Comparison

Tungsten Power PDF Mobile vs RigSync Calendar

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

Head to head
About

Tungsten Power PDF Mobile

This application offers robust PDF viewing and editing capabilities on mobile devices. It allows for annotation, form filling, signature creation, and document management, with cloud integration for easy sharing.

Highlights
  • Fast PDF opening
  • Annotation and markup tools
  • Form filling
  • Digital signature creation
  • Cloud document sharing
  • Document management
Read full description

Tungsten Power PDF Mobile is an easy-to-use PDF viewer and editor providing instant access to your PDF files anytime, anywhere. Tungsten Power PDF Mobile takes PDF viewing to a whole new level and ensures a high-quality mobile PDF reading experience with a rich set of functions. PDF viewing: - Experience the industry-leading document-opening speed. - View PDF packages, comments, attachments, and encrypted documents. - Choose from single-page view or continuous view. - Switch between day and night modes to easily to protect your eyes. - Reach the corresponding page by page number. - Add and edit bookmarks quickly. - Search the document. - Reflow the text for easier reading or keep the original layout. Annotations and markups: - Use highlight, cross-out, and underline to add comments to a document with customizable color and opacity. - Add a text note anywhere in the PDF. - Use Draw Tools to markup PDF content with customizable color, thickness, or opacity. Move and undo are also supported. - Use the rich set of draw tools, such as line, arrow, rectangle, and oval. - Use Clear All to delete all annotations. Form filling and handwriting signature: - Fill PDF forms. - Draw your signature on the screen. - Save signatures for future use. - Resize your signature as you like. Document management: - Rename documents. - Select single or multiple documents to share. - Select and delete multiple documents. Online document sharing: - Load or save documents via Dropbox. - Add WebDAV servers to upload and download documents easily. - Access documents in Tungsten Power PDF Mobile or upload documents from the web (permissions adjustable), breaking the barrier between computer and mobile.

About

RigSync Calendar

Features
Read full description

Master your rotation and take control of your finances with RigSync Calendar. designed specifically for the demanding schedules of oilfield professionals, working both offshore and onshore. RigSync Calendar eliminates the guesswork from your complex roster. Forget spreadsheets and manual calculations; effortlessly track your hitch, manage your time off, and estimate your monthly earnings in one secure place. Key Features: Smart Roster Management: Simply select the days you are onboard or on-site. The app automatically calculates your upcoming days off based on your rotation. Financial Clarity: Input your base salary and daily rates for precise income tracking. Track Sold Days Off: Easily log "sold days" (buybacks) and set custom values per day to see how extra work impacts your final paycheck. Real-Time Income Estimator: Get an instant overview of your estimated payout at the end of the month based on your logged shifts and extras. Work History: Maintain a comprehensive log of your time onboard/on-site. View summaries of total days worked monthly and yearly. Multi-Profile Support: Manage details for different companies or contracts if you switch jobs. Download RigSync Calendar today and keep your work life and your wallet perfectly aligned.

Screenshots

Tungsten Power PDF Mobile4 screens
RigSync Calendar4 screens

Verdict

The call

The clearest difference is price: Tungsten Power PDF Mobile at Free against RigSync Calendar's $5.99. RigSync Calendar's advantage is update cadence (every 6 days vs every 20 months). On ads, in-app purchases, 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

Tungsten Power PDF Mobile is free to download; RigSync Calendar costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Tungsten Power PDF Mobile ships an update every 20 months, RigSync Calendar every 6 days. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.

Scorecard2 real differences · 8 level
Tungsten Power PDF Mobile versus RigSync Calendar: the parameters behind the verdict, then further details
ParameterTungsten Power PDF MobileRigSync Calendar
PriceFree — better$5.99
Rating3.6 (8 ratings) — better—
Positive reviews28.6% of reviews—
Number of ratings8 — better—
Update frequencyEvery 20 monthsEvery 6 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.0 — better15.1
Further details — not scored
Size41 MB32 MB
Age rating4++4
DeveloperTungsten Automation CorporationJoel Marambaia

In-app purchases

None

Tungsten Power PDF Mobile

No in-app purchases

None

RigSync Calendar

No in-app purchases

Questions

Is Tungsten Power PDF Mobile free?
Tungsten Power PDF Mobile is free to download, with no in-app purchases.
Is RigSync Calendar free?
RigSync Calendar costs $5.99, with no in-app purchases.
Do Tungsten Power PDF Mobile or RigSync Calendar have ads?
Neither Tungsten Power PDF Mobile nor RigSync Calendar shows ads.
Which is updated more often, Tungsten Power PDF Mobile or RigSync Calendar?
Tungsten Power PDF Mobile ships an update every 20 months, and RigSync Calendar every 6 days. Most recently, Tungsten Power PDF Mobile was updated on November 3, 2026 and RigSync Calendar on November 9, 2026.

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