# Calculus Solver vs PFT

The clearest difference is price: Calculus Solver at Free against PFT's $57.00. Calculus Solver also leads on update cadence (every 2 months vs every 12 months). PFT's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 16.0). On ads and device support there is nothing between them.

Calculus Solver is free to download; PFT costs $57.00 up front. Calculus Solver sells 2 in-app purchases, starting at $5.99 per 7 days. PFT asks for nothing beyond the download.

Calculus Solver ships an update every 2 months, PFT every 12 months. The most recent releases landed on September 30, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Calculus Solver | PFT |
| --- | --- | --- |
| Price | **Free** | $57.00 |
| 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | Subscription | — |
| Size | 23 MB | 10 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Renaissance Apps LLC](https://appshunter.io/developer/1220536592) | [RTS Publishing Co Inc](https://appshunter.io/developer/604916069) |

## What reviewers say

### 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 |


### PFT

[App page](https://appshunter.io/ios/app/pft-flash-cards/id6740146380)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculus Solver free?

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

### Is PFT free?

PFT costs $57.00, with no in-app purchases.

### Do Calculus Solver or PFT have ads?

Neither Calculus Solver nor PFT shows ads.

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

Calculus Solver ships an update every 2 months, and PFT every 12 months. Most recently, Calculus Solver was updated on September 30, 2026 and PFT on October 15, 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.*