Report updated Jun 10, 2026
Time Master + Billing
For iOS version targets independent professionals and attorneys needing billing tools; Android version targets casual mobile gamers interested in slot-based progression.
Time Master + Billing is an established business app that is free with in-app purchases. With a 4.7/5 rating from 42.5K reviews, it shows polarized user reception.
What is Time Master + Billing?
Time Master + Billing is a time-tracking and invoicing app for professionals on iOS and a casual slot-machine game on Android.
Users hire the iOS version to manage billable hours and expenses for legal and consulting work, while Android users engage with slot-based progression loops.
Current Momentum
v6.5 · 1mo ago
Active- Fixed crash for Filters in entries.
- Added crop function to Photo Receipts.
- Ships performance improvements for Android.
Active Nemesis
Toggl Track: Hours & Time Log
By Toggl OÜ
Other Rivals
7-Day Rank Pulse 🇺🇸
BusinessRating Pulse 🇺🇸
What makes this app unique?
What Does It Look Like?
What Are The Key Features?
Tracks time via start/stop timers or manual duration entry with multi-level billing rates (Global, Client, Project, Task).
Generates professional PDF invoices with custom logos directly from the device.
Exports time entries via IIF files for integration with desktop accounting software.
How much does it cost?
- iOS: Paid app at $9.99 with optional paid modules
- Android: Free-to-play with ad-supported gameplay and IAP
Hybrid model using a $9.99 upfront purchase for professional productivity on iOS and an ad-monetized casual game model on Android.
Who Built It?
On-Core Software
Developing a diverse range of utility tools and classic puzzle games for users seeking focused, single-purpose mobile experiences.
Portfolio
13
Apps
What other apps does On-Core Software make?
Explore the full On-Core Software report
Portfolio breakdown, audience, momentum, and every app published by On-Core Software.
What do users think recently?
Analysis in progress, available soon
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
What is the competitive landscape for Time Master + Billing?
Where is it available?
Localized markets (4)
How's The Business Market?
How does it evolve in the Business market?
Time Master + Billing holds a #51 Paid rank in the Business category (CA) on iOS, while the Android version maintains a high-volume casual gaming presence. The disparity between the $9.99 upfront cost on iOS and the free-to-play model on Android signals a lack of unified cross-platform strategy.
Rank progression
27 active rankings tracked — 30-day window
Which niche is Time Master + Billing in?
to track billable time and manage expenses
Explore the full Task Management Trackers niche
Every app in this space — 42 tracked, the niche's live rankings, and Marlvel's editorial take on the job-to-be-done.
The rivals identified
Nemeses(1)
With over 9,000 reviews and a consistent update cadence, Toggl represents the dominant cross-platform standard for professional time tracking.
Differentiators
- Offers a robust free tier that captures individual freelancers before they scale to paid enterprise plans.
- Maintains a deep ecosystem of browser extensions and desktop widgets that keep the timer constantly visible.
- Provides comprehensive reporting dashboards that visualize billable vs. non-billable time across complex team structures.
Head to head
To compete, the target app must pivot from a standalone utility to an integrated workflow partner by expanding its API and desktop presence.
Contenders(2)
A long-standing incumbent that directly targets the same professional services audience as the target app.
Differentiators
- Deeply entrenched in the agency and creative services market with specialized invoicing and payment gateway integrations.
- Focuses on the end-to-end lifecycle of a project, from time tracking to client payment collection.
A high-velocity competitor that aggressively targets the productivity space with frequent feature updates.
Differentiators
- Aggressive feature shipping cadence with four updates in the last six months indicates rapid product evolution.
- Positions itself as a productivity tool rather than just a billing app, broadening its appeal to non-billable teams.
Same space(2)
An adjacent productivity tool that serves as a secondary alternative for users seeking simple time logging.
Differentiators
- Offers a lightweight, no-frills interface that appeals to users who find enterprise-grade trackers too complex.
- Focuses on basic time-tracking functionality without the heavy administrative overhead of invoicing or project management.
Targets the productivity category with a focus on team management and activity monitoring features.
Differentiators
- Includes employee monitoring features like activity levels and screenshots, which differentiates it from simple time-keeping apps.
- Built for remote team management rather than individual consultant billing, shifting the focus to workforce oversight.
New entrants(1)
Demonstrates high development velocity with eight releases in the last six months, signaling an active pivot.
Differentiators
- Rapid release cycle allows for quick iteration based on user feedback, potentially outpacing slower legacy incumbents.
- Focuses on modernizing the mobile-first experience to capture users dissatisfied with clunky, legacy-style time tracking interfaces.
Compare Time Master + Billing against every rival
All rivals in one side-by-side table — identity, store metrics, ratings & sentiment, and strategic intel — plus a head-to-head page for each.
The outtake for Time Master + Billing
Strengths to defend, gaps to attack
Core Strengths
- Multi-level billing hierarchy provides granular revenue tracking for attorneys.
Critical Frictions
- $9.99 upfront price point on iOS creates a high barrier to entry.
Growth Levers
- Developing a native desktop companion app would unlock B2B integration.
Market Threats
- Toggl's browser-extension ecosystem captures users at the point of work.
What are the next best moves?
Ship native cloud-sync because the lack of multi-device data parity is a primary competitive disadvantage → increase retention.
Competitors like Toggl offer seamless cross-platform sync, which is the standard for professional time-tracking workflows.
Trade-off: Pause the Android slot-machine feature expansion — professional retention has higher LTV impact than casual ad-revenue.
A counter-intuitive read
The Android slot-machine gameplay is not a distraction but a high-margin ad-revenue hedge that subsidizes the lower-velocity professional tool development on iOS.
Feature Gaps vs Competitors
- Browser extensions (available in Toggl Track but absent here)
- Native desktop app (available in Toggl Track but absent here)
- Real-time team collaboration (available in Clockify but absent here)
Key Takeaways
Time Master + Billing holds its category lead through specialized billing features but bleeds professional users to cross-platform competitors, so revenue growth hinges on unifying the experience across desktop and mobile.
Where Is It Heading?
Mixed Signals
The professional time-tracking market is consolidating around integrated workflow partners, leaving standalone utilities like Time Master exposed. Unless the app pivots to a unified cross-platform experience, it will continue to lose high-value consulting users to competitors that offer better desktop and browser-based integration.
The lack of native cloud-sync forces manual data management, which increases churn risk as professional users migrate to integrated SaaS alternatives.
The latest update added photo receipt cropping, showing active maintenance of the core billing utility for professional service providers.