# TCAD app vs Calculus Solver

The clearest difference is in-app purchases: TCAD app at none against Calculus Solver's 2. TCAD app also leads on update cadence (monthly vs every 11 months) and iOS requirement (12.0 vs 17.6). 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 $4.99 per 7 days. TCAD app asks for nothing beyond the download.

TCAD app ships an update monthly, Calculus Solver every 11 months. The most recent releases landed on October 3, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | TCAD app | Calculus Solver |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 11 months |
| Size | 143 MB | 12 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DEVSIM LLC](https://appshunter.io/developer/1703126059) | [Nicolas Gustavo Melian](https://appshunter.io/developer/1777868675) |

## What reviewers say

### TCAD app

[App page](https://appshunter.io/ios/app/tcad-app/id6462515028)

**In-app purchases:** none


### Calculus Solver

[App page](https://appshunter.io/ios/app/calculus-solver-step-by-step/id6753817856)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $4.99 | per 7 days |
| Yearly Plan | $24.99 | per year |


## Frequently asked questions

### Is TCAD app free?

TCAD app 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 TCAD app or Calculus Solver have ads?

Neither TCAD app nor Calculus Solver shows ads.

### Which is updated more often, TCAD app or Calculus Solver?

TCAD app ships an update monthly, and Calculus Solver every 11 months. Most recently, TCAD app was updated on October 3, 2026 and Calculus Solver on October 6, 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.*