Industry standard collaborative whiteboarding with massive template libraries, but less streamlined for rapid AI diagram generation.

Prep Edu records 1,414,975 monthly visits with -19.8% month-over-month growth and Paid pricing. Whimsical records 966,895 monthly visits with -18.7% growth and Freemium pricing.

The collaborative whiteboard built for product builders
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | prepedu.com | whimsical.com |
| Pricing Model | Paid | Freemium |
| Monthly Visits | 1.41M (1,414,975) | 966.9K (966,895) |
| MoM Traffic Delta | -349.68K (-19.8%) |
| -222.85K (-18.7%) |
| Primary Market & Share | 🇻🇳 Vietnam (78%) | 🇮🇳 India (19%) |
|---|
| Direct Visits / mo | 479.07K | 602.36K |
|---|
| User Rating | 4.1 | 4.7 |
|---|
| Supported Platforms | Website | Website |
|---|
Study smarter for IELTS, TOEIC and HSK with AI speaking and writing rooms
Rehearse exam-style speaking tasks with AI scoring and multi-layer feedback covering grammar, pronunciation, fluency, vocabulary and how well your ideas are organised.
Submit written answers and receive automated scoring with suggestions on structure, vocabulary range and accuracy to raise your band score.
A companion that answers questions, walks through difficult tasks and keeps learners motivated between lessons.
Structured IELTS, TOEIC and HSK programmes, a PrepTalk English speaking course, entry tests and mock exams that mirror the real format.

The collaborative whiteboard built for product builders
AI Flowcharts, AI Mind Maps and AI Wireframes convert a short text prompt into structured, fully editable diagrams, branched mind maps, or web and mobile wireflows — no manual drawing required.
Boards host diagrams, flowcharts, mind maps, wireframes, embedded media and documents side by side, so a whole product narrative lives in a single shareable file.
Multiple teammates edit the same board simultaneously with live cursors, thread comments attached to specific objects, and mention-based notifications.
Drag-and-drop UI components let teams sketch screens, link them into clickable flows and iterate on product ideas before engineering commits to a build.
Industry standard collaborative whiteboarding with massive template libraries, but less streamlined for rapid AI diagram generation.

Focuses heavily on PTE and IELTS exam practice with robust AI scoring, similar to Prep Edu's test rooms.
SpecialistAI English speaking coach with instant pronunciation feedback
#3
Provides online exam prep and instant AI scoring for PTE and IELTS, but with a simpler course structure.

SpecialistLearn a new language by talking to lifelike AI tutors
Free / Open-sourceCombines mind mapping and project workflows with AI agents, but less focused on pure visual diagramming and wireframes.
Robust collaborative whiteboard with strong AI diagramming tools, but less polished UI wireframing capabilities than Whimsical.
Delivers automated AI scoring for major English proficiency exams, though less focused on structured video lessons than Prep.

SpecialistSpeak a new language from day one with human-like AI and expert human tutors
Offers excellent AI speaking coaching for IELTS, but lacks the comprehensive written course library found in Prep.

Dedicated diagramming platform with strong AI chart generation, but less focus on freeform collaborative brainstorming whiteboards.
SpecialistInstantly turns natural language prompts into mind maps and flowcharts, but offers less freeform canvas drawing flexibility.
Industry standard collaborative whiteboarding with massive template libraries, but less streamlined for rapid AI diagram generation.
Focuses heavily on PTE and IELTS exam practice with robust AI scoring, similar to Prep Edu's test rooms.
Provides online exam prep and instant AI scoring for PTE and IELTS, but with a simpler course structure.
SpecialistLearn a new language by talking to lifelike AI tutors
Robust collaborative whiteboard with strong AI diagramming tools, but less polished UI wireframing capabilities than Whimsical.
Delivers automated AI scoring for major English proficiency exams, though less focused on structured video lessons than Prep.
SpecialistSpeak a new language from day one with human-like AI and expert human tutors
Offers excellent AI speaking coaching for IELTS, but lacks the comprehensive written course library found in Prep.
Dedicated diagramming platform with strong AI chart generation, but less focus on freeform collaborative brainstorming whiteboards.
SpecialistInstantly turns natural language prompts into mind maps and flowcharts, but offers less freeform canvas drawing flexibility.