Comparison

Scheduler vs Spark

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

Head to head
About

Scheduler

Easily visualize and manage your rotating work shifts for up to six years in advance. Ideal for public service employees, it handles common and custom schedules, vacation time, and even overlays a partner's schedule for better family planning.

Highlights
  • Visualize schedule for six years
  • Supports custom and common shift patterns
  • Tracks vacation and sick time
  • Records and formats shift trades
  • Overlays partner's schedule
  • Logs events with date, time, and location
  • Countdown to retirement
Features
Read full description

Visualize Your Shift Schedule From Jeff: Please don't put questions or suggestions in a review -- there's no way for me to reply directly to you. Instead. use the in-app email buttons (on the Help tab), or send to sched@buddy.com. If your schedule varies from week to week, keeping track of your working days can be a chore, and it’s often difficult to quickly figure out when you’ll be on-duty weeks or months in the future. Scheduler to the rescue! Designed for public-service employees such as police officers, firefighters and health-care workers — anyone who works an unusual but predictable schedule — Scheduler always shows your schedule for the next six years from “today.” Common shift schedules are built-in, such as the “Berkeley” (a.k.a. “California”), “48-96” and “Dupont,” but you can easily change them or create other repeating schedules covering any number of days. See the screenshots (here and on the web site) for some examples. And there’s even a “Doofus” mode for showing irregular schedules (e.g., health-care workers). If your spouse/partner works a shift schedule, too, you can have that entirely different rotation appear on the calendar with yours. This will help you organize family activities such as vacations and day-care. Features: • Displays your schedule for the next six years, including vacations and holidays. • Perfect for public-service workers such as police officers and firefighters. • Records trades (swaps). Tracks hours earned or owed on a person-by-person basis. • Formats emails for sending out trade offers and approval requests. • Maintains a record of your OT hours. • Tracks your vacation time: automatically computes hours earned and shows weekly balances. Also records and totals sick time. • Logs “events” with date, time and location — you can edit the title, text, and location details when you have time. • Overlays an entirely separate schedule for your spouse/partner to help you coordinate your lives. • Adjustable colors for shifts, vacations, Kelly days, holidays, etc. • Mark special days such as Kellys, paydays, “early” shifts, or training days. • Countdown to retirement. • Extensive Help pages for every feature and screen; indexed. • Includes UK Rota features for London train and bus drivers. Notes: 1. You *can* enter a custom schedule. 2. You *can* set the text that appears on each day. 3. You *can* enter very long rotations. 4. You *can* superimpose text to mark special days on the calendar. 5. You *can* set bi-weekly repeating events (e.g., for paydays) 6. Scheduler is complicated. Please don't give up and leave a bad review -- I can't help you that way. If you have questions or comments, the best way to contact me is by using the in-app email button on the Help screen (2nd best: sched@buddy.com). I reply to all emails immediately (or within a few hours if I'm sleeping or traveling, which isn't often). If you didn't hear from me promptly, it means there was failure in the "Tubes." Please try again to contact me. Attention FDNY (firemen): you'll find my other app, FDNY, more useful for FD New York.

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

Scheduler4 screens
Spark4 screens

Verdict

The call

The clearest difference is price: Spark at Free against Scheduler's $7.99. Spark also leads on rating (4.8 vs 3.9) and ratings volume (7.5K vs 75). Scheduler's advantage is in-app purchases (none vs 2) and update cadence (every 9 days vs every 5 weeks). On review sentiment, ads, device support and iOS requirement 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

Spark is free to download; Scheduler costs $7.99 up front. Spark sells 2 one-off in-app purchases. Scheduler asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Spark holds the better App Store score, 4.8 against 3.9. That said, the two scores are not equally well evidenced: Spark has 7.5K ratings behind it against 75, so its average is the more settled of the two. Written reviews complicate that: 79% of Scheduler's written reviews are positive against 75% of Spark's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Scheduler ships an update every 9 days, Spark every 5 weeks. The most recent releases landed on October 21, 2026 and October 20, 2026 respectively.

Scorecard6 real differences · 4 level
Scheduler versus Spark: the parameters behind the verdict, then further details
ParameterSchedulerSpark
Price$7.99Free — better
Rating3.9 (75 ratings)4.8 (7.5K ratings) — better
Positive reviews78.9% of reviews — better74.8% of reviews
Number of ratings757.5K — better
Update frequencyEvery 9 days — betterEvery 5 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.0 — better15.6
Further details — not scored
Size10 MB10 MB
Age rating4+4+
DeveloperThe Buddy System, LLCE.L.K. Equities LLC

Customer experience

Scheduler

All ratings74 ratings
Positive67.6%
Neutral6.8%
Negative25.7%
Written reviews171 reviews
Positive78.9%
Neutral6.4%
Negative14.6%

Spark

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

User reviews

Scheduler

From 75 App Store ratings

What we love

  • 🚀 Outstanding app for shift workers
  • 👍 Highly customizable and flexible
  • 📆 Excellent for planning schedules years in advance
  • 💰 Worth every penny
  • 🤝 Great customer support

Room to improve

  • 🕰️ Steep learning curve
  • 🔀 Issues with repeating events and schedules
  • 🔄 Problems with updates causing data loss
  • 💤 Outdated UI and appearance

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

Scheduler

Reported bugs

2 issues
  • Events and schedules disappearing after updates
  • Vacation and overtime tracking not working correctly

Requested features

4 requests
  • Drag and drop support for shift swapping
  • List view option for events
  • Ability to use emojis in event titles
  • Removal of unnecessary time zone settings

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

None

Scheduler

No in-app purchases

2 purchases

Spark

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

Questions

Is Scheduler free?
Scheduler costs $7.99, with no in-app purchases.
Is Spark free?
Spark is free to download, with in-app purchases available.
Which has better reviews, Scheduler or Spark?
Spark is rated higher. Scheduler averages 3.9 out of 5 from 75 ratings, while Spark averages 4.8 from 7.5K ratings.
Do Scheduler or Spark have ads?
Neither Scheduler nor Spark shows ads.
Which is updated more often, Scheduler or Spark?
Scheduler ships an update every 9 days, and Spark every 5 weeks. Most recently, Scheduler was updated on October 21, 2026 and Spark on October 20, 2026.

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