WhichWeek vs Workkio
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
WhichWeek
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WhichWeek is the fastest way to know your ISO week number. Open the app and your current ISO week number is front and center β bold, clear, and impossible to miss. No digging through a calendar. No mental arithmetic. Just the week number. WEEK VIEW β’ Your current ISO week number, large and legible β’ The exact date range for that week (Monday to Sunday) β’ Step forward or back through weeks and years with the stepper controls β’ Tap Today to jump straight back to the current week β’ Leap year indicator so you never lose track of the extra day DAYS VIEW β’ Pick any two dates and instantly see the number of days between them β’ Broken down into full weeks and remaining days β’ Perfect for project planning, countdowns, and date arithmetic DESIGNED WITH CARE β’ Pure SwiftUI β fast, native, and responsive β’ Supports Dynamic Type for accessibility β’ Full Dark Mode and Light Mode support β’ Works in portrait and landscape β’ Available on iPhone, iPad, Mac, and Apple Watch ISO WEEK NUMBERS ISO 8601 defines week numbering used widely in business, finance, logistics, and project management across Europe and beyond. Week 1 is the week containing the first Thursday of the year. WhichWeek follows this standard precisely. NO ADS. NO TRACKING. NO SUBSCRIPTIONS. WhichWeek is a one-time purchase. No accounts required, no data collected, no network requests made.
Workkio
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Workkio is a simple time-tracking app focused on time control, overtime and everyday work clarity. **What you can do** - Clock in and clock out in one tap - Start and end breaks without losing context - See your day, your week and overtime balance at a glance - Edit entries when reality does not match perfection - Stay in sync across your phone and the web - Export your data when you need a spreadsheet or a backup **Built for real workflows** Whether you freelance, work shifts, or juggle multiple clients, Workkio helps you capture time honestly and adjust it easily. **Privacy-minded** Sign in to keep your data tied to your account and synced safely. Your time entries are yours. Download Workkio and stop guessing your overtime and weekly totals.
Screenshots
Verdict
The clearest difference is iOS requirement: Workkio at 15.1 against WhichWeek's 26.4. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | WhichWeek | Workkio |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod β better |
| Requires iOS | 26.4 | 15.1 β better |
| Further details β not scored | ||
| Size | 3 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Arthur Kahwa | Oriol Riba Salvany |
In-app purchases
WhichWeek
No in-app purchases
Workkio
No in-app purchases





