Comparison

Aspose.PDF vs Therblig

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

Head to head
About

Aspose.PDF

This application provides a comprehensive suite of tools for managing PDF files, including conversion, editing, optimization, and security features. It allows users to compress, merge, split, rotate, and protect PDFs, as well as convert them to and from various formats like Word, Excel, and images. The app also offers OCR capabilities and a PDF viewer.

Highlights
  • Compress PDF files
  • Merge and split PDFs
  • Convert PDF to Word, Excel, PPT, and images
  • Protect PDFs with passwords
  • Add watermarks and signatures
  • Scan documents to PDF
  • OCR for searchable PDFs
Features
Read full description

Aspose.PDF is a completely free, powerful, and easy-to-use PDF editor that puts every PDF tool you need in one place. Edit PDF, convert PDF to Word, scan documents, sign PDFs, compress, merge, split, and secure files — all from a clean, intuitive interface. Note: An active internet connection is required, as the app works with Aspose.PDF Cloud. Works on any device Secure – no data shared Powered by Aspose.PDF Cloud Key Features Edit & Annotate PDFs Draw on PDF using your finger or stylus Add images from gallery or camera Add watermark or crop pages Remove Watermark from PDFs (New) Change Fonts in your PDF (New) Remove comments and clean up annotations in seconds Convert PDFs PDF to Word, Excel, PowerPoint, and Text PDF to SVG (New) Webpage to PDF (New) PDF page to image and image to PDF Images to PDF (JPG, PNG, BMP) Manage PDF Pages Split and merge PDF files Reorder, rotate, and delete pages Add customizable page numbers Secure PDFs Password-protect or unlock PDFs in one tap Repair & Optimize Repair PDF: fix damaged or corrupted files (New) Compress PDF to reduce file size Resize PDF while maintaining quality Archive mode for long-term storage Scan & OCR Scan to PDF using camera or gallery OCR PDF to make scanned documents searchable Extract & Compare PDF to Text: pull clean text for easy reuse Compare PDFs to spot differences instantly Sign & Organize Sign PDF with handwritten signatures Edit metadata to view or update document info Why Choose Aspose.PDF? Lightweight – runs smoothly on low-end devices Cloud-based – no heavy processing on your phone Privacy first – no data tracking or sharing User-friendly – fast, simple interface with professional tools Feedback & Suggestions We're always improving! Email us anytime: marketplace@aspose.cloud

About

Therblig

This app is a time study instrument designed for industrial engineers to measure work elements, rate performance, and calculate standard times. It offers a unique cycle dial for real-time pace tracking and robust statistical analysis tools. Data can be exported for further analysis in spreadsheets.

Highlights
  • Continuous method timing
  • Cycle dial for pace tracking
  • Out-of-sequence work capture
  • Statistical analysis and outlier detection
  • Performance rating with leveling guide
  • PFD allowance application
  • CSV data export
Features
Read full description

Therblig is a stopwatch time study instrument built for industrial engineers — on the pick line, the packout wall, the assembly cell, anywhere work needs a standard. Named for the elemental motions of Frank and Lillian Gilbreth, Therblig runs the classic continuous method end to end: break the job into elements, time cycles on the floor, rate performance, apply allowances, and read a statistically defensible standard time — all on the device in your hand. THE CYCLE DIAL Every element becomes an arc on a live chronograph dial, sized by its observed mean. One revolution of the hand is one mean cycle, so you can see at a glance whether the operator is ahead of or behind pace. Lap with one thumb; the sequence advances itself. BUILT FOR REAL FLOORS • Continuous-method timing — the master clock never stops, so nothing is lost • Out-of-sequence work: tap any element pad and the reading is credited correctly • Foreign elements capture interruptions without polluting your data • Undo removes a mis-tap and rewinds the sequence • Large touch targets that work at arm's length STATISTICS YOU CAN DEFEND • Every reading plotted on a dot strip — outliers jump out; tap to exclude or restore • Sample-size check: n′ for ±5 percent precision at 95 percent confidence, per element • Coefficient of variation, standard deviation, and cycle-time trend per element • Coverage meter tells you plainly: sample sufficient, or keep timing FROM OBSERVED TIME TO STANDARD • Performance rating per element, by hand or with the built-in Westinghouse leveling guide (skill, effort, conditions, consistency) • PFD allowances applied study-wide • Standard time, standard minutes, and units per hour — recalculated live • Frequency handling for irregular elements (a pallet change once every ten cycles is 0.1) YOUR DATA, YOUR SPREADSHEET Export any study as a clean CSV — study header, full results table, and every raw reading — ready for Excel and your labor-management system. Everything stays on your device: no account, no sign-in, no data collection. FREE TO START, ONE PURCHASE FOREVER The free version includes two complete studies with every feature — enough to run a real study and trust the tool. Therblig Pro unlocks unlimited studies with a single one-time purchase. No subscription. Your stopwatch never stops working. Built by people who care about work measurement, for the engineers who set the standard.

Screenshots

Aspose.PDF4 screens
Therblig4 screens

Verdict

The call

The clearest difference is rating: Therblig at 5.0 against Aspose.PDF's 3.9. Therblig also leads on review sentiment (100% vs 80%) and update cadence (weekly vs every 4 weeks). Aspose.PDF's advantage is in-app purchases (none vs 1) and ratings volume (15 vs 2). 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. Therblig sells 1 one-off in-app purchase. Aspose.PDF asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Therblig holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Aspose.PDF has 15 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 80% of Aspose.PDF's written reviews are positive against 100% of Therblig's.

UpkeepUpdate frequency

Aspose.PDF ships an update every 4 weeks, Therblig weekly. The most recent releases landed on October 24, 2026 and October 4, 2026 respectively.

Scorecard6 real differences · 4 level
Aspose.PDF versus Therblig: the parameters behind the verdict, then further details
ParameterAspose.PDFTherblig
PriceFreeFree
Rating3.9 (15 ratings)5.0 (2 ratings) — better
Positive reviews80.0% of reviews100.0% of reviews — better
Number of ratings15 — better2
Update frequencyEvery 4 weeksWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size42 MB2 MB
Age rating4+4+
DeveloperAspose Pty LtdMarcelo Maldonado

Customer experience

Aspose.PDF

All ratings15 ratings
Positive73.3%
Neutral0.0%
Negative26.7%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

Therblig

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Aspose.PDF

No in-app purchases

1 purchases

Therblig

One-time1
  • Therblig — Time Study$39.99

Questions

Is Aspose.PDF free?
Aspose.PDF is free to download, with no in-app purchases.
Is Therblig free?
Therblig is free to download, with in-app purchases available.
Which has better reviews, Aspose.PDF or Therblig?
Therblig is rated higher. Aspose.PDF averages 3.9 out of 5 from 15 ratings, while Therblig averages 5.0 from 2 ratings.
Do Aspose.PDF or Therblig have ads?
Neither Aspose.PDF nor Therblig shows ads.
Which is updated more often, Aspose.PDF or Therblig?
Aspose.PDF ships an update every 4 weeks, and Therblig weekly. Most recently, Aspose.PDF was updated on October 24, 2026 and Therblig on October 4, 2026.

Other comparisons