# Grammar Express Question Tag vs Math Problem Solver AI

The clearest difference is rating: Math Problem Solver AI at 5.0 against Grammar Express Question Tag's 3.5. Math Problem Solver AI also leads on update cadence (every 2 weeks vs every 4 months). Grammar Express Question Tag's advantage is monetization model (free vs free with in-app purchases) and device support (3 vs 1). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Grammar Express Question Tag sells 1 one-off in-app purchase and Math Problem Solver AI sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Math Problem Solver AI holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Grammar Express Question Tag ships an update every 4 months, Math Problem Solver AI every 2 weeks. The most recent releases landed on September 22, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Grammar Express Question Tag | Math Problem Solver AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (2 ratings)](https://appshunter.io/ios/app/grammar-express-question-tag/id370144113/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/math-problem-solver-ai-solvr/id6761726051/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 19 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Webrich Software Limited](https://appshunter.io/developer/290203591) | [Yuri Milosh](https://appshunter.io/developer/1690168529) |

## What reviewers say

### Grammar Express Question Tag

[App page](https://appshunter.io/ios/app/grammar-express-question-tag/id370144113)

Master the art of using question tags in everyday conversations with this comprehensive grammar course. It offers detailed lessons, numerous examples, and interactive quizzes with real-time feedback to improve your understanding and response times.

**Highlights:** 13+ pages of grammar lessons and rules, Over 69 examples, 500+ multiple-choice questions, Detailed test results with explanations, Retry missed questions module, Customizable timer settings, Randomized questions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Grammar Express QT Full Version | $0.99 | one-time |


### Math Problem Solver AI

[App page](https://appshunter.io/ios/app/math-problem-solver-ai-solvr/id6761726051)

Instantly solve any math problem with AI. Snap a photo or type your question to get clear, step-by-step explanations. Learn the 'why' behind the answer, not just the solution.

**Highlights:** Instant AI-powered math problem solving, Photo-to-solution functionality, Step-by-step explanations, Interactive tutor-like follow-up questions, Solution history saving, Covers algebra, geometry, calculus, statistics, and more

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SOLVR Premium Weekly | $3.99 | per 7 days |
| SOLVR Premium Monthly | $9.99 | per month |
| SOLVR Premium Yearly | $24.99 | per year |
| SOLVR Premium Yearly | $49.99 | per year |


## Frequently asked questions

### Is Grammar Express Question Tag free?

Grammar Express Question Tag is free to download, with in-app purchases available.

### Is Math Problem Solver AI free?

Math Problem Solver AI is free to download, with in-app purchases available.

### Which has better reviews, Grammar Express Question Tag or Math Problem Solver AI?

Math Problem Solver AI is rated higher. Grammar Express Question Tag averages 3.5 out of 5 from 2 ratings, while Math Problem Solver AI averages 5.0 from 1 ratings.

### Do Grammar Express Question Tag or Math Problem Solver AI have ads?

Neither Grammar Express Question Tag nor Math Problem Solver AI shows ads.

### Which is updated more often, Grammar Express Question Tag or Math Problem Solver AI?

Grammar Express Question Tag ships an update every 4 months, and Math Problem Solver AI every 2 weeks. Most recently, Grammar Express Question Tag was updated on September 22, 2026 and Math Problem Solver AI on October 2, 2026.

---

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