SEMA3 vs AI Note Taker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SEMA3
Design and conduct smartphone-based survey research with this comprehensive software suite. It offers tools for creating and deploying ecological momentary assessments directly on mobile devices.
- Design survey research
- Conduct smartphone surveys
- Ecological momentary assessment
- Mobile survey deployment
- Research software suite
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SEMA (Smartphone Ecological Momentary Assessment) is a suite of software for designing and conducting smartphone-based survey research For more information, please visit https://sema3.com/
AI Note Taker
This app leverages AI to streamline note-taking for lectures, meetings, and general voice recordings. It converts audio and video into text, automatically generating notes and meeting minutes for efficient information capture and organization.
- Automatic lecture notes generation
- Voice to text conversion
- Video to text note generation
- Automatic meeting minutes
- Smart note organization
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Transform the way you capture and organize information with NotesAI! Our smart, easy-to-use app uses cutting-edge AI to help you create notes effortlessly. Key Features: - Lecture Notes: Record lectures and automatically generate notes - Voice to Text: Convert your voice recordings into accurate text notes instantly - Video to Text: Easily add video links and get instant notes - Meetings Notes: Easily generate meeting minutes Whether you're a student, professional, or an everyday organizer, NotesAI is designed to make your life easier. Download now and experience the future of note-taking! Terms of Use: https://notesai.app/terms Privacy Policy: https://notesai.app/privacy
Screenshots
Verdict
The clearest difference is rating: AI Note Taker at 4.8 against SEMA3's 3.1. AI Note Taker also leads on review sentiment (75% vs 40%) and ratings volume (551 vs 8). SEMA3's advantage is in-app purchases (none vs 7). On price, ads and iOS requirement 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. AI Note Taker sells 6 in-app purchases, starting at $5.99 per 7 days. SEMA3 asks for nothing beyond the download.
AI Note Taker holds the better App Store score, 4.8 against 3.1. That said, the two scores are not equally well evidenced: AI Note Taker has 551 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 40% of SEMA3's written reviews are positive against 75% of AI Note Taker's.
SEMA3 ships an update every 2 months, AI Note Taker monthly. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.
| Parameter | SEMA3 | AI Note Taker |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (8 ratings) | 4.8 (551 ratings) — better |
| Positive reviews | 40.0% of reviews | 75.4% of reviews — better |
| Number of ratings | 8 | 551 — better |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 38 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Richard Sinnott | Akash Jain |
Customer experience
SEMA3
AI Note Taker
Bugs and requests
SEMA3
Not enough reviews yet to summarise bugs or requests.
AI Note Taker
Reported bugs
3 issues- Transcription issues with non-English languages
- App not working in background
- Inability to delete/manage recorded lectures
Requested features
4 requests- Improved transcription of equations and formulas
- More inclusive and detailed summaries
- Automatic detection of important topics
- Better free version with more functionality
In-app purchases
SEMA3
No in-app purchases
AI Note Taker
- NotesAI Weekly$5.997 Days
- NotesAI Weekly$8.997 Days
- NotesAI Monthly$9.991 Month
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- NotesAI Yearly$49.991 Year
- NotesAI Yearly7 Days trial2 variants$99.991 Year
- NotesAI Lifetime$49.99
