# OpenTutor vs Calculus Solver

The clearest difference is in-app purchases: OpenTutor at none against Calculus Solver's 2. OpenTutor also leads on update cadence (every 9 days vs every 2 months) and iOS requirement (12.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Calculus Solver sells 2 in-app purchases, starting at $5.99 per 7 days. OpenTutor asks for nothing beyond the download.

OpenTutor ships an update every 9 days, Calculus Solver every 2 months. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | OpenTutor | Calculus Solver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (5 ratings)](https://appshunter.io/ios/app/calculus-solver-math-helper/id6738013581/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 months |
| Monetization | — | Subscription |
| Size | 34 MB | 23 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Islam Music](https://appshunter.io/developer/1486093325) | [Renaissance Apps LLC](https://appshunter.io/developer/1220536592) |

## What reviewers say

### OpenTutor

[App page](https://appshunter.io/ios/app/opentutor/id6444727590)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calculus Solver

[App page](https://appshunter.io/ios/app/calculus-solver-math-helper/id6738013581)

Instantly solve calculus problems with AI-powered step-by-step explanations. Upload or photograph your math questions and receive detailed solutions covering derivatives, integrals, and more. A free trial is available before subscribing.

**Highlights:** AI-powered problem solving, Photo recognition for problems, Detailed step-by-step solutions, Covers derivatives and integrals, Copy and share solutions, Free trial available

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculus Answers: Weekly Sub | $5.99 | per 7 days |
| Calculus Answers: Weekly Sub | $34.99 | per year |


## Frequently asked questions

### Is OpenTutor free?

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

### Is Calculus Solver free?

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

### Do OpenTutor or Calculus Solver have ads?

Neither OpenTutor nor Calculus Solver shows ads.

### Which is updated more often, OpenTutor or Calculus Solver?

OpenTutor ships an update every 9 days, and Calculus Solver every 2 months. Most recently, OpenTutor was updated on October 2, 2026 and Calculus Solver on September 30, 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.*