# Spark - Shift Calendar — user reviews > 157 indexed App Store user reviews of Spark by E.L.K. Equities LLC, rated 4.77/5 from 7,483 ratings. - Source: https://appshunter.io/ios/app/spark-shift-calendar/id390915382/reviews - App overview in markdown: https://appshunter.io/ios/app/spark-shift-calendar/id390915382.md - Rating breakdown: 5★ 6,197 · 4★ 759 · 3★ 214 · 2★ 38 · 1★ 92 ## What do users think of Spark? Overall sentiment: positive **Pros** - 🚀 Excellent calendar app - 👍 Easy to use and set up - 🔒 Secure and reliable - 💡 Customizable and feature-rich - 👍 Great for shift work and emergency services - 🚀 Syncs well across devices - 👍 Helpful customer service **Cons** - 🐛 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) **Commonly reported bugs** - Login and authentication problems - Data loss and sync issues after updates - Unreliable performance on some devices **Most requested features** - Ability to sync with more calendar services - More customization options - Improved user interface and design - Ability to view past schedules and events ## Newest reviews (20 of 157) ### 5/5 — Great Fire Fighter Calendar *2026-05-26, version 4.3.1* Like has it has all the different shifts and how it lets you really customize it yourself ### 5/5 — Great *2026-05-22, version 4.3.1* Great app ### 5/5 — Instructions *2026-05-19, version 4.3.1* Nice please make this stop popping up on my phone ### 5/5 — Great calendar *2026-05-15, version 4.3.1* Great calendar! My husband’s a fireman and it helps me keep up with his shifts along with all my things ### 5/5 — Best App *2026-05-14, version 4.3.1* Incomparable ### 5/5 — J *2026-05-13, version 4.3.1* Good app ### 5/5 — App *2026-04-30, version 4.3.1* Great app for work very user friendly ### 5/5 — The best! *2026-04-25, version 4.3.1* The best calendar app I’ve used for fire service ### 5/5 — iPhone 17 pro max *2026-04-20, version 4.3.1* Love the app been using it for years ### 5/5 — iPhone pro max *2026-04-11, version 4.3.1* Love the app been using it for years ### 5/5 — Great *2026-04-06, version 4.3.1* Great, now quit asking for a review! ### 3/5 — Instructions *2026-04-02, version 4.3.1* Nice ### 5/5 — Easy scheduler *2026-03-09, version 4.3.1* Best one on the market ### 5/5 — Have had the app for years!! *2025-10-28, version 4.3.1* Love this app. Fills all my needs and is THE calendar app for me!! I’m not too complicated and neither is the app. ### 5/5 — Firefighters life *2025-10-27, version 4.3.1* Great app ### 5/5 — Best Calander for FF *2025-10-16, version 4.3.0* Love this calendar. Has always come in handy. ### 5/5 — Best calendar app there is for firefighters *2025-10-16, version 4.3.0* Best calendar app there is for firefighters easily able to lineup calendar with work schedule ### 3/5 — The new update *2025-10-12, version 4.2.5* The app is ok but should not have to pay an annual fee just to use a calendar. Stop begging for money!! ### 3/5 — Not working *2025-09-22, version 4.2.5* App is normally great. Not working today for some reason. Won’t open. ### 4/5 — K *2025-08-12, version 4.2.5* Okay ## Most critical reviews (10 lowest-rated) ### 1/5 — Don’t bother until redesign is out *2025-06-11, version 4.2.5* I’ve used this app for the best part of 10 years and it was head and shoulders above any other Emergency Services shift app. Unfortunately it’s fallen behind with many annoying issues especially functionality and billing issues. The new owner is working hard to rectify the faults and redesign the app but until this is released I wouldn’t bother ### 1/5 — Android Version Better *2025-02-15, version 4.2.5* I’ve used the Android version for over 7 years and prefer that one much better. I recently made the switch to IPhone and don’t like how I can’t make a Spark Calendar Widget. ### 1/5 — Lost access on android *2024-09-02, version 4.2.1* Apparently spark is no longer Available for android Not happy considering I paid for a year ### 1/5 — lifetime membership *2023-03-19, version 4.2.1* i bought this a lander app when it first came out and it had a one time lifetime fee which at the time was around 8 dollars for the app. i felt it was a good deal as i liked how i could use the 12 hour work day and use it as my work days were work monday tuesday off wednesday thursday. then work friday saturday and sunday. then off monday and tuesday work wednesday thursday and off friday saturday and sunday. so when i first got the calendar app i was having trouble making the days and calendar work. so i reached out to the staff and was helped and shown how to use the app. then in 2017 i was told i needed to start paying for a membership fee. i explained to David that i had paid for a lifetime membership and he extended me for 5 years. so i just went to update my calendar with a doctor appointment and when i tried it said my membership expired. so how can a lifetime membership expire ? so i wrote customer service and was told by David that no more extensions would be given and that i have to pay for the yearly service now talk about customer service going down the drain. went for great to piss poor. so be aware if you buy the lifetime membership as it’s not a lifetime. it’s more like what ever they decide ### 1/5 — Find another app *2022-12-21, version 4.2.1* I used this app for years and it worked great. My Dept is now going to a new shift schedule and I needed to change the shift calendar. I emailed the developer and got no response. It looks like most of the comments and updates are YEARS old. I would recommend choosing a different app. ### 1/5 — Not working *2022-08-26, version 4.2.1* It’s only completing a part of the schedule rotation. I’ve checked settings and attempted several times. Can only get one shift of 3 (all same pattern) to show correctly. ### 1/5 — Needs an IPhone widget *2021-09-29, version 4.2.1* I first used this app with my android and loved it. Now that I have switched to an iPhone, I hate the fact I cannot place my calendar on my Home Screen ### 1/5 — 10 days free? No *2021-08-24, version 4.2.1* I wanted to have a free trial, but when I tried the app and didn’t like it, I could not clearly see how to cancel. This is not a free trial unless there is clarity how to cancel. Buried way down in Apple settings 10 clicks away I could the purchase. Bad deal. ### 1/5 — كيف اغير التاريخ *2021-04-18, version 4.2.1* حمد ### 1/5 — Doesn’t stand behind pricing *2020-06-20, version 4.2.1* When I purchased this app it was a one time fee of a higher amount than I wouldn’t normally pay for the app. Then suddenly they decided to not stand behind that purchase and now require me rebuy it annually for something i already purchased. ## Most praised reviews (10 highest-rated) ### 5/5 — App issue *2026-06-17, version 4.3.2* I was contacted by Matt after my issue with the app and he promptly solved it. Thank you for the help. ### 5/5 — Good *2026-06-12, version 4.3.1* Great app ### 5/5 — Amazing *2026-06-08, version 4.3.1* This Application keeps me organized and on time.! ### 5/5 — Best shift calendar *2026-06-03, version 4.3.1* For shift workers this is absolutely the best calendar ever. Been using it all for 10 years now for my 48/96 schedule. Completely customizable to fit your needs and keeps up with trades. Will probably use this even after I retire! ### 5/5 — Great App *2026-06-02, version 4.3.1* This is my “go-to” calendar! ### 5/5 — Sparks *2026-06-02, version 4.3.1* Greatest app highly recommend it ### 5/5 — ! *2026-06-01, version 4.3.1* ! ### 5/5 — Fireman *2026-05-27, version 4.3.1* Great App ### 5/5 — Good *2026-05-26, version 4.3.1* It works well, but they keep asking me to write a review every other day. So hopefully me writing this review will stop them from asking me to write a review. ### 5/5 — Great! But stop asking everyday *2026-05-26, version 4.3.1* Again! Love the app but quit asking me to love you… --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-11.*