# SAT1600 vs MathNotes

The clearest difference is in-app purchases: SAT1600 at none against MathNotes's 1. SAT1600 also leads on ads (none vs shown) and iOS requirement (9.0 vs 13.0). MathNotes's advantage is device support (4 vs 1). On price and update cadence there is nothing between them.

Both are free to download. MathNotes sells 1 one-off in-app purchase. SAT1600 asks for nothing beyond the download.

SAT1600 ships an update every 3 weeks, MathNotes every 2 weeks. The most recent releases landed on September 5, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | SAT1600 | MathNotes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mathnotes-math-and-3d-graphs/id6761740403/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 17 MB | 340 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Saida Education Consulting Co., Ltd.](https://appshunter.io/developer/1067545861) | [Vladislav Alikov](https://appshunter.io/developer/1603123547) |

## What reviewers say

### SAT1600

[App page](https://appshunter.io/ios/app/sat1600/id1395861326)

**Features:** macOS Compatibility

**In-app purchases:** none


### MathNotes

[App page](https://appshunter.io/ios/app/mathnotes-math-and-3d-graphs/id6761740403)

This app provides an infinite digital canvas for studying and visualizing mathematics. It allows users to create 2D and 3D graphs, take notes with LaTeX formatting, and convert handwritten equations into editable LaTeX using OCR. Ideal for students and professionals needing a comprehensive math workspace.

**Highlights:** Infinite digital canvas, 2D and 3D graph plotting, Formula OCR to LaTeX, LaTeX equation rendering, Interactive animated sliders, Note organization with media

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support the App and remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is SAT1600 free?

SAT1600 is free to download, with no in-app purchases.

### Is MathNotes free?

MathNotes is free to download, with in-app purchases available.

### Do SAT1600 or MathNotes have ads?

MathNotes shows ads; SAT1600 does not.

### Which is updated more often, SAT1600 or MathNotes?

SAT1600 ships an update every 3 weeks, and MathNotes every 2 weeks. Most recently, SAT1600 was updated on September 5, 2026 and MathNotes on September 24, 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.*