Comparison

Shift Work Calendar Planner vs Spark

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

Head to head
About

Shift Work Calendar Planner

Easily manage your work schedule with this calendar app designed for shift workers. Register your shifts, add notes with emojis, and save your calendar as an image. Sync with your iOS calendar and view others' shifts with the premium plan.

Highlights
  • Create multiple shift types
  • Easy shift input
  • Add notes with emoji icons
  • Save calendar as image
  • Send shifts via email
  • Widget for quick schedule check
  • iOS Calendar Sync (Premium)
  • Input/view other people's shifts (Premium)
Features
Read full description

There are many people working at the retail trade and the hospital, etc. by the shift work. Isn't it convenient to be able to confirm the schedule of your work with iPhone easily quickly? This is a useful calendar for such people. It is possible to confirm it by the calendar by easily registering your shift. Moreover, You can save this calendar as an image, and set it as a wallpaper of the idle screen of iPhone. Features - Create amount of shift types - Easy shifts input - Notes for any date on calendar with Emoji Icon. - Save a calendar as an image. - Send your shifts to others via E-mail. - Widget:Quickly check schedule and shifts with widget Premium Plan features ・No ads ・iOS Calendar Sync Your shifts are imported to iOS calendar. ・Shift Table You can input and view other person's shift too. Auto-renewable subscriptions You can choose the period of use from 1 month, 6 months, 1 year. The longer the period, the better the price! It will be automatically continued when the use period expires. To terminate automatic subscription, please carry out cancellation processing from the setting application. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase Terms of use http://ebisu-soft.com/shift-work-calendar/premium_plan_ios_terms_of_use

About

Spark

This app simplifies shift work for professionals like first responders and healthcare workers. It offers full customization, secure cloud syncing, and streamlined shift trading. Plan your life and stay organized with instant visual cues and reliable support.

Highlights
  • Full shift customization
  • Secure cloud sync
  • Streamlined shift trades
  • Instant visual cues
  • Comprehensive shift coverage
  • User-friendly interface
Features
Read full description

Spark: Your Ultimate Shift Calendar App For over 15 years, Spark has been the go-to app for simplifying shift work. Loaded with powerful, user-friendly features, Spark helps you balance work and personal life in one place—trusted daily by fire, police, EMS, healthcare professionals, and shift workers worldwide. With Spark’s unique "Cloud Connect" system, you can sync and share your schedule across all devices, keeping you and your loved ones in the loop anytime, anywhere. Why Spark? Here’s why your colleagues love it: Full Customization Spark is designed for you. Track and log anything you need—vacation, sick time, comp time, overtime, trades, and more. Can’t find something? Add it with ease! Spark’s sleek, intuitive design lets you personalize everything to suit your work style. Secure & Reliable Your data is safe with us. Spark’s "Cloud Connect" syncs your encrypted calendar across devices, linked to your email. Lose or upgrade your phone? Just log back in, and it’s like you never left. Comprehensive Shift Coverage From pre-loaded schedules to custom department setups, Spark supports thousands of shift calendars. Don’t see yours? Easily create it, and it’s saved for you and your team. Streamlined Shift Trades & Swaps Manage and track all your trades and swaps down to the individual. Spark’s “Trade Board” lets you request and confirm trades within the app, automatically updating your calendar and stats—no extra steps. Instant Visual Cues Color-code shifts, events, and stats for at-a-glance planning. With Spark, you’ll know exactly what’s on the agenda without extra clicks. Unmatched Customer Support Our app thrives on user feedback. We’re committed to fast, helpful support, with most emails resolved in under two hours. Spark evolves with your input, making it the app you can rely on for years to come. Try Spark free for 30 days, and experience the app that’s helping shift workers around the world stay organized. Visit www.LeakyNozzle.com to learn more!

Screenshots

Shift Work Calendar Planner4 screens
Spark4 screens

Verdict

The call

The clearest difference is ads: Spark at none against Shift Work Calendar Planner's shown. Spark also leads on device support (3 vs 1). Shift Work Calendar Planner's advantage is review sentiment (95% vs 75%) and update cadence (fortnightly vs every 5 weeks). On price, rating, ratings volume and in-app purchases 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. Shift Work Calendar Planner sells 6 in-app purchases, starting at $1.59 per month and Spark sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Shift Work Calendar Planner against 4.8 for Spark. Both are backed by a comparable volume of ratings — 9.5K and 7.5K respectively. Written reviews are what separate them: 95% of Shift Work Calendar Planner's written reviews are positive against 75% of Spark's.

