Notes Writer vs Surge AI

Side-by-side comparison of features, pricing, and ratings

Analysis reviewed Live tool data as of 2026-10-18
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At a glance

DimensionNotes WriterSurge AI
Target AudienceApple users (students, teachers, writers, professionals)AI labs and enterprise teams training frontier models
Core FunctionWriting, PDF annotation, and note-takingExpert human feedback for RLHF, red teaming, and AI benchmarking
PlatformiOS, iPadOS, macOS onlyCloud-based with Python SDK and REST API
CollaborationNo real-time multi-user editingCollaborative via API and shared benchmarks
Key Latest NewsNo recent newsMicrosoft used Surge for MAI-Thinking-1 eval; launched Antidote leaderboard; Riemann-bench, GDP.pdf, ComplexConstraints benchmarks

Choose Notes Writer if you're an Apple user needing a polished all-in-one writing and PDF tool with Apple Pencil support and rich cloud sync. Choose Surge AI if you're training or evaluating cutting-edge AI models and need expert human feedback, advanced RLHF, and rigorous benchmarks like Antidote, Riemann-bench, and GDP.pdf—backed by recent Microsoft adoption.

Try Notes WriterTry Surge AI
Notes Writer
Notes Writer

Notes Writer is a handwriting, PDF annotation and Word, Markdown, RTF and LaTeX writing app for iPad, iPhone and Mac.

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Surge AI
Surge AI

Surge AI supplies expert human RLHF data, red teaming, and public agent benchmarks like GDP.xlsx and the Tuesday Work Index to frontier

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Pricing
Freemium
Contact Sales
Plans
$0
$6.99/mo
$39.99/yr
$89.99
—
Popularity
6 views
7.4k views
Skill Level
Intermediate
Advanced
API Available
Platforms
MobileDesktop
Web
Categories
📝 Notes & Knowledge Management📄 PDF & Document Tools
🏷️ Data Labeling & Training Data
Features
Handwrite and sketch with pens, pencils, fountain pens, markers and watercolor tools
Refine handwriting with eraser, lasso and ruler, plus shapes, text and images
Annotate PDFs with highlights, ink, comments, shapes and attachments
Fill PDF forms, add signatures, organize pages and apply text redactions
Record voice notes and search transcribed spoken words beside the original audio
Type formatted text directly onto PDF and notebook pages, flowing onto new pages
Create and edit DOCX / Microsoft Word documents with images and formatting
Write RTF with rich text, inline images and equations in a paginated editor
Write and preview Markdown / MultiMarkdown with rendered export
Write LaTeX source and compile it to a typeset PDF with preview
Structure long work in Study Projects with a tree-like Binder
Plan documents on the Corkboard using cards and synopses
Compile selected sections into PDF, DOCX, RTF or EPUB output
Organize Outline Notes with nested branches and OPML import/export
Map a topic on Whiteboard documents with notes, images, recordings and tables
Expert human workforce of doctors, lawyers, engineers, and writers for frontier AI training data
RLHF preference data collection and human feedback for model fine-tuning and post-training
Red teaming and adversarial testing staffed with credentialed domain specialists
Off-the-shelf post-training runs built on expert evaluation data
SWE consultant network for software engineering and technical tasks
GDP.xlsx benchmark for professional spreadsheet comprehension across 70 tasks and 12 domains
sudo L7 benchmark for staff-level engineering judgment in coding agents
GDP.pdf benchmark for real-world professional document comprehension
Chartography benchmark for chart reasoning: Kaplan-Meier curves, candlesticks, contour maps, Bode plots
ComplexConstraints benchmark for instruction following with mutually dependent constraints
HANDBOOK.md benchmark for long-context policy adherence against expert handbooks
DAYJOB vertical benchmark suites for economically valuable Healthcare and Finance agents
Tuesday Work Index composite benchmark scoring frontier models on real professional work
RL environments including CoreCraft and EnterpriseBench with Python SDK and REST API access

What real users say: Notes Writer vs Surge AI

Not marketing copy and not our opinion — a structured sweep of public discussion (reviews, forums, communities and video comments), showing what people praise and what they complain about for each tool.

