Add an asset
Click Add Asset and enter a name, a category, the purchase date and the price paid. These four fields are all the tool needs. A photo, notes and the expected lifespan are optional and can be added later.
Asset TrackerFree Asset Lifespan Tracker
Record what you own, watch each item's value fall with three depreciation methods, and get warned before a warranty runs out. Your records stay in your browser: nothing is uploaded.
0
Total Assets
$0
Original Value
$0
Current Value
$0
Total Depreciation
0
Expiring Warranties
Recent Assets
Warranty Alerts
January 2025
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Upcoming Warranty Expirations
Assets by Category
0
Total
Value by Category
Portfolio Value Over the Last 12 Months
📦
Select an asset
📦
Select an asset
Warranty Reminders
Show an asset in the alerts 30 days before its warranty ends
Show an asset in the alerts 14 days before its warranty ends
Show an asset in the alerts 7 days before its warranty ends
Values
Used for every new asset; each asset can still have its own
How amounts are shown; the tool does not convert them
Your Data
Export all data
Save every asset, photo, issue and setting as one file
Import data
Load an exported file; it replaces the records in this browser
Clear all data
Delete every asset from this browser
How to Track Your Assets: Step-by-Step
Set the lifespan and method
Give the item an expected lifespan in years, a salvage value (what it will still be worth at the end) and a depreciation method. Straight line suits most household items; declining balance suits electronics that lose value quickly.
Enter the warranty dates
Type the warranty start and end dates from the receipt or the manufacturer's registration. The dashboard, the calendar and the asset list all use the end date to tell you how many days of cover are left.
Read the dashboard
The dashboard adds everything up: how many assets you have, what you paid, what they are worth today, how much value has gone, and which warranties end soon. Click any recent asset or alert to open its detail page.
Check the calendar and statistics
The Warranty Calendar marks every expiry date on a month view and lists the next ten. Statistics breaks your assets down by category and plots the portfolio's value over the last twelve months. Compare puts two items side by side.
Back up with Export
Your records live in this browser only. Click Export now and then to save them as a file, and keep that file with your other backups. Import loads the file into any browser, on any device.
Why Choose Asset Tracker?
🔒 Private by design
Serial numbers, prices and photos of your belongings are exactly the kind of data you do not want on someone else's server. This tool has no server side at all: the records are written to your browser's own storage and never leave your device.
📉 Three depreciation methods
Straight line, declining balance and double declining balance, chosen per asset, with a salvage value floor. The detail page draws the value curve year by year so you can see where an item is on its way down.
🔔 Warranty alerts that work
Thirty, fourteen and seven days before a warranty ends the asset moves into the alerts, and expired cover is flagged too. Each reminder can be switched off, and a calendar shows the whole year at a glance.
🧾 An issue log per asset
Note a flickering screen or a rattling motor on the day you notice it. When you call the manufacturer, the dated history is already written, and the comparison view shows how many issues each item has had.
📤 Your data in a file
Export writes every record, photo, issue and setting into one file that you own. Keep it with your backups, move it to a new computer, or open it in any text editor: the format is plain and readable.
⚡ Nothing to install, nothing to pay
Open the page and start. There is no account, no subscription and no limit on the number of assets. The tool works on a phone, a tablet or a desktop, in any modern browser.
Understanding Depreciation
Depreciation is the fall in an item's value over the years you own it. Accountants use it to spread the cost of equipment across its useful life; at home it answers a simpler question: what is this thing worth now? The answer matters when you insure your belongings, sell something second-hand, decide whether a repair is worth paying for, or just want to know how much of your money is sitting in the garage. Asset Tracker works it out from four numbers you enter: the price paid, the expected lifespan in years, the salvage value at the end of that life, and the method.
Straight line
The same amount is lost every year. Take the price, subtract the salvage value, and divide by the lifespan: that is the yearly loss. A 1,000 sofa with a 10-year life and no salvage value loses 100 a year, so it is worth 500 after five years.
Best for: furniture, tools, appliances and anything that wears evenly.
Declining balance
A fixed percentage of the remaining value is lost each year, so the biggest drop comes first and the curve flattens later. The rate is one divided by the lifespan: a 5-year item loses 20 percent of what it is still worth every year.
