# Scan Math Problems vs SOH CAH TOA

The clearest difference is price: Scan Math Problems at Free against SOH CAH TOA's $0.99. Scan Math Problems also leads on update cadence (every 2 weeks vs every 3 months) and iOS requirement (16.0 vs 18.2). SOH CAH TOA's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support there is nothing between them.

Scan Math Problems is free to download; SOH CAH TOA costs $0.99 up front. Scan Math Problems sells 2 in-app purchases, starting at $4.99 per 7 days. SOH CAH TOA asks for nothing beyond the download.

Scan Math Problems ships an update every 2 weeks, SOH CAH TOA every 3 months. The most recent releases landed on September 26, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Scan Math Problems | SOH CAH TOA |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.3 (18 ratings)](https://appshunter.io/ios/app/scan-math-problems-pi/id6473253670/reviews)** | — |
| Number of ratings | **18** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 8 MB |
| Requires iOS | **16.0** | 18.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Renaissance Apps LLC](https://appshunter.io/developer/1220536592) | [Laurence Stone](https://appshunter.io/developer/1702094763) |

## What reviewers say

### Scan Math Problems

[App page](https://appshunter.io/ios/app/scan-math-problems-pi/id6473253670)

Instantly solve math problems by taking or uploading a photo. Get detailed, step-by-step explanations for a wide range of math topics, from high school to advanced research. Share solutions easily.

**Highlights:** Photo recognition for math problems, Step-by-step solution explanations, Covers high school to doctorate level math, Copy and share detailed solutions, Free trial available

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Math Homework Solver Weekly | $4.99 | per 7 days |
| Math Homework Solver Yearly | $34.99 | per year |


### SOH CAH TOA

[App page](https://appshunter.io/ios/app/soh-cah-toa/id6742157017)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Scan Math Problems free?

Scan Math Problems is free to download, with in-app purchases available.

### Is SOH CAH TOA free?

SOH CAH TOA costs $0.99, with no in-app purchases.

### Do Scan Math Problems or SOH CAH TOA have ads?

Scan Math Problems shows ads; SOH CAH TOA does not.

### Which is updated more often, Scan Math Problems or SOH CAH TOA?

Scan Math Problems ships an update every 2 weeks, and SOH CAH TOA every 3 months. Most recently, Scan Math Problems was updated on September 26, 2026 and SOH CAH TOA on September 29, 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.*