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 3.4. AI Note Taker also leads on review sentiment (75% vs 40%) and ratings volume (548 vs 7). 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 3.4. That said, the two scores are not equally well evidenced: AI Note Taker has 548 ratings behind it against 7, 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 September 17, 2026 and September 30, 2026 respectively.
| Parameter | SEMA3 | AI Note Taker |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (7 ratings) | 4.8 (548 ratings) — better |
| Positive reviews | 40.0% of reviews | 75.0% of reviews — better |
| Number of ratings | 7 | 548 — 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
Questions
Is SEMA3 free?
Is AI Note Taker free?
Which has better reviews, SEMA3 or AI Note Taker?
Do SEMA3 or AI Note Taker have ads?
Which is updated more often, SEMA3 or AI Note Taker?
Other comparisons
