Comparison

iPDF local vs Opterra

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

Head to head
About

iPDF local

Features
Read full description

Edit and sign PDFs directly on your iPhone, iPad or Mac with Apple silicon. Scan documents using the camera on your iPhone or iPad. iPDF local is your private PDF workspace for everyday document tasks. Open PDFs, add text, highlight content, draw, manage pages or scan documents with a modern interface and without unnecessary cloud dependency. EDIT PDFs WITH EASE • Add text and edit your own text objects • Draw with a pen or highlight content • Add circles, rectangles and stamps • Adjust color, opacity, background and line width • Move, rotate, resize or delete objects • Rotate, reorder, add and remove PDF pages • Create new PDFs • Scan documents with the camera on supported iPhones and iPads • Export and share PDFs PRIVATE AND LOCAL The local PDF editor does not require an account with us. Documents and drafts are stored locally. You decide when to export them or process them with a server you configured yourself. No unnecessary cloud. No data collection by iPDF local. Your documents stay under your control. PRO FOR POWERFUL WORKFLOWS With Pro, iPDF local also becomes a powerful frontend for your own document infrastructure. STIRLING PDF Connect your own Stirling PDF server for advanced tools including: • Merge and split PDFs • Compress files • OCR • Crop and rotate pages • Protect PDFs • Add watermarks • Convert documents • Sanitize PDFs • And more Stirling PDF tools NEXTCLOUD Browse files in your private Nextcloud, open documents directly in iPDF local and return finished files to your own workflow. PAPERLESS-NGX Search your Paperless-ngx archive, open documents in iPDF local and send finished documents back to your document system. FOR EVERYONE — AND POWER USERS You do not need your own server to use iPDF local as a PDF editor. But if you already use Stirling PDF, Nextcloud or Paperless-ngx, iPDF local grows into an exceptionally powerful mobile document workflow. Start for free. Basic includes local editing, page controls and single-page scans. Pro adds handwritten signatures, editable sharing, multi-page scans, non-PDF imports and server integrations. Conversions and server tools require the corresponding service you configure. Unlock Pro Lifetime once — no new subscription required. The current price for your region is shown before purchase. The editor adds PDF content; it does not reconstruct existing PDF body text. Handwritten signatures are not qualified digital signatures. iPDF local is an independent app and is not affiliated with Stirling PDF, Nextcloud or Paperless-ngx.

About

Opterra

Get instant, verified answers to building code questions with an AI assistant trained on trade-specific regulations. Access cited code sections and tables for confident verification. Save references for offline use and listen to responses hands-free.

Highlights
  • AI-powered code question answering
  • State and local code filtering
  • Cited code sections and tables
  • Offline code section saving
  • Text-to-speech responses
Features
Read full description

Building code books contain thousands of sections, change across jurisdictions, and are rarely easy to navigate when you just need an answer. Opterra turns them into something you can actually ask. Ask the assistant a question in plain language and it works through the codes that apply to your jurisdiction to find the answer. Every response points back to the source, so you can tap the citation and read the actual section yourself — including its tables and figures. And for the quick stuff that comes up on the job, Opterra keeps a few essentials close at hand. - Tap-to-open citations that take you directly to the referenced section - Feet, inches & fractions calculator for everyday field math - Equipment and product lookups with the original sources - Chat history, clean copy & read aloud Opterra Assistant gives trade workers fast, reliable answers to building code questions—without searching through books or PDFs. Chat with an AI assistant trained on trade-specific regulations, filtered by state and local county. Every answer is grounded in cited code sections and tables, so you can verify details with confidence. Save referenced code sections for offline access, and listen to responses using high-quality text-to-speech when your hands are busy in the field.Built for real work. Designed for accuracy.Terms of Use:https://www.getopterra.com/terms

Screenshots

iPDF local4 screens
Opterra4 screens

Verdict

The call

The clearest difference is update cadence: Opterra at every 2 weeks against iPDF local's every 3 months. Opterra also leads on iOS requirement (14.0 vs 17.6). On price, ads, in-app purchases and device support 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. iPDF local sells 4 in-app purchases, starting at $0.99 per 7 days and Opterra sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

iPDF local ships an update every 3 months, Opterra every 2 weeks. The most recent releases landed on October 3, 2026 and October 11, 2026 respectively.

Scorecard2 real differences · 7 level
iPDF local versus Opterra: the parameters behind the verdict, then further details
ParameteriPDF localOpterra
PriceFreeFree
Rating—5.0 (5 ratings) — better
Number of ratings—5 — better
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.614.0 — better
Further details — not scored
Size28 MB48 MB
Age rating4+4+
DeveloperThomas RhodeOpterra, Inc.

In-app purchases

4 purchases

iPDF local

Subscriptions3
  • Weekly$0.997 Days
  • Monthly Plan$2.991 Month
  • Annual Subscription$17.991 Year
One-time1
  • Lifetime Purchase$8.99
2 purchases

Opterra

Subscriptions2
  • Opterra Pro3 Days trial$9.991 Month
  • Opterra Pro7 Days trial$89.991 Year

Questions

Is iPDF local free?
iPDF local is free to download, with in-app purchases available.
Is Opterra free?
Opterra is free to download, with in-app purchases available.
Do iPDF local or Opterra have ads?
Neither iPDF local nor Opterra shows ads.
Which is updated more often, iPDF local or Opterra?
iPDF local ships an update every 3 months, and Opterra every 2 weeks. Most recently, iPDF local was updated on October 3, 2026 and Opterra on October 11, 2026.

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