PDF Viewer by Nutrient vs Efficiver
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Viewer by Nutrient
Easily view, search, and annotate PDF documents on your iPhone and iPad. Import files from cloud services, fill out forms, add signatures, and organize your documents. Advanced features like redaction and combining documents are available with a Pro subscription.
- View and search PDFs
- Annotate with highlights and notes
- Sign documents digitally
- Fill out PDF forms
- Organize and share documents
- Import from cloud services
Read full descriptionHide full description
PDF Viewer is a fast and beautiful app, allowing you to view, search, and annotate PDF documents with ease on your iPhone and iPad. Access your files from iCloud, Dropbox, Box, OneDrive, Google Drive or any other cloud solution via Apple's familiar Document Browser interface. +++ Listed as “Productivity lifesaver” on the App Store +++ "A streamlined interface packed with powerful features - it’s like having a desktop-quality PDF toolkit wherever we go" – App Store Editor Notes “I'm impressed by how the folks at PSPDFKit have been able to fine-tune the document browser to the app's needs.” – MacStories.net "If you want a PDF viewer that is designed for reading PDF books, this is it." – App Review VIEW DOCUMENTS ON THE GO • Easily import a PDF from your favorite cloud service provider, email, or directly off a website. • Supports Open In Place, Drag & Drop and features the familiar Apple Document Browser interface from the Files app. • Search for the exact text you are looking for within the document. • Double tap on the screen to Smart Zoom directly to the text you want to read. • Annotate images (JPEG, PNG) non-destructive, just like PDF documents. (PRO) ANNOTATE WITH EASE • While reviewing a document, use your finger or Apple Pencil to highlight and markup text. • Leave comments by adding a note, text, or drawing directly on the PDF. • Add images or audio. • Reply to notes. (PRO) SIGN DOCUMENTS ANYWHERE • Add your signature to any document using your finger or Apple Pencil. • Move and resize your signature as needed. • Flatten a document to ensure the signature doesn’t change. CREATE AND EDIT PDFs • Create new documents from existing documents by moving, rotating, deleting, or adding new pages. • Combine multiple documents into a single one. (PRO) • Add bookmarks to easily return to certain pages in large documents. FILL OUT FORMS • Quickly fill out PDF Forms by adding text to the fields. • Flatten and secure the form once you’re done to ensure the document doesn’t change. • Add a signature to any Form. STORE, ORGANIZE AND SHARE • Store documents, create folders and organize your documents. • Share documents by printing, emailing or saving your edits back any cloud service. PASSWORD PROTECT DOCUMENTS • Read document metadata, title and keywords. • Protect documents with user and owner passwords and limit permissions. (PRO) AND SO MUCH MORE • Conveniently switch to night mode when viewing your documents at night. • Present on external screens without the distraction of toolbars. (PRO) • Have the text from a PDF read out loud to you with text-to-speech. • PDF Viewer remembers where you were down to the page/position where you left off - even across devices. PRICING PDF Viewer comes with a large feature set, completely free. Some advanced features require the purchase of PDF Viewer Pro, available as a subscription. We offer 3-monthly and yearly subscription plans. There’s also a fully functional 7-day trial, so you can test PDF Viewer Pro (including document merging and password editing) before you commit. All plans unlock the app on iPhone and iPad. TRUSTED BY COMPANIES YOU KNOW PDF Viewer is built on top of and powered by PSPDFKit, the same PDF engine trusted around the world by companies like Dropbox, Box, IBM, Atlassian, SAP, and Lufthansa. BE PART OF THE PDF VIEWER COMMUNITY pdfviewer.io twitter.com/pdfviewerapp LEGAL Duration and price of each subscription are displayed in PDF Viewers’ storefront, updated at the time of purchase. Payment will be charged to iTunes account at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off no later than 24 hours before the end of the current period. Subscriptions and auto-renewal can be managed/turned off in the iTunes account settings. Any unused portion of a free trial period is forfeited as soon as a subscription is purchased. Terms of Use: https://pdfviewer.io/terms Privacy Policy: https://pdfviewer.io/privacy
Efficiver
Read full descriptionHide full description
