PolyPDF vs AIRSTEP GP
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.
AIRSTEP GP
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AIRSTEP GP dedicated control app. Works exclusively for the AIRSTEP GP Edition foot controller. Take control of your AIRSTEP GP Edition in a simple and intuitive way. Configure expression pedals, Scenes, control schemes, dual-press functions, and effect type cycling from your mobile device. Whether you need faster setup, easier customization, or a smoother live workflow, the AIRSTEP GP app keeps everything simple and accessible.
Screenshots
Verdict
The clearest difference is iOS requirement: AIRSTEP GP at 13.0 against PolyPDF's 17.0. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
PolyPDF ships an update every 3 weeks, AIRSTEP GP fortnightly. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.
| Parameter | PolyPDF | AIRSTEP GP |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 57 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Euclidean Software LLC | XSONIC Inc. |
In-app purchases
PolyPDF
No in-app purchases
AIRSTEP GP
No in-app purchases
