
SpecialistShare and access study materials worldwide — with AI study tools built in
SpecialistShare and access study materials worldwide — with AI study tools built in
Gizmo records 9,273,984 monthly visits with +18.2% month-over-month growth and Freemium pricing. Thinkstack.ai records 917 monthly visits with -47.4% growth and Freemium pricing.

Build custom AI chatbots and agents trained on your own data
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | gizmo.ai | app.thinkstack.ai |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 9.27M (9,273,984) | 917 (917) |
| MoM Traffic Delta | +1.42M (+18.2%) | -828 (-47.4%) |
| Primary Market & Share | 🇵🇭 Philippines (31.3%) | 🇺🇸 United States (48.2%) |
| Direct Visits / mo | 5.7M | 367 |
| User Rating | 4.3 | 4.1 |
| Supported Platforms | Website | Website |
AI flashcards that turn note dumps and PDFs into addictive quiz sessions
Turn notes, PDFs, PowerPoint slides and YouTube videos into ready-to-quiz flashcards without writing cards by hand.
Automatic scheduling resurfaces cards right before you would forget them, so review time goes where it is needed.
Answer-first quizzing with instant feedback instead of passive re-reading, reinforcing long-term retention.
Streaks, points and social study sessions keep motivation high and make daily review a habit.

Build custom AI chatbots and agents trained on your own data
Create fully functional AI agents in seconds from a visual, no-code interface without engineering help.
Connect multiple data sources so the bot answers from your own documents, help content, and websites.
Automate customer actions and build autonomous systems that require minimal human oversight.
Move complex chats to live agents and collect structured data through chat-based forms.

SpecialistShare and access study materials worldwide — with AI study tools built in
SpecialistShare and access study materials worldwide — with AI study tools built in
Offers robust flashcard creation and practice tests, but with a stronger focus on free study tools.
Offers robust flashcard creation and practice tests, but with a stronger focus on free study tools.

Provides comprehensive AI tutoring and course material conversion, but features a more structured video-explainer interface.
Provides comprehensive AI tutoring and course material conversion, but features a more structured video-explainer interface.

Converts course materials into flashcards and mind maps, though its interface emphasizes visual conceptual learning over gamification.
Converts course materials into flashcards and mind maps, though its interface emphasizes visual conceptual learning over gamification.

SpecialistTurn any material into visual study sets, flashcards and quizzes
SpecialistTurn any material into visual study sets, flashcards and quizzes

Excels at summarizing extensive lecture notes and videos into study guides, though its flashcard gamification is simpler.
Excels at summarizing extensive lecture notes and videos into study guides, though its flashcard gamification is simpler.

AI customer service that answers instantly and turns chats into revenue
AI customer service that answers instantly and turns chats into revenue
Transforms various notes and videos into structured summaries and quizzes, offering a clean, straightforward study experience.
Transforms various notes and videos into structured summaries and quizzes, offering a clean, straightforward study experience.

Custom AI agents trained on your documentation and knowledge base
Custom AI agents trained on your documentation and knowledge base
Specializes in converting study files directly into Anki-compatible decks, ideal for dedicated spaced-repetition users.
Specializes in converting study files directly into Anki-compatible decks, ideal for dedicated spaced-repetition users.

Free AI study partner that turns your course material into practice questions, guides and flashcards
Free AI study partner that turns your course material into practice questions, guides and flashcards

Great for generating diverse quiz formats and flashcards from documents, but lacks Gizmo's gamified study sessions.
Great for generating diverse quiz formats and flashcards from documents, but lacks Gizmo's gamified study sessions.