Comparison

Spark vs PDF Editor & Reader

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

Head to head
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!

About

PDF Editor & Reader

Edit, read, and convert documents directly on your device. This app offers tools to scan, merge, split, sign, and protect your files. It also uses AI to summarize, translate, and answer questions about document text.

Highlights
  • Read and mark up PDFs
  • Scan documents with camera
  • Convert PDFs to Word, Word to PDF
  • Organize pages (merge, split, reorder)
  • Sign, protect, and redact documents
  • AI-powered summarization and translation
  • Content search across documents
Features
Read full description

Read, mark up and convert documents right on your iPhone, then share them when you are ready. PDF Studio brings your PDF reader, scanner and everyday document tools into one calm place. The app interface is in English. SUBSCRIPTION REQUIRED PDF Studio is a subscription app. A subscription is required to use the app, and new customers can start with a free trial. The plans, prices and trial length are shown before you commit, and you can cancel anytime. SCAN AND CONVERT Scan paper with the camera, turn photos or typed text into a PDF, and compress a file down to a sensible size. Convert PDF text to an editable Word document, turn Word files into PDFs, or export pages as images. PDF to Word rebuilds the text rather than preserving the original page layout. ORGANIZE PAGES Merge files, split a document, and reorder, rotate or remove pages in a visual grid. Find words across your whole library with content search. SIGN AND PROTECT Fill in forms, draw and place your signature, add a password or a watermark, and black out sensitive areas. Blackouts flatten the affected pages. Compression can change image quality and text searchability; the reduction depends on your file. GET HELP READING Use cloud AI to summarize, ask questions or translate document text into 18 languages. It processes up to the first 25 pages, limited to 16,000 characters. Check important answers against your document. Conversion, markup and text recognition happen on your iPhone. AI sends the document name, extracted text and your questions to a cloud service over an encrypted connection. AI requires internet access. KEEP YOUR FILES TOGETHER Use local folders, favorites and name search. Share through the iPhone share menu. No account is required, and there are no ads. SUBSCRIPTIONS PDF Studio offers weekly and annual subscriptions. Prices are shown in the app before purchase. Restore Purchases is available. Payment is charged to your Apple Account at confirmation, or after an eligible free trial. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel in your Apple Account subscription settings. Any unused trial time is forfeited when you purchase a subscription. Support: https://yx0z7ffx6x6rqydfzwlj4-web.rork.live/support Privacy Policy: https://yx0z7ffx6x6rqydfzwlj4-web.rork.live/privacy Terms of Use: https://yx0z7ffx6x6rqydfzwlj4-web.rork.live/terms

Screenshots

Spark4 screens
PDF Editor & Reader4 screens

Verdict

The call

The clearest difference is monetization model: Spark at free with in-app purchases against PDF Editor & Reader's subscription. Spark also leads on ratings volume (7.5K vs 1) and device support (3 vs 1). PDF Editor & Reader's advantage is review sentiment (100% vs 75%) and rating (5.0 vs 4.8). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Spark sells 2 one-off in-app purchases and PDF Editor & Reader sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

PDF Editor & Reader 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. Written reviews point the same way: 75% of Spark's written reviews are positive against 100% of PDF Editor & Reader's.

UpkeepUpdate frequency

Spark ships an update every 5 weeks, PDF Editor & Reader every 3 weeks. The most recent releases landed on October 14, 2026 and September 30, 2026 respectively.

Scorecard7 real differences · 3 level
Spark versus PDF Editor & Reader: the parameters behind the verdict, then further details
ParameterSparkPDF Editor & Reader
PriceFreeFree
Rating4.8 (7.5K ratings)5.0 (1 ratings) — better
Positive reviews74.8% of reviews100.0% of reviews — better
Number of ratings7.5K — better1
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better18.0
Further details — not scored
Size10 MB21 MB
Age rating4+4+
DeveloperE.L.K. Equities LLCApptimize LLC

Customer experience

Spark

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

PDF Editor & Reader

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

PDF Editor & Reader

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Spark

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

PDF Editor & Reader

Subscriptions2
  • Pro Weekly3 Days trial$4.997 Days
  • PDF Pro Annual$39.991 Year

Questions

Is Spark free?
Spark is free to download, with in-app purchases available.
Is PDF Editor & Reader free?
PDF Editor & Reader is free to download, with in-app purchases available.
Which has better reviews, Spark or PDF Editor & Reader?
PDF Editor & Reader is rated higher. Spark averages 4.8 out of 5 from 7.5K ratings, while PDF Editor & Reader averages 5.0 from 1 ratings.
Do Spark or PDF Editor & Reader have ads?
Neither Spark nor PDF Editor & Reader shows ads.
Which is updated more often, Spark or PDF Editor & Reader?
Spark ships an update every 5 weeks, and PDF Editor & Reader every 3 weeks. Most recently, Spark was updated on October 14, 2026 and PDF Editor & Reader on September 30, 2026.

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