Cortex vs InstantAI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cortex
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Cortex is your private, on-device AI planner for daily work and life. Use Cortex to understand your calendar, spot conflicts, and turn plans into action quickly. Key features: • Calendar-aware dashboard with priority signals • Chat that can summarize your schedule and create events • Smart insights and proactive recommendations • Image-aware chat support • Local-first AI processing for privacy • Notification nudges and quiet hours controls Cortex is built to help you stay focused without sending your planning data to external AI services.
InstantAI
Experience lightning-fast AI responses with this application, offering instant, intelligent answers at speeds up to 3,000 words per second. Analyze documents, perform web searches, and utilize advanced reasoning modes for complex tasks. Enjoy a private and ad-free experience with customizable instructions and conversation history.
- Up to 3,000 words per second response speed
- Web search with real-time sources
- PDF, image, and document analysis
- Math rendering with LaTeX support
- Code highlighting
- Conversation history and bookmarks
- Custom AI instructions
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The fastest AI chat on the planet. InstantAI responds at up to 3,000 words per second. No loading spinners. No waiting. Just instant, intelligent answers. THREE SPEED MODES: - Instant — Lightning-fast answers for everyday questions - Smart — Deeper analysis with thinking capability - Genius — The most powerful reasoning available (Ultra subscribers) FEATURES: - Up to 3,000 words per second response speed - Web search with real-time sources and citations - PDF, image, and document analysis - Math rendering with LaTeX support - Code highlighting with syntax colors and copy - Conversation history and bookmarks - Custom AI instructions — make it yours - Dark mode native design PLUS ($18.99/month): Instant + Smart modes. Up to 300 messages/day. ULTRA ($49.99/month): All modes including Genius. Up to 300 messages/day. Higher usage limits. ULTRA MAX ($99.99/month): All modes including Genius. The highest usage limits available. No ads. No tracking your conversations. Your chats are yours. Terms of use: https://instantai.chat/terms/
Screenshots
Verdict
The clearest difference is in-app purchases: Cortex at none against InstantAI's 10. Cortex also leads on iOS requirement (17.0 vs 26.0). On price, ads and device support 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. InstantAI sells 10 in-app purchases, starting at $5.99 per 7 days. Cortex asks for nothing beyond the download.
| Parameter | Cortex | InstantAI |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.0 (1 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | — | Every 2 days |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 7 MB | 31 MB |
| Age rating | 4+ | 12+ |
| Developer | Pratik Poudel | NORTH TUMBLEWEED LLC |
In-app purchases
Cortex
No in-app purchases
InstantAI
- Plus Weekly3 Days trial$5.997 Days
- Plus Monthly3 Days trial$18.991 Month
- Ultra Weekly$18.997 Days
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- Ultra Max Monthly$29.997 Days
- Ultra Monthly$59.991 Month
- Ultra Max Monthly$99.991 Month
- Plus Yearly3 Days trial$169.991 Year
- Ultra Yearly$449.991 Year
- Ultra Max Yearly$749.991 Year
- 3,500 Bolts$49.99
