Spark vs Nevvi
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!
Nevvi
Effortlessly manage and share your personal contact information. Update your details once and instantly share them with chosen connections, ensuring everyone has your latest information without manual updates.
- Secure personal information vault
- Customizable privacy controls
- Real-time network updates
- Easy connection management
- Create connection groups
- Intuitive interface
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Never chase down contact information again. Tired of texting friends for their address when sending wedding invites? Frustrated updating your information everywhere after moving? Nevvi puts you in control of your personal information while keeping your connections effortlessly updated. How it works: Store your contact details once in your secure profile Connect with friends, family, and colleagues Control exactly who sees what with custom permission groups When you update your info, everyone you choose gets it instantly Perfect for: - Wedding planners coordinating guest addresses - Anyone who's moved and dreaded updating everyone - Holiday card senders gathering current addresses - Professionals maintaining network contacts - Anyone tired of outdated contact information Your data, your control: Unlike other apps that collect your information, YOU own and manage your personal details. Share your full address with close friends while giving colleagues only your email. It's that simple. Key Features: Secure personal information vault Customizable privacy controls Real-time updates to your network Easy connection management Create groups of connections Clean, intuitive interface The average person updates their contact information over 1,500 times throughout their life. Nevvi lets you do it once and share it on your terms.
Screenshots
Verdict
The clearest difference is in-app purchases: Nevvi at none against Spark's 2. Nevvi also leads on review sentiment (100% vs 75%) and rating (5.0 vs 4.8). Spark's advantage is ratings volume (7.5K vs 4). On price, update cadence, ads 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
Both are free to download. Spark sells 2 one-off in-app purchases. Nevvi asks for nothing beyond the download.
Nevvi 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 4, 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 Nevvi's.
Spark ships an update every 5 weeks, Nevvi every 2 months. The most recent releases landed on October 14, 2026 and October 2, 2026 respectively.
| Parameter | Spark | Nevvi |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (7.5K ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 74.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 7.5K — better | 4 |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 10 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | E.L.K. Equities LLC | Tyler Standal |
Customer experience
Spark
Nevvi
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
Nevvi
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Spark
- Annual Subscription Renewal$0.99
- Initial Annual Subscription$5.99
Nevvi
No in-app purchases









