ZenShift vs Shift Calendar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZenShift
Easily manage complex work schedules, track hours, and estimate pay. Plan shifts, add personal events, and gain insights into your earnings with customizable reports. Sync across devices and export your calendar.
- Customizable shift templates
- Multiple shifts per day
- Overnight and 24-hour shift support
- Hours and earnings tracking
- Personal event integration
- Schedule export to PDF and device calendar
- Cross-device syncing
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ZenShift is a personal shift calendar for rotating work schedules, day and night shifts, and custom cycles. Set up a pattern once, see your workdays at a glance, and estimate your hours and earnings. PLAN YOUR SHIFTS • View your schedule by month, week, or year. • Add shifts from templates, paint dates with a tap, or remove them with the eraser. • Keep multiple shifts on the same day, including overnight and 24-hour shifts. • Create templates with times, breaks, hourly rates, colors, icons, and reminders. • Repeat two days on/two off, three on/three off, 24 hours on/three days off, or your own cycle. Choose start and end dates, pause a rotation, and recalculate it. • Keep manual shift edits when recalculating a rotation. Template updates apply to shifts that have not started by default; changing past linked shifts requires confirmation. Individual overrides are preserved. WORK AND PERSONAL PLANS TOGETHER • Add meetings, appointments, workouts, birthdays, and trips beside your shifts. • Use timed, all-day, and multi-day events with colors, locations, and notes. • Set daily, weekly, monthly, or yearly repeats and event reminders. • Get a warning when a timed event overlaps a shift. • Remove one occurrence or an entire recurring series. UNDERSTAND YOUR HOURS AND PAY • Track work hours after breaks, night hours, overtime, and extra income. • Set hourly rates for individual shifts and templates, with a default rate as a fallback. • Choose your monthly overtime threshold and night period. • See estimated earnings for completed shifts and the forecast for upcoming shifts. • View reports by week, month, year, or a selected period, with breakdowns by shift type, day, week, and month, plus averages. • Assign missing rates in groups from the report. Add shift notes and reuse extra-income templates. SHARE AND KEEP YOUR SCHEDULE • Customize a PDF with your calendar, summary, breakdowns, and shift details. • Send the file using your phone's sharing options. • Export shifts to a selected device calendar. • Use one account to sync your schedule between iPhone and iPad. • Get shift reminders and review notification history. MAKE IT COMFORTABLE Choose English or Russian, light or dark theme, text size, currency, week start, and 12/24-hour time. Adjust animations and haptic feedback. The basic calendar works locally without a required account. Earnings are estimates based on your entered rates, not payroll payments. Night-time breaks are estimated proportionally because their exact timing is not recorded. Cloud services need an account and internet access. Check the app for ad-removal options and terms. Set up your first template and make your work schedule easier to follow.
Shift Calendar
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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
Verdict
The clearest difference is in-app purchases: ZenShift at none against Shift Calendar's 3. ZenShift also leads on iOS requirement (16.0 vs 18.0). Shift Calendar's advantage is ads (none vs shown) and update cadence (weekly vs every 2 weeks). On price 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
Both are free to download. Shift Calendar sells 3 in-app purchases, starting at $4.99 per month. ZenShift asks for nothing beyond the download.
ZenShift ships an update every 2 weeks, Shift Calendar weekly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.
| Parameter | ZenShift | Shift Calendar |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 2 weeks | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 16.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 64 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmitry Nikitin | CAN BAYRAKTARBASI |
In-app purchases
ZenShift
No in-app purchases
Shift Calendar
- Backshift Pro Monthly$4.991 Month
- Backshift Pro Yearly7 Days trial$24.991 Year
- Backshift Pro Lifetime$79.99
Questions
Is ZenShift free?
Is Shift Calendar free?
Do ZenShift or Shift Calendar have ads?
Which is updated more often, ZenShift or Shift Calendar?
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