SpecialistExcels at automatically generating flashcards and practice quizzes from study notes, but lacks freehand drawing features.
Goodnotes records 3,227,341 monthly visits with +10.8% month-over-month growth and Freemium, Free Trial pricing. Perks records 2,835 monthly visits with -38.4% growth and Paid pricing.

Reward-based appointment booking that keeps customers coming back
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | goodnotes.com | perks.lk |
| Pricing Model | Freemium, Free Trial | Paid |
| Monthly Visits | 3.23M (3,227,341) | 2.84K (2,835) |
| MoM Traffic Delta |
| +314.75K (+10.8%) |
| -1.77K (-38.4%) |
| Primary Market & Share | 🇺🇸 United States (33.8%) | 🇧🇷 Brazil (34.7%) |
|---|
| Direct Visits / mo | 1.64M | 1.16K |
|---|
| User Rating | 4.4 | 3.8 |
|---|
| Supported Platforms | Website | Website |
|---|

Handwritten notes, PDF markup, and AI study tools on one canvas
Low-latency ink with palm rejection, cross-out to erase, and handwriting-to-text conversion keeps writing close to pen on paper.
Import contracts, papers, or textbooks and mark them up by hand, with searchable annotations and clean exports.
Search across typed text, handwriting, and sketches, and turn notes into summaries, mind maps, or structured plans.
Work together in shared notebooks, documents, and whiteboards simultaneously, without version conflicts or file ping-pong.

Reward-based appointment booking that keeps customers coming back
Customers search service categories and book a time with their preferred merchant and staff member.
After each visit, users review the service, the employee and the merchant, producing detailed feedback rather than a single star score.
Points earned from reviews can be redeemed against future appointments, creating an ongoing incentive loop.
Customers message merchants directly and follow merchant posts to keep up with offers and news.
SpecialistExcels at automatically generating flashcards and practice quizzes from study notes, but lacks freehand drawing features.

SpecialistTurns course materials into interactive AI study tools, but focuses less on handwritten digital notebooks.
#2
SpecialistStronger online PDF editing and AI chat capabilities, but lacks tablet-optimized handwritten note-taking workflows.
#3SpecialistConverts notes and PDFs into quizzes and flashcards, but lacks stylus-based handwriting and sketching tools.


Free / Open-sourceAI calendar that defends your focus time and schedules work automatically
Provides gorgeous structured block-based document editing, but is built for typed text rather than handwritten notes.

Organizes notes into interconnected typed objects rather than traditional notebooks, but lacks handwritten ink support.

The AI operating system that answers every dealership call, books the appointment, and protects CSI in real time.
SpecialistUses an infinite visual canvas for note organization, but lacks Goodnotes' paper templates and PDF annotation polish.

Offers spatial whiteboards for organizing complex research, but lacks Goodnotes' freehand handwriting stylus support.

Write, schedule, automate and analyse your X growth in one place

Free / Open-sourceA mobile-first booking system you can run entirely from your phone.
SpecialistExcels at automatically generating flashcards and practice quizzes from study notes, but lacks freehand drawing features.
SpecialistTurns course materials into interactive AI study tools, but focuses less on handwritten digital notebooks.
SpecialistStronger online PDF editing and AI chat capabilities, but lacks tablet-optimized handwritten note-taking workflows.
SpecialistConverts notes and PDFs into quizzes and flashcards, but lacks stylus-based handwriting and sketching tools.
Free / Open-sourceAI calendar that defends your focus time and schedules work automatically
Provides gorgeous structured block-based document editing, but is built for typed text rather than handwritten notes.
Organizes notes into interconnected typed objects rather than traditional notebooks, but lacks handwritten ink support.
The AI operating system that answers every dealership call, books the appointment, and protects CSI in real time.
SpecialistUses an infinite visual canvas for note organization, but lacks Goodnotes' paper templates and PDF annotation polish.
Offers spatial whiteboards for organizing complex research, but lacks Goodnotes' freehand handwriting stylus support.
Write, schedule, automate and analyse your X growth in one place
Free / Open-sourceA mobile-first booking system you can run entirely from your phone.