Efficiver — Efficient + Driver. Save. Drive. Live. Offline. Anytime. Anywhere. Real-time driving feedback that runs on your iPhone. No insurer dashboard. No ads. No advertising IDs. Just your drive, scored in real time, every trip. Efficiver is built for drivers who care about how they drive. The Efficiency Score updates live as you drive, blending speed, acceleration, idle time, gear use, route choice, and weather. Save a session and see exactly where the orange and red markers landed — and what to do next time. WHAT YOU GET Real-time Efficiency Score A single live score that reflects how efficient your driving is, second by second. Calibrated to your vehicle on first setup. AI-narrated insights, on-device (NEW in v1.5) Your Year in Driving and Your Patterns are written by Apple Intelligence, running entirely on your iPhone. Efficiver computes every number; the AI only puts them into words. Nothing leaves your device. Part of Efficiver Pro. Trends and patterns (NEW in v1.5) Your average efficiency at a glance, patterns that always have something to tell you, and an efficiency chart you can drag across to inspect any day. Apple Watch app Start and stop drives from your wrist, glance at your live score, distance and time mid-drive, and add the complication to your watch face. Smarter savings Wallet Watch prices your driving with a physics-based power model across your entire drive history. Every drive is priced under the fuel type you drove it with, so switching vehicles never rewrites your past savings. Live stats on your Lock Screen The Live Activity shows your score, distance and mistakes updating live through the drive — on the Lock Screen and Dynamic Island. CarPlay support Drive with your phone in your pocket. Tap Drive on your car's screen, see your live score and distance on the head unit, tap Stop to save. Voice prompts play through your car's audio. Interactive drive map Full-screen Apple Maps view that follows you as you drive, with markers showing exactly where each acceleration or braking event happened. Year Recap A shareable card with your year's driving stats — total kilometres, average efficiency, top drives, savings. Hands-free Siri voice control "Start drive in Efficiver" starts tracking in the background; "Stop drive in Efficiver" saves and speaks your score. Smart Detection (on-device ML) Efficiver learns your engine's signature with Apple's machine-learning frameworks — entirely on-device. No cloud calls. iCloud sync Sessions and your trained model sync across your devices via your own iCloud account. Join a fleet (invite only) Drives for an employer that runs Efficiver Fleet? Enter the invite code they give you. While you are on duty, those drives are shared with your fleet; off-duty drives stay on your phone. You choose when you are on duty, and you can leave the fleet at any time. ACCESSIBILITY Built accessibility-first: • Full VoiceOver support across every screen • Dynamic Type from default through AX5 • Reduce Motion, Reduce Transparency, Bold Text respected • Differentiate Without Color (every marker has a shape or text label) • Lifecycle announcements (Drive started, stopped, saved) PRIVACY Your drives are recorded and scored on your iPhone. GPS waypoints are stored locally, and on-device intelligence sends nothing off the device. iCloud sync uses your private iCloud database — no shared records, no advertising IDs, no data brokers. The one exception is fleets: if you join one with an invite code, drives you record while on duty are shared with that fleet so your employer can see them. You are told this before joining and must consent. Off-duty drives — and every drive if you never join a fleet — stay on your phone. REQUIREMENTS iPhone running iOS 26 or later. AI-narrated insights need an Apple Intelligence-capable device with the feature enabled. Apple Watch, CarPlay and iCloud optional. Save. Drive. Live. Offline. Anytime. Anywhere.
Screenshots
Verdict
The clearest difference is in-app purchases: Efficiver at none against PDF Viewer by Nutrient's 2. PDF Viewer by Nutrient's advantage is device support (4 vs 2) and iOS requirement (17.0 vs 26.0). On price, update cadence and ads 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. PDF Viewer by Nutrient sells 2 in-app purchases, starting at $6.99 per 3 months. Efficiver asks for nothing beyond the download.
PDF Viewer by Nutrient ships an update monthly, Efficiver every 2 weeks. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.
| Parameter | PDF Viewer by Nutrient | Efficiver |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (9.1K ratings) — better | — |
| Positive reviews | 73.6% of reviews | — |
| Number of ratings | 9.1K — better | — |
| Update frequency | Monthly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, Mac, Vision Pro — better | iPhone, Apple Watch |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 112 MB | 23 MB |
| Age rating | 4+ | 17+ |
| Developer | PSPDFKit GmbH | Dhamodharan Krishnan |
Bugs and requests
PDF Viewer by Nutrient
Reported bugs
4 issues- Annotations randomly disappearing or not saving
- Incompatibility issues with certain PDF files
- Scrolling and panning problems on large PDFs
- Unexpected crashes after iOS updates
Requested features
5 requests- Add a rubber/eraser tool for annotations
- Implement a side-by-side PDF view mode
- Improve palm rejection and gesture support
- Allow customization of toolbar and shortcuts
- Provide better options for PDF file management
Efficiver
Not enough reviews yet to summarise bugs or requests.
In-app purchases
PDF Viewer by Nutrient
- PDF Viewer Pro 3 Months7 Days trial$6.993 Months
- PDF Viewer Pro Yearly7 Days trial$19.991 Year
Efficiver
No in-app purchases