Notes Writer

35 mentions across 2 sources · 19% positive — critical (averaged across 2 sources)

App Store, Lemmy

What users praise

  • • Rich templates ideal for teachers and students to organize notes.
  • • Easy to use for basic note-taking once the paywall is passed.
  • • Built-in dictionary, thesaurus, and research panel for deep focus.
  • • Distraction-free writing mode is praised by those who can access it.

What frustrates them

  • • Free tier is aggressively limited—blocks notes after a tiny quota.
  • • Paid features often fail to unlock across devices with same account.
  • • IAP pricing model feels bait-and-switch to long-time users.
  • • Apple Pencil support breaks after purchasing full version.

Researched Jul 3, 2026

Surge AI

46 mentions across 3 sources · 52% positive — mixed (weighted across 3 sources)

Hacker News, YouTube, Lemmy

What users praise

  • • Credentialed workforce of doctors, lawyers, engineers, and writers — not open-call crowd annotators
  • • HANDBOOK.md is widely cited as evidence that long-context policy adherence is genuinely hard
  • • Late-2026 catalog breadth: GDP.xlsx, sudo L7, DAYJOB, Chartography, ComplexConstraints, Tuesday Work Index
  • • Kimi K2.7 post-training run produced concrete gains (+20.0pp SWE-Marathon) as a public proof point

What frustrates them

  • • Pricing is 'contact' only — no public tiers, no rates, frustrating for procurement and comparison
  • • Benchmarks are self-published; HN commenters question methodology and potential sponsor influence
  • • Independent alternatives (GDPVal-AA, Terminal-Bench 4.0, FrontierCode) erode the differentiation case
  • • Gig applicant screening is brutal — YouTube reviewers warn this is 'not for everyone'

Researched Oct 14, 2026

Who should pick which

  • Student with iPad
    Pick: Notes Writer

    Can annotate PDFs, write notes with Apple Pencil, record lectures, and sync via iCloud—all in one app without needing multiple tools.

  • AI safety researcher
    Pick: Surge AI

    Needs expert-graded evaluations for red teaming, Riemann-bench for math reasoning, and Antidote leaderboard comparisons—core Surge offerings.

  • Freelance writer
    Pick: Notes Writer

    Distraction-free mode, Markdown export, and cloud sync across Mac/iPad make it ideal for drafting articles and novels.

  • Enterprise AI team building RLHF pipeline
    Pick: Surge AI

    Access to domain experts, ComplexConstraints for instruction tuning, and API integration for large-scale post-training data.

  • Professional filling PDF forms
    Pick: Notes Writer

    PDF annotation, form filling, and signature support work seamlessly on iPhone/iPad/Mac without needing Adobe Acrobat.

Frequently Asked Questions

Notes Writer vs Surge AI: which should you choose?

Choose Notes Writer if you're an Apple user needing a polished all-in-one writing and PDF tool with Apple Pencil support and rich cloud sync. Choose Surge AI if you're training or evaluating cutting-edge AI models and need expert human feedback, advanced RLHF, and rigorous benchmarks like Antidote, Riemann-bench, and GDP.pdf—backed by recent Microsoft adoption.

Can Notes Writer be used on Android or Windows?

No, it is exclusively for iOS, iPadOS, and macOS.

Does Surge AI support automated evaluations without humans?

No, Surge focuses on human expert feedback; it is not a fully automated evaluation platform.

Is Notes Writer available for free?

Yes, it has a free tier with basic features; Pro unlocks advanced capabilities like PDF editing and more cloud storage.

How does Surge AI price its services?

Pricing is custom based on the project—contact sales for a quote.

Does Notes Writer support real-time collaboration?

No, it does not have multi-user editing; it is designed for individual use.

What benchmarks does Surge AI offer?

Antidote (expert-graded leaderboard), Riemann-bench (extreme math), GDP.pdf (PDF understanding), ComplexConstraints (instruction following), and EnterpriseBench for agentic RL environments.

Can I sync Notes Writer with Google Drive?

Yes, it supports iCloud, Dropbox, Google Drive, OneDrive, Box, and WebDAV.

Has Surge AI been used by major companies?

Yes, Microsoft used Surge human evaluations to benchmark MAI-Thinking-1, as reported in July 2026.

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Last reviewed: July 3, 2026