# Sig Figs Calculator vs AI Note Taker

The clearest difference is rating: AI Note Taker at 4.8 against Sig Figs Calculator's 3.0. AI Note Taker also leads on update cadence (monthly vs every 48 months) and ratings volume (550 vs 2). Sig Figs Calculator's advantage is in-app purchases (none vs 7) and iOS requirement (10.0 vs 15.0). On price and ads there is nothing between them.

Both are free to download. AI Note Taker sells 6 in-app purchases, starting at $5.99 per 7 days. Sig Figs Calculator asks for nothing beyond the download.

AI Note Taker holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: AI Note Taker has 550 ratings behind it against 2, so its average is the more settled of the two.

Sig Figs Calculator ships an update every 48 months, AI Note Taker monthly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Sig Figs Calculator | AI Note Taker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/sig-figs-calculator/id1604141218/reviews) | **[4.8 (550 ratings)](https://appshunter.io/ios/app/ai-note-taker-notesai/id6504924859/reviews)** |
| Number of ratings | 2 | **550** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 48 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 25 MB | 45 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Ahmad Sattar](https://appshunter.io/developer/1458483953) | [Akash Jain](https://appshunter.io/developer/1473155604) |

## What reviewers say

### Sig Figs Calculator

[App page](https://appshunter.io/ios/app/sig-figs-calculator/id1604141218)

This free tool helps students calculate significant figures for numbers, including rounding and scientific notation. It offers a simple interface for quick and efficient mathematical work.

**Highlights:** Calculate significant figures, Round decimal numbers, Convert to E notation, Convert to Scientific Notation, Simple and easy interface, No registration required

**Features:** macOS Compatibility

**In-app purchases:** none


### AI Note Taker

[App page](https://appshunter.io/ios/app/ai-note-taker-notesai/id6504924859)

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.

**Highlights:** Automatic lecture notes generation, Voice to text conversion, Video to text note generation, Automatic meeting minutes, Smart note organization

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NotesAI Weekly | $5.99 | per 7 days |
| NotesAI Weekly | $8.99 | per 7 days |
| NotesAI Monthly | $9.99 | per month |
| NotesAI Yearly | $49.99 | per year |
| NotesAI Yearly | $99.99 | per year |
| NotesAI Lifetime | $49.99 | one-time |

**What reviewers like**

- 🚀 Accurate transcription
- 👍 Helpful for ADHD/neurodivergent users
- 💡 Generates flashcards and quizzes
- 👍 Great customer support
- 👍 Useful for nursing/high school students

**What reviewers complain about**

- 🐛 Transcription errors, especially for complex topics
- 🔒 Difficult to contact support
- 💰 Expensive premium subscription
- 🐛 Fails to upload/open recorded lectures

**Reported bugs**

- Transcription issues with non-English languages
- App not working in background
- Inability to delete/manage recorded lectures

**Requested features**

- Improved transcription of equations and formulas
- More inclusive and detailed summaries
- Automatic detection of important topics
- Better free version with more functionality


## Frequently asked questions

### Is Sig Figs Calculator free?

Sig Figs Calculator is free to download, with no in-app purchases.

### Is AI Note Taker free?

AI Note Taker is free to download, with in-app purchases available.

### Which has better reviews, Sig Figs Calculator or AI Note Taker?

AI Note Taker is rated higher. Sig Figs Calculator averages 3.0 out of 5 from 2 ratings, while AI Note Taker averages 4.8 from 550 ratings.

### Do Sig Figs Calculator or AI Note Taker have ads?

Neither Sig Figs Calculator nor AI Note Taker shows ads.

### Which is updated more often, Sig Figs Calculator or AI Note Taker?

Sig Figs Calculator ships an update every 48 months, and AI Note Taker monthly. Most recently, Sig Figs Calculator was updated on October 24, 2026 and AI Note Taker on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*