Comparison

Spark vs When i Do Shifts

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

Head to head
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!

About

When i Do Shifts

This app simplifies work schedule management for individuals and teams. It helps users stay organized, productive, and reduce stress by providing a modern approach to shift planning.

Highlights
  • Organize work schedules
  • Stay productive
  • Reduce stress
  • Modern shift management
  • Individual and team use
Features
Read full description

When i Do Shifts - Tracker is a simple and modern way to organize your work schedule. Whether you’re managing your own shifts, working rotating hours, or keeping track of a busy schedule, Withings - Shifts Tracker gives you a clear and convenient way to plan your work life. Keep your schedule organized, stay aware of upcoming shifts, and make it easier to manage your working days. Plan and track your shifts in one place and keep your work schedule easy to understand at a glance. Designed with a clean and straightforward experience, the app helps you stay organized without unnecessary complexity. When i Do Shifts - Tracker can help you: • Organize your work shifts and schedule • Keep track of upcoming working days • Manage rotating and changing work schedules • Quickly review your schedule • Stay organized throughout the week and month • Reduce the stress of keeping track of work hours and shifts • Keep your work schedule conveniently in one place An active subscription is required to access app features, including shift tracking. No app features are available without an active subscription. A 3-day free trial is available for eligible users. Your subscription automatically renews unless canceled at least 24 hours before the end of the current subscription period. You can manage or cancel your subscription through your App Store account settings. Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy https://www.igorstojanovic.com/privacy-policy

Screenshots

Spark4 screens
When i Do Shifts3 screens

Verdict

The call

The clearest difference is review sentiment: When i Do Shifts at 100% against Spark's 75%. When i Do Shifts also leads on monetization model (free vs free with in-app purchases) and update cadence (every 8 days vs every 5 weeks). Spark's advantage is ratings volume (7.5K vs 2) and iOS requirement (15.6 vs 17.6). On price, ads, 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. Spark sells 2 one-off in-app purchases and When i Do Shifts sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

When i Do Shifts holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Spark has 7.5K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 75% of Spark's written reviews are positive against 100% of When i Do Shifts's.

UpkeepUpdate frequency

Spark ships an update every 5 weeks, When i Do Shifts every 8 days. The most recent releases landed on October 22, 2026 and October 25, 2026 respectively.

Scorecard6 real differences · 4 level
Spark versus When i Do Shifts: the parameters behind the verdict, then further details
ParameterSparkWhen i Do Shifts
PriceFreeFree
Rating4.8 (7.5K ratings)5.0 (2 ratings) — better
Positive reviews74.8% of reviews100.0% of reviews — better
Number of ratings7.5K — better2
Update frequencyEvery 5 weeksEvery 8 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.6
Further details — not scored
Size10 MB23 MB
Age rating4+4+
DeveloperE.L.K. Equities LLCIgor Stojanovic

Customer experience

Spark

All ratings7,510 ratings
Positive95.2%
Neutral2.9%
Negative1.9%
Written reviews159 reviews
Positive74.8%
Neutral8.8%
Negative16.4%

When i Do Shifts

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

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

When i Do Shifts

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Spark

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

When i Do Shifts

Subscriptions2
  • Monthly3 Days trial$4.991 Month
  • Yearly3 Days trial$19.991 Year
One-time1
  • Premium Upgrade$14.99

Questions

Is Spark free?
Spark is free to download, with in-app purchases available.
Is When i Do Shifts free?
When i Do Shifts is free to download, with in-app purchases available.
Which has better reviews, Spark or When i Do Shifts?
When i Do Shifts is rated higher. Spark averages 4.8 out of 5 from 7.5K ratings, while When i Do Shifts averages 5.0 from 2 ratings.
Do Spark or When i Do Shifts have ads?
Neither Spark nor When i Do Shifts shows ads.
Which is updated more often, Spark or When i Do Shifts?
Spark ships an update every 5 weeks, and When i Do Shifts every 8 days. Most recently, Spark was updated on October 22, 2026 and When i Do Shifts on October 25, 2026.

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