Comparison

Shift Calendar vs PDF Offline Studio

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

Head to head
About

Shift Calendar

Features
Read full description

Plan your shifts, not your stress. Shift Calendar turns any rotating schedule into a clear, color-coded calendar in seconds, built for nurses, doctors, police, firefighters, EMTs, factory and offshore workers. SET UP ONCE, SEE YOUR WHOLE YEAR - Pick a ready-made pattern (4 on 4 off, DuPont, Pitman, 2-2-3, 7/7, 14/14, 5/2) or build your own - Your rotation repeats automatically, months and years ahead - Month, week and year views MADE FOR SHIFT WORKERS - Day, night, off, on-call, holiday and custom shift types with your own colors - Notes, tags and overtime on any day - Shift reminders so you never miss the start of a shift KNOW YOUR WORK-LIFE BALANCE - Hours worked, night shifts and days off per month and year - Earnings estimate from your hourly rate SHARE WITH FAMILY - Family view to see several schedules side by side - Export to PDF, calendar (ICS) or CSV and share in one tap - Share a pattern with coworkers via QR code PRIVATE BY DESIGN No account, no sign-up. Works fully offline. Your schedule stays on your device. PRO Unlock detailed statistics, clean PDF export, multiple profiles, family view and smart alerts. Choose yearly (with a 7-day free trial), monthly or a one-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

PDF Offline Studio

Features
Read full description

Every PDF tool you need. None of your documents ever leave your device. Most free PDF apps quietly upload your files to a server to do the work. This one doesn't, because it can't. The app is built with no internet permission at all. Your contracts, IDs, medical records and tax forms are handled entirely on your phone or Mac. It doesn't keep them either. There's no library and no cloud folder: you open a file, work on it, and save the result wherever you like. Nothing is left behind. PAGES - Merge several PDFs into one - Split a PDF: see exactly where it will divide before you commit - Extract only the pages you want - Delete, rotate and reorder pages by dragging MARK UP - Draw, highlight and add text anywhere on the page - Sign with your finger or mouse - Fill in PDF forms: type into fields, tick boxes, pick from lists - Stamp a page: Draft, Confidential, Approved and eleven more, or make your own - Watermark every page, once or tiled - Add page numbers SECURITY - Redact: removes what's underneath instead of covering it - Flatten PDF: fixes your marks and filled-in forms into the page so nobody can change them - Lock a PDF with a password, or remove one you know READ & TRANSLATE - Translate a whole PDF into another language, laid out where the original text was, or read the translation as clean text with Easy to read - Make searchable: find and copy the text in scanned pages CONVERT - PDF to images, images to PDF: photos go in without their location or camera details - Scan paper documents with the camera, straightened and cropped (iPhone and iPad) - Compress, with an honest warning when there's nothing to gain Redaction is the one worth explaining. Drawing a black box over a name doesn't remove it: anyone can still select the text underneath, and people have lost jobs over exactly that. Redact rebuilds the pages so what you covered is genuinely not in the file, then checks its own work and refuses to hand you the result if any readable text survived. Translation and text recognition use Apple's own frameworks, on your device, like everything else here. Translating needs iOS 18 or macOS 15 or later and the two languages downloaded once by your system; after that it works with no connection at all. It translates into languages written in Latin, Greek or Cyrillic letters. BUILT FOR PRIVACY, NOT MARKETED AS IT - No internet permission: verifiable, not just a promise - No library, no cache, no account, no sign-up - No ads, no analytics, no tracking, no crash reporting - Photos you turn into a PDF lose their location, time and camera details - Works on a plane, in a tunnel, anywhere Free. No subscription, no unlock, no Pro tier. Available in English, Spanish, Portuguese, German, French and Italian.

Screenshots

Shift Calendar4 screens
PDF Offline Studio4 screens

Verdict

The call

The clearest difference is in-app purchases: PDF Offline Studio at none against Shift Calendar's 4. PDF Offline Studio also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.0). On price, update cadence and ads there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Shift Calendar sells 4 in-app purchases, starting at $4.99 per 7 days. PDF Offline Studio asks for nothing beyond the download.

UpkeepUpdate frequency

Shift Calendar ships an update fortnightly, PDF Offline Studio every 2 weeks. The most recent releases landed on October 30, 2026 and October 10, 2026 respectively.

Scorecard3 real differences ยท 3 level
Shift Calendar versus PDF Offline Studio: the parameters behind the verdict, then further details
ParameterShift CalendarPDF Offline Studio
PriceFreeFree
Update frequencyFortnightlyEvery 2 weeks โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPadiPhone, iPad, iPod, Mac โ€” better
Requires iOS17.015.0 โ€” better
Further details โ€” not scored
Size15 MB55 MB
Age rating4+4+
DeveloperEMRE KOTUNTHEJ KUMAR SIDDHOTAM ARULRAJ

In-app purchases

4 purchases

Shift Calendar

Subscriptions3
  • Weekly Premium Access$4.997 Days
  • Monthly Pro$5.991 Month
  • Yearly Premium Access$29.991 Year
One-time1
  • Lifetime Pro$59.99
None

PDF Offline Studio

No in-app purchases

Questions

Is Shift Calendar free?
Shift Calendar is free to download, with in-app purchases available.
Is PDF Offline Studio free?
PDF Offline Studio is free to download, with no in-app purchases.
Do Shift Calendar or PDF Offline Studio have ads?
Neither Shift Calendar nor PDF Offline Studio shows ads.
Which is updated more often, Shift Calendar or PDF Offline Studio?
Shift Calendar ships an update fortnightly, and PDF Offline Studio every 2 weeks. Most recently, Shift Calendar was updated on October 30, 2026 and PDF Offline Studio on October 10, 2026.

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