PolyPDF vs PDFMeasurementTool
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PolyPDF
This app provides a PDF studio for drawing-set review and markup on iPad and iPhone. It allows users to open plans, navigate pages, measure to scale, add various annotations, and save their work. Advanced features are available via an optional Pro purchase.
- Drawing-set review
- PDF markup tools
- Measure to scale
- Add callouts, shapes, stamps
- Markup Table for findings
- Export and share PDFs
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PolyPDF brings drawing-set review and PDF markup to iPad and iPhone. Open plans from Files, move between pages, measure to scale, add markups, and save your work back to a PDF. Built for AEC work • Review multi-page plan sets with thumbnails and tabs. • Measure lengths and areas using a calibrated scale. • Add callouts, clouds, shapes, stamps, and freehand markup. • Count symbols and organize findings in the Markup Table. • Export or share the finished PDF. Your documents remain in the locations you choose in Files. PolyPDF supports an optional Pro purchase for advanced tools; the app shows which features require Pro before purchase. PolyPDF is also available on Mac. Visit polypdf.com for details and support.
PDFMeasurementTool
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CBCT Ruler Pro is the ultimate tool for dental professionals and implantologists who need measurements on the go. Designed specifically for iPad and iPhone, this app allows you to import PDF exports from CBCT scans or standard dental X-rays and perform calibrated measurements with ease. KEY FEATURES: • Precision Measurement: Measure distances, heights, and widths with sub-millimeter accuracy. • Custom Calibration: Ensure 100% accuracy by calibrating the scale against a known reference object in your image. • Implant Planning: Place varying sizes of dental implant silhouettes directly onto your X-rays. • Implant Rotation: Rotate and position implants to visualize optimal placement. • Native PDF Support: Load files directly from your device, iCloud, or email. • Privacy Focused: All processing happens locally on your device. No patient data is ever uploaded to the cloud. Whether you are planning a surgery, verifying a scan, or explaining a procedure to a patient, CBCT Ruler Pro gives you the professional tools you need in the palm of your hand. Terms of use https://cbct-ruler-new-website.pages.dev/terms/
Screenshots
Verdict
The clearest difference is in-app purchases: PolyPDF at none against PDFMeasurementTool's 2. PolyPDF also leads on update cadence (every 3 weeks 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
Both are free to download. PDFMeasurementTool sells 2 in-app purchases, starting at $1.99 per month. PolyPDF asks for nothing beyond the download.
PolyPDF ships an update every 3 weeks, PDFMeasurementTool every 2 months. Both last shipped on October 8, 2026.
| Parameter | PolyPDF | PDFMeasurementTool |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 57 MB | 1 MB |
| Age rating | 4+ | 17+ |
| Developer | Euclidean Software LLC | Lori Azerrad |
In-app purchases
PolyPDF
No in-app purchases
PDFMeasurementTool
- Monthly$1.991 Month
- Cbct Yearly$19.991 Year
Questions
Is PolyPDF free?
Is PDFMeasurementTool free?
Do PolyPDF or PDFMeasurementTool have ads?
Which is updated more often, PolyPDF or PDFMeasurementTool?
Other comparisons