UpkeepUpdate frequency

Shift Work Calendar Planner ships an update fortnightly, Spark every 5 weeks. Both last shipped on September 24, 2026.

Scorecard4 real differences · 6 level
Shift Work Calendar Planner versus Spark: the parameters behind the verdict, then further details
ParameterShift Work Calendar PlannerSpark
PriceFreeFree
Rating4.7 (9.5K ratings)4.8 (7.5K ratings) — better
Positive reviews95.5% of reviews — better74.5% of reviews
Number of ratings9.5K — better7.5K
Update frequencyFortnightly — betterEvery 5 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.015.6 — better
Further details — not scored
Size48 MB14 MB
Age rating4+4+
DeveloperEbisu Soft Inc.E.L.K. Equities LLC

Customer experience

Shift Work Calendar Planner

All ratings9,521 ratings
Positive94.3%
Neutral3.1%
Negative2.6%
Written reviews1,768 reviews
Positive95.5%
Neutral1.8%
Negative2.8%

Spark

All ratings7,300 ratings
Positive95.3%
Neutral2.9%
Negative1.8%
Written reviews157 reviews
Positive74.5%
Neutral8.9%
Negative16.6%

User reviews

Shift Work Calendar Planner

From 9.5K App Store ratings

What we love

  • 🚀 Easy to use
  • 👍 Customizable
  • 💡 Helpful for shift workers
  • 🚀 Convenient
  • 👍 Organized

Room to improve

  • 🐛 Occasional glitches
  • 💸 Expensive subscription
  • 📢 Too many ads

Spark

From 7.5K App Store ratings

What we love

  • 🚀 Excellent calendar app
  • 👍 Easy to use and set up
  • 🔒 Secure and reliable
  • 💡 Customizable and feature-rich
  • 👍 Great for shift work and emergency services

Room to improve

  • 🐛 Occasional crashes and bugs
  • 💰 Subscription model and pricing issues
  • 🔧 Needs more frequent updates
  • 🔧 Compatibility issues with newer devices
  • 🔧 Lack of certain features (e.g., widgets, dark mode)

Bugs and requests

Shift Work Calendar Planner

Reported bugs

3 issues
  • Calendar dates not syncing correctly
  • App freezing or crashing
  • Issues with data migration

Requested features

5 requests
  • Recurring shift scheduling
  • Ability to add multiple shifts per day
  • More customization options
  • Sync with other calendars
  • Payroll integration

Spark

Reported bugs

3 issues
  • Login and authentication problems
  • Data loss and sync issues after updates
  • Unreliable performance on some devices

Requested features

4 requests
  • Ability to sync with more calendar services
  • More customization options
  • Improved user interface and design
  • Ability to view past schedules and events

In-app purchases

6 purchases

Shift Work Calendar Planner

Subscriptions6
  • No advertisement plan 1 month$1.591 Month
  • Premium Plan 1Month$2.391 Month
  • No advertisement plan 6 months$6.396 Months
Show 3 more
  • Premium Plan 6 Months$9.596 Months
  • No advertisement plan 1 year$11.001 Year
  • Premium Plan 1 Year$16.901 Year
2 purchases

Spark

One-time2
  • Annual Subscription Renewal$0.99
  • Initial Annual Subscription$5.99

Questions

Is Shift Work Calendar Planner free?
Shift Work Calendar Planner is free to download, with in-app purchases available.
Is Spark free?
Spark is free to download, with in-app purchases available.
Which has better reviews, Shift Work Calendar Planner or Spark?
Spark is rated higher. Shift Work Calendar Planner averages 4.7 out of 5 from 9.5K ratings, while Spark averages 4.8 from 7.5K ratings.
Do Shift Work Calendar Planner or Spark have ads?
Shift Work Calendar Planner shows ads; Spark does not.
Which is updated more often, Shift Work Calendar Planner or Spark?
Shift Work Calendar Planner ships an update fortnightly, and Spark every 5 weeks. Most recently, Shift Work Calendar Planner was updated on September 24, 2026 and Spark on September 24, 2026.

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