Best for: phones, laptops and cameras, whose resale value falls fastest when new.
Double declining balance
The same idea at twice the rate. A 5-year item loses 40 percent of its remaining value each year: a 1,000 laptop is worth 600 after one year, 360 after two and 216 after three. The value never falls below the salvage value you set.
Best for: items that are outdated long before they stop working.
The calculations use the exact number of days since the purchase date, so a value shown in the middle of a year is the value for that day, not for the end of the year. The chart on each asset's detail page plots whole years, which is easier to read. Whatever method you choose, the figure is an estimate: the second-hand market, the condition of the item and the demand for it decide the real price. Treat the number as a guide for insurance and replacement planning, not as a valuation.
Keeping Track of Warranties
Why the end date matters
Most consumer warranties run one or two years from the purchase date, and most claims are refused for one reason: the cover had already ended. A reminder a month before expiry gives you time to test the item properly and report a fault while the manufacturer still has to fix it.
What to record with the asset
Put the model and serial number in the notes, attach a photo of the receipt or the item, and write down where the paper receipt is. When something breaks, everything the support line asks for is on one page, and the issue log already has the date you first noticed the problem.
Extended and manufacturer cover
An extended warranty bought from the retailer usually starts when the manufacturer's cover ends, not on the purchase date. Enter the later end date as the warranty end so the alerts reflect the cover you actually have, and note the policy number in the notes.
A Home Inventory Pays for Itself
Insurers ask for the same thing after a burglary, a flood or a fire: a list of what was lost, when it was bought and what it cost. Few people can write that list from memory. A tracker filled in as you buy things, with a photo and the receipt, turns a stressful week of guesswork into an export of a file. The total on the dashboard also tells you whether your contents cover is high enough; many households find their electronics alone are worth more than they assumed.
The same records are useful long before anything goes wrong. The Compare page shows which of two similar items has held its value and which has needed more repairs, which is a fair way to decide what to replace first. The statistics page shows where your money has gone by category, and the twelve-month chart shows how quickly the whole collection is losing value. When you sell an item, the current value gives you a realistic starting price, and the issue log tells the buyer exactly what has been fixed.
Because the records are stored in your browser, they are as private as anything on your own computer. Nothing is uploaded, no account is created and no one else can see the list. The flip side is that you are responsible for backing it up: a browser reset, a cleared cache or a lost device takes the records with it. Export regularly, keep the file with your other important documents, and import it after a change of computer. The file holds every asset, photo, issue and setting, so one import restores the lot.
Frequently Asked Questions
Where is my asset data stored?
In your browser's own storage on this device. Nothing is sent to a server, so the records exist only in the browser and device you used. Clearing the site's data in the browser removes them, which is why the tool offers an export: save the file somewhere safe and import it when you need it again.
Are my photos uploaded anywhere?
No. A photo you attach to an asset is read by the browser and stored next to the record in the same local storage. It never leaves your device. Photos must be under 5 MB each.
Which depreciation methods are available?
Straight line (the same amount lost every year), declining balance (a fixed percentage of the remaining value every year) and double declining balance (twice that percentage). You choose a method per asset and set a default in Settings. The value never drops below the salvage value you enter.
How do the warranty alerts work?
The tool compares each warranty end date with today's date when the page is open. An asset appears in the alerts 30, 14 and 7 days before its warranty ends, and after it has expired. You can switch each of the three reminders off in Settings. There are no emails or push notifications: the alerts are shown on the dashboard and the calendar.
Can I move my records to another device or browser?
Yes. Export writes every asset, its photos, issues and your settings into one file. Open the tool on the other device and import that file. Import replaces what is there, so export from the other device first if it holds records you want to keep.
Which currency does the tool use?
US dollars by default. Pick another currency in Settings and every amount on the page is shown in it. The tool does not convert amounts; it only changes how they are displayed.
Is the tool free, and do I need an account?
It is free, with no registration and no limit on the number of assets. Like every page on ZeroDataUpload, it is supported by advertising.
Why do my records disappear in a private window?
Private or incognito windows discard site storage when they close. Use a normal window for records you want to keep, and export a backup from time to time.