Spark vs Work+Proof
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!
Work+Proof
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WorkProof – Document Your Work Sessions Track and document your work with photos, audio notes, and time logs. PHOTO ATTACHMENTS Capture photos to document your work progress and completed tasks. VOICE NOTES Record audio memos up to 5 minutes per session. TIME TRACKING Log work sessions with start/end times, organized by projects. CLOUD SYNC Backup your data securely across devices (premium feature). WORKS OFFLINE Track your work anytime, sync when online. Terms of Use: https://workproof.app/terms
Screenshots
Verdict
The clearest difference is update cadence: Work+Proof at weekly against Spark's every 5 weeks. 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
Both are free to download. Spark sells 2 one-off in-app purchases and Work+Proof sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.
Spark ships an update every 5 weeks, Work+Proof weekly. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.
| Parameter | Spark | Work+Proof |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (7.5K ratings) — better | — |
| Positive reviews | 74.5% of reviews | — |
| Number of ratings | 7.5K — better | — |
| Update frequency | Every 5 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | E.L.K. Equities LLC | Osibits |
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
Work+Proof
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Spark
- Annual Subscription Renewal$0.99
- Initial Annual Subscription$5.99
Work+Proof
- WorkProof Monthly$8.991 Month
- WorkProof Yearly$89.991 Year









