# Probability Toolkit vs Percentage Solver

The clearest difference is device support: Percentage Solver at 3 against Probability Toolkit's 1. Percentage Solver also leads on price ($0.99 vs $1.99). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.

Probability Toolkit costs $1.99 and Percentage Solver $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Probability Toolkit ships an update every 10 months, Percentage Solver every 9 months. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Probability Toolkit | Percentage Solver |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | — | **[4.1 (38 ratings)](https://appshunter.io/ios/app/percentage-solver/id1046389553/reviews)** |
| Number of ratings | — | **38** |
| Positive reviews | — | 80.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 9 months** |
| Monetization | — | Paid |
| Size | 41 MB | 5 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Francesco Grassi](https://appshunter.io/developer/741665024) |

## What reviewers say

### Probability Toolkit

[App page](https://appshunter.io/ios/app/probability-toolkit/id652216774)

**Features:** macOS Compatibility

**In-app purchases:** none


### Percentage Solver

[App page](https://appshunter.io/ios/app/percentage-solver/id1046389553)

This app helps solve any percentage-related problem with complete calculation breakdowns. It's designed for students to understand how solutions are reached and allows sharing of detailed steps. Easily calculate parts, totals, percentage changes, and more.

**Highlights:** Calculate percentage parts, Calculate percentage changes, Shows complete calculation steps, Input two values, get the third, Share detailed solutions, User-friendly interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Probability Toolkit free?

Probability Toolkit costs $1.99, with no in-app purchases.

### Is Percentage Solver free?

Percentage Solver costs $0.99, with no in-app purchases.

### Do Probability Toolkit or Percentage Solver have ads?

Neither Probability Toolkit nor Percentage Solver shows ads.

### Which is updated more often, Probability Toolkit or Percentage Solver?

Probability Toolkit ships an update every 10 months, and Percentage Solver every 9 months. Most recently, Probability Toolkit was updated on October 2, 2026 and Percentage Solver on October 10, 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.*