# Calculation Transformers vs OSINT Toolbox

The clearest difference is price: Calculation Transformers at Free against OSINT Toolbox's $14.99. Calculation Transformers also leads on iOS requirement (13.0 vs 18.0). OSINT Toolbox's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 5 months). On rating, ads and device support there is nothing between them.

Calculation Transformers is free to download; OSINT Toolbox costs $14.99 up front. Calculation Transformers sells 1 one-off in-app purchase. OSINT Toolbox asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Calculation Transformers against 5.0 for OSINT Toolbox. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Calculation Transformers ships an update every 5 months, OSINT Toolbox monthly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Calculation Transformers | OSINT Toolbox |
| --- | --- | --- |
| Price | **Free** | $14.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/calculation-transformers/id6759037556/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/osint-toolbox/id6765688833/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 56 MB | 66 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Nanjibhai Gorasiya](https://appshunter.io/developer/1834066312) | [Marcus Roskosch](https://appshunter.io/developer/334053438) |

## What reviewers say

### Calculation Transformers

[App page](https://appshunter.io/ios/app/calculation-transformers/id6759037556)

This electrical engineering tool simplifies complex transformer calculations for students and professionals. It offers fast, accurate results in an easy-to-understand format, aiding in design, maintenance, and analysis.

**Highlights:** Fast transformer calculations, Clear input structure, Accurate results, Design and troubleshooting aid, User-friendly interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime premium | $9.99 | one-time |


### OSINT Toolbox

[App page](https://appshunter.io/ios/app/osint-toolbox/id6765688833)

This app consolidates open-source intelligence tools into a single, privacy-focused interface for iPhone, iPad, and Mac. It analyzes various data points like domain registrations and IP reputations without requiring accounts or active probing.

**Highlights:** Consolidated intelligence modules, No accounts or data collection, Passive investigation methods, On-device AI for natural language queries, Offline investigation utilities, Privacy-focused design

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Calculation Transformers free?

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

### Is OSINT Toolbox free?

OSINT Toolbox costs $14.99, with no in-app purchases.

### Which has better reviews, Calculation Transformers or OSINT Toolbox?

Calculation Transformers and OSINT Toolbox are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do Calculation Transformers or OSINT Toolbox have ads?

Neither Calculation Transformers nor OSINT Toolbox shows ads.

### Which is updated more often, Calculation Transformers or OSINT Toolbox?

Calculation Transformers ships an update every 5 months, and OSINT Toolbox monthly. Most recently, Calculation Transformers was updated on October 28, 2026 and OSINT Toolbox on October 31, 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.*