Comparison

コータイム vs Shift Calendar

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

コータイム

Features
Read full description

Koutime is a shift calendar and leave management app designed for rotating shift workers. Key features: • Create shift types and cycles of any practical length • Customize 1–12 teams, shift names, working hours and colors • Automatically repeat a cycle from a selected base date • Use manual day-by-day shift entry when needed • Check preceding, following and overlapping teams • Compare all configured teams side by side in a fixed-cycle schedule • Manage annual leave, designated leave, compensatory leave and saved leave • See the recommended monthly leave usage before the fiscal year ends • Add notes, custom marks and shift exceptions to each date • Optional Rokuyo calendar display • Hourly Apple Weather forecast when location access is granted • Work-linked AlarmKit alarms on iOS 26 or later • Large, easy-to-read text option • Japanese and English UI, selectable during setup or in Settings • 20 app color themes with a live calendar preview Share a fixed work cycle with colleagues: • Share only shift definitions, the reference date, cycle and team settings • Review an invitation and choose your own team before importing • Personal plans and leave balances are not shared; your existing personal data is preserved • Invitation links are valid for 30 days and can be disabled from the creating device Koutime Premium is a one-time purchase that removes banner ads and unlocks additional alarm sounds and themes, Home and Lock Screen widgets, and file backup and restore. Normal schedules and leave are stored on your device. No account or sign-in is required. Only when you create a short invitation link are the reviewed basic work settings saved to a sharing server. Anyone with an active link can view them, so do not include confidential shift or team names.

About

Shift Calendar

Features
Read full description

Your shift pattern, set up once. Your whole month, clear at a glance. Backshift is a shift calendar for people whose week doesn't start on Monday: nurses, doctors, police officers, firefighters, factory and warehouse crews, security officers, care workers and anyone on a rotating schedule. BUILD YOUR ROTATION ONCE Two days, two nights, four off? Build it step by step and your calendar fills itself: this month, next month, every month. Start from a ready pattern (2 days · 2 nights · 4 off, 24 on · 48 off, three shifts 3×8, 5 on · 2 off) or build your own with any shift types, hours and unpaid breaks, like a 14 on · 7 off oilfield hitch. Swapped a shift, took PTO or called in sick? Change that one day without touching the rest, and add a note if you like. YOUR MONTH IN COLOR Every shift type gets its own color band across the month. Spot three nights in a row or four days off before anyone asks "are you free on the 14th?" Prefer a list, light mode or larger text? It's all there. HOURS AND ESTIMATED PAY Enter your hourly rate and Backshift shows the month's hours, overtime and estimated earnings on one clean page. Night, overtime, Sunday and holiday premiums follow the percentages you set. When a shift ends you get one question; skip it and the shift counts as planned. It's a personal estimate of your paycheck, not a pay stub or payroll. CHECK YOUR PAY STUB Paid monthly? Choose the month and enter the gross amounts from your pay stub. Backshift compares them with the shifts you worked and shows, line by line, where base pay, a premium or the gross total doesn't match, with the math behind each line. Only gross amounts are compared; net pay, taxes and deductions aren't included. Part of Backshift Pro. WITHOUT OPENING THE APP During a shift, open the app once and the time left counts live on your Lock Screen and in the Dynamic Island, with your estimated pay too on Pro. Widgets show your month and your next shift. On Apple Watch, check your week and see your next shift right on your watch face. Get a reminder before every shift, at the time you choose. SHIFTS FOR TWO Share your calendar with one person and see both rotations side by side. The days you're both off are highlighted. Your pay and notes are never shared. NIGHT SHIFT GUIDE Short articles on daytime sleep, caffeine timing and winding down, each with its real sources listed. General wellness information, not medical advice. EXPORT A monthly PDF report, plus a calendar file (.ics) for any calendar app. MADE FOR 3 AM Dark mode first, high-contrast colors, numbers that line up. Your data stays on your device and syncs with your own iCloud. Back up and restore anytime. Available in 36 languages. FREE AND PRO The calendar, the rotation builder, the live timer, widgets and Apple Watch are free, forever. Backshift Pro adds your weekly and monthly pay with past months and comparisons, the pay stub check, export, unlimited shift types, calendar sharing and the night shift guide. The yearly plan starts with a 1-week free trial. If Pro ends, your calendar and records stay. Choose monthly, yearly or a one-time lifetime purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period; manage them in your Apple Account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

コータイム4 screens
Shift Calendar4 screens

Verdict

The call

The clearest difference is ads: Shift Calendar at none against コータイム's shown. コータイム's advantage is iOS requirement (15.1 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. コータイム sells 1 one-off in-app purchase and Shift Calendar sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

コータイム ships an update every 11 days, Shift Calendar weekly. Both last shipped on October 29, 2026.

Scorecard2 real differences · 4 level
コータイム versus Shift Calendar: the parameters behind the verdict, then further details
ParameterコータイムShift Calendar
PriceFreeFree
Update frequencyEvery 11 daysWeekly — better
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS15.1 — better18.0
Further details — not scored
Size42 MB52 MB
Age rating4+4+
DeveloperTOMA HONDACAN BAYRAKTARBASI

In-app purchases

1 purchases

コータイム

One-time1
  • 広告を削除$0.99
3 purchases

Shift Calendar

Subscriptions2
  • Backshift Pro Monthly$4.991 Month
  • Backshift Pro Yearly7 Days trial$24.991 Year
One-time1
  • Backshift Pro Lifetime$79.99

Questions

Is コータイム free?
コータイム is free to download, with in-app purchases available.
Is Shift Calendar free?
Shift Calendar is free to download, with in-app purchases available.
Do コータイム or Shift Calendar have ads?
コータイム shows ads; Shift Calendar does not.
Which is updated more often, コータイム or Shift Calendar?
コータイム ships an update every 11 days, and Shift Calendar weekly. Most recently, コータイム was updated on October 29, 2026 and Shift Calendar on October 29, 2026.

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