Amela
WorkLink Inc. — New Platform Launch Story
ℹ︎For confidentiality, company and project names and system images have been replaced with pseudonyms and mocks.

Field attendance, Built from scratch — a mobile app.

ClockMate is an attendance & payroll app for field staff that handles everything on a phone — from clocking in and out to checking shifts and managing overtime, pay, and payout accounts.

“Mobile clock-in, automatic overtime calculation, shift tracking, pay/account management” — the story of launching a new platform: a mobile app meeting all four axes field attendance needs, built in-house from scratch in 8 months.

Clock-in
SmartphoneComplete
No paper or timecards
Overtime
AutoCalculation
Weekday/Day off/Holiday
Pay
EstimateDisplay
Manage payout accounts too
Support
iOS / Android
Offline clock-in support
ClockMate6/4 (Thu)
Working
Clock-outTap to clock
Clock-in 09:02 〜
96
Work h
4.75
OT h
¥130K
Estimate
01
CLIENT
About the client

“WorkLink Inc.,” a leading domestic company supporting how the field works.

WorkLink Inc. is a business with staff working across multiple sites. Amid diverse work styles, it needed to manage attendance and pay accurately and efficiently.

Attendance management centered on paper and timecards was slow to total, and overtime calculation and account-info management were fragmented. We chose to build, in-house and from scratch, an app that handles all of this on a phone.

Clock-in
Smartphone
Support
iOS/Android
Manage
Attendance + Pay
Business flow — Login → Clock-in → Aggregation → Pay
1
STEP
Log in to the app
Fast with PIN auth
2
STEP
Clock in and out
Tap on-site
3
STEP
Auto-aggregate attendance
Calculate overtime by category
4
STEP
To pay & transfer
Check payslip & account
02
CHALLENGE
Design challenges to solve

Four structural requirements connecting attendance and pay.

None of these were questions of technology choice; they were business requirements tied directly to labor-management accuracy, aggregation efficiency, and staff usability. Building anew from scratch required a design that satisfies all of them at once.

Clock-in isn't done on-site
With paper and timecards, time and errors in tallying arise.
Overtime calc is complex
Without separating weekdays, days off, holidays and late nights, accurate wage calculation is impossible.
Worksites are hard to track
Without organizing shifts across sites, confusion and communication costs grow.
Pay & account info is scattered
Without centralizing information, submission and admin overhead remains.
03
ARCHITECTURE
An architecture built together

Turning attendance and pay into a “foundation that runs in your hand” across four areas.

Mobile clock-in, automatic overtime calculation, shift tracking, and pay/account management — the four areas field attendance needs, built in-house from scratch together with WorkLink Inc. You can clock in even offline, with automatic sync once the connection returns.

AmelaEXECUTION
8months
Duration
26person-months
Total effort
Area ①
Mobile clock-in
Challenge
The need to record clock-in/out on the spot, on-site.
Solution
Tap to clock · Offline-ready
Auto-sync when the connection recovers.
Area ②
Overtime calc
Challenge
The need to calculate overtime accurately by category.
Solution
Auto-calculate by weekday/day off/holiday/late night
Aggregate at the rates you set.
Area ③
Shift tracking
Challenge
The need to grasp shifts across multiple sites.
Solution
Visualize via work list & calendar
Notify schedules via alerts.
Area ④
Pay & account
Challenge
The need to centrally manage pay and account info.
Solution
Manage estimated pay and payout accounts in the app
Bank and branch selection supported too.
MOBILE
React Native Redux Toolkit TypeScript
BACKEND
Firebase MCloud Messaging AAuth / API
DELIVERY
iiOS / Android OOffline-ready
04
IMPACT
The value the platform creates

WorkLink Inc.’s “labor efficiency” accelerates.

This foundation is not a technical metric; it continuously delivers business outcomes such as labor efficiency, wage accuracy, and staff usability.

A foundation where attendance completes in your hand
From clock-in to aggregation, everything is done on a phone.
Wages can be calculated accurately
Overtime can be calculated automatically by category.
A design that centralizes information
Worksites, pay, and accounts can be brought into one.
Focus on core work
Reduce paperwork and lighten the load on the field.
👷
STAKEHOLDER
Field staff
Typically
Filling out and submitting paper takes effort.
At WorkLink,
Clock in with a tap, and check pay right away.
Less hassle
Focus on core work
🗂️
STAKEHOLDER
Labor & admin staff
Typically
Aggregation and overtime calculation take time.
At WorkLink,
With auto-aggregation, focus on review and approval.
Less aggregation effort
Fewer errors
🏢
STAKEHOLDER
Clients & sites
Typically
Sharing of work records tends to lag.
At WorkLink,
Work records are linked in real time.
Smoother coordination
Greater trust
📊
STAKEHOLDER
Management
Typically
Labor costs and utilization are hard to see.
At WorkLink,
Grasp utilization and cost from attendance data.
Optimized labor management
Data-driven management
05
DEMO
Three scenarios

Experience ClockMate with a live, working demo.