Comparison

PDF Reader vs Callboard

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

Head to head
About

PDF Reader

This app offers a superior PDF reading experience with its innovative Liquid Mode, which optimizes documents for mobile screens. It also provides robust tools for annotating, signing, managing, and sharing your PDF files, catering to both work and study needs.

Highlights
  • Liquid Mode for optimized mobile reading
  • Annotation tools (pencil, text, highlighting)
  • Handwritten signature insertion
  • File management (move, merge, copy, delete)
  • Cloud service integration (Wondershare, iCloud)
  • Create blank PDFs and folders
Features
Read full description

PDFelement - PDF Reader is a PDF reader using the latest technology. The newly connected Liquid Mode function allows you to enjoy the best reading experience. In addition, there are various annotation tools, file management, signature, Various functions such as cloud services can meet your PDF needs in work and study. PDF VIEWER • Liquid Mode gives you the best PDF reading experience • Star files to find them quickly • Easily locate recently accessed files in the "Recent" list. • Enter the page number to navigate to the desired page for viewing LIQUID MODE • Get the best PDF Reading experience with Liquid Mode • PDF document fully fits the mobile phone screen, no need to zoom in and out repeatedly. • Easily adjust brightness, font size,style, and spacing. ANNOTATE • Using Pencil to annotate like writing on the paper • Add text annotations, freely modify the text and background, border colors, choose the appropriate font and font size. • Supports many annotating tools like highlighting, underlining, squiggly lines, or strikethroughs. MANAGE • Move, merge, copy or delete files SIGNATURE • Enables handwritten signatures to be inserted anywhere within the document, while also offering the ability to zoom in and out for greater flexibility. • Built-in commonly used stamps CREATE • Quickly create completely blank PDF documents • Creat blank folders. SHARE • Sharing document content with others is just a click away with capture feature. • Select sentence(s) or pragraph(s) to share CLOUD SERVICE • PDF Reader supports uploading or downloading docs via computer, Wondershare document cloud and iCloud. Please note that this app only supports editing native PDF files. It does not support editing scanned or raster PDF. If you find you cannot edit text in PDF, please check if it is scanned PDF. Thank you! ---------------------------------------------------------------------------------------- Need HELP? Please contact us! We'll feedback to you ASAP. Email: pdfelement@wondershare.com Support Center: http://support.wondershare.com Forum: http://forum.pdf.wondershare.com Official Website: https://pdf.wondershare.com If you think this App helps you, your positive review in the App Store would be much appreciated.

About

Callboard

Read full description

Built around how theatre actually works. Not a generic project tool in a curtain-print skin. Every screen is designed around the rhythms of rehearsal, the relationships between roles, and the moments that matter. Announcements your cast can't miss One feed for your whole production. Pin announcements so they stay at the top. Mention a person, a role, or an entire group. Everyone tagged gets a push notification, not a message lost in a thread of 200. - Mention by role group: @Cast, @Band, @Crew, @Creative - Pinned announcements always stay visible - Push notifications so nothing gets missed Callsheets that build themselves The production manager enters the running order once: which scenes, who's in them, how long each takes. Callboard works out everyone's individual call time and sends each person only what they need to know. - Call times derived from the breakdown automatically - Each member sees their own call and estimated release - Mark scene coverage live during the rehearsal Notes on the fly Capture notes as they happen, tagged by type, while mentioning whoever needs to see them. When the rehearsal ends, Callboard compiles attendance, scene coverage and every note into a rehearsal report ready to distribute to the creative team. - Note types for blocking, music, choreography and technical - Cast and crew can easily find their notes at a glance - Reports assembled automatically from the session data - Attendance and material coverage tracked in the same place Every script, track and clip in one place Scripts and scores hosted in-app with access controlled by production. No more PDFs forwarded outside the production. Learning tracks tagged by song and voice part. Choreography videos your ensemble can rewatch at home. - Scripts and scores viewable and annotatable in-app - Playback learning tracks grouped by their number and voice part - Choreography or blocking video, streamable in-app Callboard Talent A profile for performers, and a way for companies to find them. List your credits, headshots and showreel, and choose exactly who can see them. - Verified credits, pulled straight from shows cast through Callboard - Choose who can see your profile: your own shows, casting companies, or every member - Search performers by name, skill, voice part, or distance from a town - An applicant's profile arrives right alongside their audition application From first audition to closing night The whole production lifecycle, not just rehearsal week. Auditions Signup forms, audition scheduling, and a casting pipeline from application through to offering the role. Attendance Availability collected ahead of time, attendance marked at rehearsal, all visible in one matrix. Props & costumes Track every item by scene and character, with sourcing status and quick-change warnings. Budget Departmental budgets, expense tracking, income, and a break-even calculator for ticket sales. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

PDF Reader4 screens
Callboard4 screens

Verdict

The call

The clearest difference is in-app purchases: PDF Reader at none against Callboard's 7. Callboard's advantage is update cadence (every 4 days vs every 2 months). On price, ads, device support and iOS requirement 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. Callboard sells 7 in-app purchases, starting at $21.90 per month. PDF Reader asks for nothing beyond the download.

UpkeepUpdate frequency

PDF Reader ships an update every 2 months, Callboard every 4 days. The most recent releases landed on October 14, 2026 and October 13, 2026 respectively.

Scorecard2 real differences · 8 level
PDF Reader versus Callboard: the parameters behind the verdict, then further details
ParameterPDF ReaderCallboard
PriceFreeFree
Rating4.3 (3.9K ratings) — better—
Positive reviews76.7% of reviews—
Number of ratings3.9K — better—
Update frequencyEvery 2 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size173 MB18 MB
Age rating4+4+
DeveloperWondershare Technology (Hunan) Co.,Ltd.Alex Smith

Bugs and requests

PDF Reader

Reported bugs

4 issues
  • Text boxes appearing randomly
  • Inability to select/edit text in some PDFs
  • Scrolling issues and page loading delays
  • Incompatibility with certain PDF formats

Requested features

5 requests
  • Ability to edit text formatting (font, size, color)
  • Support for multiple open documents
  • Improved Apple Pencil integration
  • Bookmark/favorite feature for frequently used PDFs
  • Expanded cloud storage integration (OneDrive, Google Drive, etc.)

Callboard

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

PDF Reader

No in-app purchases

7 purchases

Callboard

Subscriptions6
  • Starter Monthly$21.901 Month
  • Pro Monthly$44.901 Month
  • Company Monthly$90.901 Month
Show 3 more
  • Starter Annual$209.991 Year
  • Pro Annual$429.991 Year
  • Company Annual$869.991 Year
One-time1
  • Callboard Activation$56.00

Questions

Is PDF Reader free?
PDF Reader is free to download, with no in-app purchases.
Is Callboard free?
Callboard is free to download, with in-app purchases available.
Do PDF Reader or Callboard have ads?
Neither PDF Reader nor Callboard shows ads.
Which is updated more often, PDF Reader or Callboard?
PDF Reader ships an update every 2 months, and Callboard every 4 days. Most recently, PDF Reader was updated on October 14, 2026 and Callboard on October 13, 2026.

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