does it cost anything?

No. It runs free on your phone and writes to your free Google Sheet. There are no accounts or subscriptions.

Why Safari and not Chrome on iPhone?

On iOS, Add-to-Home-Screen and reliable voice dictation only work in Safari. If you open the link in Chrome, the app will nudge you to switch.

My phone and computer show different setups — why?

Each browser and device keeps its own settings (by design, for privacy). Use Copy setup to another device (or the “Copy setup link” option) to copy your settings — including your key — from one device to another.

Do I have to log personal trips?

No. Log your business (and commuting) trips, then record your Jan 1 and Dec 31 odometer under Schedule C info so total miles — and your business-use % — are available.

I made a mistake — can I fix it?

Yes. Open your Google Sheet and edit or delete the row directly. The app only adds rows; it never changes past ones.

“Could not reach the script” when I test the connection.

In your Apps Script deployment, make sure Who has access is set to Anyone, and that you pasted the long Web app URL ending in /exec (not the Deployment ID).

I saw a “Google hasn’t verified this app” warning.

The current script avoids that — it only touches your one spreadsheet. If you authorized an older version before, set up with a fresh Sheet and the latest script for the clean screen.

How do I update the script later?

Open Menu ▸ Set up Google Sheet (computer), tap Copy script (your key is filled in), paste it over the old code, Save, then redeploy with Deploy ▸ Manage deployments ▸ ✏️ Edit ▸ New version ▸ Deploy — that keeps your existing /exec URL.

How do I total my miles at year end?

Open the Summary tab — it shows your Business miles and an estimated standard-mileage deduction per year, updating automatically (fill in each year’s IRS rate; 2026 = 0.725). For more detail, on the Trips tab use a Pivot Table (rows = Business or Vehicle, values = SUM of Miles); pivoting by Classification gives the Schedule C Part IV split. The Odometer tab gives total miles (end − start) for your business-use %.

Not tax advice. This app helps you keep contemporaneous records; confirm your method and recordkeeping with your own tax advisor.

Google Sheet connection

Advanced — you set this up once. You normally don’t need to change it again.

Name

Webhook URL

Shared secret

—

Set up your Google Sheet

Do this once, on a computer (the Apps Script editor needs a desktop browser).

Go to sheets.new and name the sheet (e.g. “Mileage Log”).
Extensions ▸ Apps Script. Rename the project to Mileage Tracker.
Delete the sample code, tap Copy script below, paste it in, and Save.
Deploy ▸ New deployment → gear ⚙ → Web app. Set Description: “Mileage Tracker”, Execute as: Me, Who has access: Anyone → Deploy → approve (normal consent, no warning).
Copy the Web app URL (the long one ending in /exec — not the “Deployment ID”) and paste it into the Webhook URL box on the Setup screen.

No editing needed — your shared key is already inserted.

Step 4 — your Deploy dialog should match this

DescriptionMileage Tracker

Execute asMe

Who has accessAnyone

Step 5 — copy the URL ending in /exec

https://script.google.com/macros/s/AKfy…/exec

Use the Web app URL (it ends in /exec) — not the “Deployment ID”.

Already set up and just re-pasting an updated script? Skip steps 1–2 and the URL step. After you Save, redeploy with Deploy ▸ Manage deployments ▸ ✏️ Edit ▸ Version: New version ▸ Deploy — that keeps your existing /exec URL, so nothing else changes.

Copy setup to another device

On your phone, open the Camera app, point it at this code, and tap the link that appears — your name, vehicle, webhook, and key transfer over automatically. Then use Share ▸ Add to Home Screen.

⚠️ This code/link carries your shared key — only scan it with your own devices.