# Geometry Calculator for School vs BioFlash

The clearest difference is price: BioFlash at Free against Geometry Calculator for School's $8.99. Geometry Calculator for School's advantage is in-app purchases (none vs 1). On update cadence, ads, device support and iOS requirement there is nothing between them.

BioFlash is free to download; Geometry Calculator for School costs $8.99 up front. BioFlash sells 1 in-app purchase, starting at $2.99 per year. Geometry Calculator for School asks for nothing beyond the download.

Geometry Calculator for School ships an update every 4 months, BioFlash every 7 months. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Geometry Calculator for School | BioFlash |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 7 months |
| Monetization | Paid | — |
| Size | 122 MB | 44 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Rudolf Halmi](https://appshunter.io/developer/484210280) | [Gentiana Etemi](https://appshunter.io/developer/1883027493) |

## What reviewers say

### Geometry Calculator for School

[App page](https://appshunter.io/ios/app/geometry-calculator-for-school/id6742743672)

This app provides step-by-step solutions and real-time shape previews for geometry problems, including volume, surface area, and perimeter calculations for over 110 shapes. It also features a weight calculator with customizable materials and works offline without ads.

**Highlights:** Step-by-step geometry solutions, Real-time shape previews, Calculations for over 110 geometric shapes, Weight calculator with custom materials, Offline functionality, No advertisements

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

**In-app purchases:** none


### BioFlash

[App page](https://appshunter.io/ios/app/bioflash-glossary/id6760253478)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BioFlash Premium | $2.99 | per year |


## Frequently asked questions

### Is Geometry Calculator for School free?

Geometry Calculator for School costs $8.99, with no in-app purchases.

### Is BioFlash free?

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

### Do Geometry Calculator for School or BioFlash have ads?

Neither Geometry Calculator for School nor BioFlash shows ads.

### Which is updated more often, Geometry Calculator for School or BioFlash?

Geometry Calculator for School ships an update every 4 months, and BioFlash every 7 months. Most recently, Geometry Calculator for School was updated on October 30, 2026 and BioFlash on November 5, 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.*