# FastMath vs Expression Solver

The clearest difference is review sentiment: Expression Solver at 100% against FastMath's 17%. Expression Solver also leads on in-app purchases (none vs 5) and iOS requirement (15.0 vs 18.6). FastMath's advantage is update cadence (every 5 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. FastMath sells 5 in-app purchases, starting at $4.99 per 7 days. Expression Solver asks for nothing beyond the download.

FastMath ships an update every 5 days, Expression Solver monthly. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | FastMath | Expression Solver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (51K ratings)](https://appshunter.io/ios/app/fastmath-photo-math-solver/id1438642238/reviews)** | — |
| Number of ratings | **51K** | — |
| Positive reviews | 17.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 5 days** | Monthly |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 73 MB | 47 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dakyuz Yazilim Ticaret Limited Sirketi](https://appshunter.io/developer/1030310836) | [Francesco Varotti](https://appshunter.io/developer/1501752853) |

## What reviewers say

### FastMath

[App page](https://appshunter.io/ios/app/fastmath-photo-math-solver/id1438642238)

Instantly solve math problems by taking a photo, even handwritten ones. Get step-by-step solutions with explanations and graphical representations to improve your understanding and check your homework.

**Highlights:** Photo math problem solver, Handwritten problem support, Step-by-step solutions, Graphical representations, Homework checker, Cloud archive for problems

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pack with Free Trial | $4.99 | per 7 days |
| Subscription Monthly | $9.99 | per month |
| Subscription 3 Months | $19.99 | per 3 months |
| Six Months Subscription | $29.99 | per 6 months |
| Lifetime Pack | $49.99 | one-time |

**What reviewers like**

- 🚀 Helps understand math problems
- 👍 Useful for checking work
- 💡 Solves integrals and multiple equations

**What reviewers complain about**

- 💰 Requires subscription to see solutions
- 🐛 Camera function often doesn't work
- 🐛 Can't solve basic problems
- 🔒 Immediate paywall upon opening app

**Reported bugs**

- Incorrect solutions for simple problems
- App crashes frequently
- Compatibility issues with older devices

**Requested features**

- Provide more explanation for basic problems
- Allow free access to solutions
- Improve camera functionality


### Expression Solver

[App page](https://appshunter.io/ios/app/expression-solver/id1555902561)

This app provides step-by-step solutions for mathematical expressions, helping users improve their math skills. It features a specialized keyboard for easy input of complex numbers and offers practice exercises with detailed explanations.

**Highlights:** Instant expression solving, Step-by-step explanations, Math keyboard for complex input, Practice exercises with solutions, Intuitive interface

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

**In-app purchases:** none


## Frequently asked questions

### Is FastMath free?

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

### Is Expression Solver free?

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

### Do FastMath or Expression Solver have ads?

Both FastMath and Expression Solver show ads.

### Which is updated more often, FastMath or Expression Solver?

FastMath ships an update every 5 days, and Expression Solver monthly. Most recently, FastMath was updated on November 11, 2026 and Expression Solver on November 3, 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.*