DartPDF vs NexternAI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DartPDF
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DartPDF is a PDF editor that runs entirely on your device. Open any PDF to mark it up, fill in forms, sign it, redact content, rearrange pages, or edit the text and images on the page. Changes save back to the original file. Nothing is uploaded. There's no account, no sync, and no ads. Features: • Highlight, underline, strikethrough, and freehand ink • Shapes, arrows, text boxes, notes, and stamps • Edit existing text and add images • Redaction that removes the covered text and images from the file, not just from view • Fill form fields (text, checkboxes, radio buttons, dropdowns), or add your own • Drawn signatures placed anywhere, plus certificate-backed PAdES digital signatures • OCR scanned PDFs so text can be selected and searched • Reorder, delete, and export pages to a new file • Full-text search, text selection, and links • Compare two versions side by side • Open password-protected files Runs on iPhone, iPad, and Mac. Opens PDFs from the Files app, share sheets, or drag-and-drop. Light and dark themes.
NexternAI
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Land your next role with prep built from the actual job, not generic flashcards. NexternAI turns any job posting into a complete interview preparation plan: mock interviews, live voice practice, role-matched challenges, weekly exams, and tailored resume tools all aligned to the role, stack, and language of the job. HOW IT WORKS 1. Paste a job posting (text, PDF, or photo) or start from a listing in Jobs 2. AI builds a personalized multi-week roadmap with study materials and realistic questions 3. Practice with the modes that fit your role: Mock, Quiz, Coding (when relevant), Live AI Interview, or the Practice tab anytime 4. Level up AI skills in Courses — enroll, study, and check your knowledge without leaving the app 5. Track jobs, tailor your resume, and apply with confidence PREP THAT MATCHES THE JOB • Plans sized to the role from focused 1–2 week sprints to fuller multi-week roadmaps • Built for software roles (iOS, Backend, Frontend, DevOps/SRE, ML, and more) and non-engineering roles (product, design, sales, marketing, ops, and similar) • Coding challenges and live coding only when the job actually calls for them • Weekly progress exams (100 points per week) plus study materials you can open in-app and mark done • Job-specific mock questions, drills, and live interview scripts • Plans adapt from Junior through Staff/Principal LIVE AI INTERVIEW Practice like the real thing with a voice-based AI interviewer: • Verbal Q&A tailored to your role and the posting • Job-specific coding challenge with scored feedback when the role is technical • The AI pushes back on vague, incomplete, or off-role answers, just like a real interviewer PRACTICE MODES • Mock Interview: conversational Q&A with feedback between questions • Live AI Interview: speak naturally with real-time AI responses • Quiz / Test Prep: multiple choice with instant explanations • Coding Exam: timed challenges with AI code review (for technical roles) • Practice: unlimited Easy / Medium / Hard problems in the language you choose • Courses: enroll in AI paths from beginner through expert, then resume where you left off COURSES Build AI expertise with structured courses you can enroll in: • Paths from foundations and prompt engineering through RAG, agents, and production AI • Lesson cards plus related books and helping material that open in the app • Course videos that play in the app • 24-question Easy / Medium / Hard level checks drawn from the reading, with saved scores CODING PRACTICE • Solve interview-style problems with a live editor and real test cases • Languages: JavaScript, Python, Swift, Kotlin, Dart, Java, C, and C++ • Run Tests checks public samples; Submit also runs hidden tests without revealing inputs • Instant pass/fail in the console so you know what to fix before the real screen JOBS TRACKER • Browse remote and regional roles from multiple sources • Search and filter by category, region, and recency (24h, 1 week, and more) • Resume match score shows how well you fit each posting • Track Saved → Ready to Apply → Applied in My Jobs RESUME & APPLICATION TOOLS • Import your resume from PDF, photo, or paste • ATS resume score with actionable checks • AI-tailored resume and cover letter per job • Region-aware formatting (US, UK, EU, Germany, France, Canada, Australia) • Export PDFs and reuse recent versions MULTI-LANGUAGE SUPPORT Job posting in German, Dutch, French, or Spanish? Your prep plan, weekly exams, and live interview follow the job’s language — not just English UI defaults. RESULTS YOU CAN ACT ON • Score out of 100 with a hiring recommendation • Breakdown across Technical, Problem Solving, Communication, and Coding (when applicable) • Strengths, weak areas, and next steps before your real interview PRIVACY FIRST Your data stays on your device. No account required to get started. Download NexternAI and turn your next job posting into a plan. Terms (Apple EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: DartPDF at every 3 days against NexternAI's weekly. DartPDF also leads on device support (4 vs 2). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
DartPDF ships an update every 3 days, NexternAI weekly. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.
| Parameter | DartPDF | NexternAI |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days — better | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 47 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Railway Engineering Solutions Pty Ltd | Umar Muzaffar |
In-app purchases
DartPDF
No in-app purchases
NexternAI
No in-app purchases









