Spark vs Shift Calendar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Full shift customization
- Secure cloud sync
- Streamlined shift trades
- Instant visual cues
- Comprehensive shift coverage
- User-friendly interface
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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!
Shift Calendar
This calendar app is designed for shift workers, offering automatic calculation of time off for work cycles. It also includes additional tools specifically for managing shift-related schedules.
- Shift worker focus
- Automatic time off calculation
- Work cycle scheduling
- Shift-related tools
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Shift Calendar is a calendar app that focuses on shift workers, and it can automatically calculate the time off for a work cycle. And some other shift-related tools are provided.
Screenshots
Verdict
The clearest difference is ratings volume: Spark at 7.5K against Shift Calendar's 1. Shift Calendar's advantage is rating (5.0 vs 4.8) and iOS requirement (12.0 vs 15.6). On price, update cadence, ads 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
Both are free to download. Spark sells 2 one-off in-app purchases and Shift Calendar sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Shift Calendar 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 1, so its average is the more settled of the two.
Spark ships an update every 5 weeks, Shift Calendar monthly. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.
| Parameter | Spark | Shift Calendar |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (7.5K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 74.8% of reviews | — |
| Number of ratings | 7.5K — better | 1 |
| Update frequency | Every 5 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | E.L.K. Equities LLC | 晨 房 |
Customer experience
Spark
Shift Calendar
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
Shift Calendar
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Spark
- Annual Subscription Renewal$0.99
- Initial Annual Subscription$5.99
Shift Calendar
- Shift Calendar Premium$9.99
Questions
Is Spark free?
Is Shift Calendar free?
Which has better reviews, Spark or Shift Calendar?
Do Spark or Shift Calendar have ads?
Which is updated more often, Spark or Shift Calendar?
Other comparisons
