# Homework Helper vs Subtractor

The clearest difference is in-app purchases: Subtractor at none against Homework Helper's 2. Subtractor also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.0). Homework Helper's advantage is update cadence (daily vs every 8 days). On price and ads there is nothing between them.

Both are free to download. Homework Helper sells 2 in-app purchases, starting at $5.99 per month. Subtractor asks for nothing beyond the download.

Homework Helper ships an update daily, Subtractor every 8 days. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Homework Helper | Subtractor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/homework-helper-learn-math/id6738921674/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Every 8 days |
| Monetization | Free with in-app purchases | — |
| Size | 42 MB | 0 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Lumos apps](https://appshunter.io/developer/1535604225) | [David Kelen](https://appshunter.io/developer/1796712157) |

## What reviewers say

### Homework Helper

[App page](https://appshunter.io/ios/app/homework-helper-learn-math/id6738921674)

This AI-powered math solver helps students tackle problems from algebra to calculus. Snap a photo of any math question to get instant solutions with clear, step-by-step explanations tailored to your learning level.

**Highlights:** AI-powered math problem solver, Photo-to-solution functionality, Step-by-step explanation breakdowns, Algebra calculator, Personalized learning explanations, Progress tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $5.99 | per month |
| Yearly | $29.99 | per year |


### Subtractor

[App page](https://appshunter.io/ios/app/subtractor-by-mather/id6742201502)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Homework Helper free?

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

### Is Subtractor free?

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

### Do Homework Helper or Subtractor have ads?

Neither Homework Helper nor Subtractor shows ads.

### Which is updated more often, Homework Helper or Subtractor?

Homework Helper ships an update daily, and Subtractor every 8 days. Most recently, Homework Helper was updated on October 6, 2026 and Subtractor on October 14, 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.*