Time Master + Billing

Time Master + Billing

by On-Core Software LLC

1 ratings
182 reviews
#125 in paid Business
💼 Business
📊 Productivity
$9.99
In-App Purchases

Details

  • Released
  • Updated

Features

Time Master + Billing screenshot #1 for iPhone
Time Master + Billing screenshot #2 for iPhone
Time Master + Billing screenshot #3 for iPhone
Time Master + Billing screenshot #4 for iPhone
Time Master + Billing screenshot #5 for iPhone
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About

This app helps professionals track their time and expenses for billing purposes. It offers flexible billing rates, powerful rounding options, and detailed reporting. It's designed for consultants, attorneys, and contractors who need to manage their billable hours and costs efficiently.

Track time by start/stop or duration
Multiple running timers
Client, Project, and Task categorization
Flexible billing rates
Time rounding options
Expense tracking (mileage, meals, etc.)
Exportable reports (HTML/CSV)
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What users say

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What's New in Time Master + Billing

7.0.1

May 28, 2026

UI fixes What's new in 7.0: Added new Time Master Client option (subscription). Time Master Client is a new separate app. Perfect for contractors, service companies, and any business with field staff, Time Master Client lets workers in the field effortlessly track time, log expenses, and optionally generate invoices — all from their device. When the job is done, data syncs seamlessly back to the Time Master + Billing app, keeping your office and field teams perfectly in sync. Fixed issue with Badges on iOS 17+.

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Subscription plans

Time Master Client Monthly

Time Master Client Monthly Subscription

$4.991 Month
How to cancel Time Master + Billing subscription ⁉️
2

In-App Purchases

$9.99

Invoicing Upgrade

Allows you to invoice your Time Entries and/or Expenses right from your iPhone or iPod Touch, including creating and emailing PDF invoices.

Charts

Top Paid

📈 125+18

Business

This app rose +18 positions in Business chart.

Last updated on July 19, 2026.

User reviews

Faultless for over 17 years

Update4: Jun 26. Still using every day. Never crashed. Never failed or lost data.

Update3: Jan 18. Still going strong. Still never crashed. Regularly updated. Have recommended it far and wide and all have been delighted. It does exactly what you want it to do with no fuss. Particularly pleased that it updated to ios11 so easily and I see it’s now iPhone X ready - but I have not tested that.

Update2: Jan 17. Still using this day in day out. Has never ever crashed on me. Ever. Cannot recommend highly enough.

Update1: I originally wrote the text below in April 2009 and because I have used the app to record my billing every working day since then (now Jan 2012) I just wanted to say that it really is a fantastic app. The developers also seem keen to continue working on it and I have never had any outage / problems in just under 3 years. As before, can't recommend highly enough. As before, I have never bothered to write a review about any other app!

PS I've now scrolled to the bottom of the reviews it strikes me just how many others have said they don't write reviews but have for this product, and that others have been impressed with the developer support (the transatlantic phone call does not surprise me, see below). I should also say to Peter that you should persevere. You don't need any in-app purchases (I have none) and it is really intuitive just add your 1st entry with your 1st client, your 1st task, and start and stop time. Really is easy.

---- i have a few iphone apps, this is the first time i felt moved to write a review. put simply, this is an excellent, easy to use, app that makes it super easy to record billing details 'on the go'. the interface is attractive and very easy to navigate. the reports (including by email) are generated without any hassle. what is more, the support i encountered was fantastic: i made one proposal to the team (allowing the export of start and stop time data) and it was implemented in the software within 3 days. can't recommend highly enough. el t.
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My 15-year standby

I’ve been using this for my whole career to track time. While not perfect, it does 95% of what I need and does those things well. I see app was just updated - developer continues to work on it (and hope he continues to do so!)

Thanks for the update and suggested email fix

Best app I have been using it for over a decade and it is simply awesome. However recently the email to client for invoicing and statements is failing. Thanks for the recent update to the app and ensuring it works with newer apple updates, that the app is kept up-to-date. I think the developer should consider moving subscription model to Fund updates. THANKS YOU FOR FIXING THE “APPLE” ISSUE, It wasn’t your App is was an apple conflict after all. Really appreciate you guiding a solution.
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iOS 18.7.2 Crash

Crashes immediately after opening in iPadOS 18.7.2 (22H124)

Running strong since 2012

My first time entry is dated 11 Jan 2012. It is my most used app to date. I use it every day running multiple timers at once. Thanks for keeping it updated to the latest OS versions.

Developer apps

User experience

🐞

Reported Bugs

3 issues

Crashes on iOS 18.7.2

Bug

Issues with email and client communication features

Bug

Problems with landscape mode and UI elements

Bug

Requested Features

5 requests

Desktop or web-based version

Feature

Improved expense tracking and management

Feature

Ability to split time entries across multiple clients/projects

Feature

Enhanced calendar and scheduling integration

Feature

Automatic mileage tracking and reporting

Feature

FAQ

What does Time Master + Billing do?

Time Master + Billing is a comprehensive application designed to help professionals track their billable time and expenses. It allows users to log time entries with start/stop times or durations, categorize them by client, project, and task, and apply flexible billing rates. The app also facilitates expense tracking for various items like mileage and meals, and generates exportable reports.

What are the key features of Time Master + Billing?

Key features include tracking time by start, stop, or duration with single or multiple running timers, organizing time entries by client, project, and task, and defining powerful billing rates at various levels (global, client, project, task, or custom). It also offers advanced time rounding, expense tracking, and the ability to display and export reports in HTML and CSV formats.

How is Time Master + Billing monetized?

The core time and expense tracking functionality is available for free. However, there are optional modules available as one-time in-app purchases, such as invoicing, QuickBooks export, and synchronization between devices. These modules offer enhanced features for users who require them.

What kind of reports can I generate with this app?

You can generate reports directly on your device that can be viewed and exported via email in HTML and/or CSV format. These reports can be filtered by client or timesheet, allowing you to easily review your billable hours and expenses for specific projects or clients.

Who would benefit most from using Time Master + Billing?

This app is particularly beneficial for consultants, attorneys, and contractors who need a robust and flexible system for tracking their time and expenses. Its comprehensive features cater to individuals working independently as well as professionals in larger firms who require detailed billing and reporting capabilities.