# PTI Transformer vs SimaFin

The clearest difference is in-app purchases: PTI Transformer at none against SimaFin's 2. PTI Transformer also leads on iOS requirement (12.0 vs 15.0). SimaFin's advantage is update cadence (every 3 weeks vs every 11 months). On price, ads and device support there is nothing between them.

Both are free to download. SimaFin sells 2 in-app purchases, starting at $6.99 per month. PTI Transformer asks for nothing beyond the download.

PTI Transformer ships an update every 11 months, SimaFin every 3 weeks. Both last shipped on September 29, 2026.

## The numbers

| Metric | PTI Transformer | SimaFin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pti-transformer/id522826739/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 3 MB | 45 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Push Interactions, Inc.](https://appshunter.io/developer/357410200) | [Sima (Canada) Inc](https://appshunter.io/developer/1728091665) |

## What reviewers say

### PTI Transformer

[App page](https://appshunter.io/ios/app/pti-transformer/id522826739)

This app calculates electrical transformer performance metrics like current, voltage, efficiency, and regulation. It also offers SI/Metric conversions for various physical quantities and includes a tool for estimating ship dates based on order time.

**Highlights:** Transformer current, voltage, efficiency, and regulation calculation, SI/Metric unit conversions, Speed, force, power, area, pressure, volume, temperature, weights & measures conversions, Ship date estimation tool, Information about the developer

**Features:** macOS Compatibility

**In-app purchases:** none


### SimaFin

[App page](https://appshunter.io/ios/app/simafin/id6476885580)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $6.99 | per month |
| Team | $17.99 | per month |


## Frequently asked questions

### Is PTI Transformer free?

PTI Transformer is free to download, with no in-app purchases.

### Is SimaFin free?

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

### Do PTI Transformer or SimaFin have ads?

Neither PTI Transformer nor SimaFin shows ads.

### Which is updated more often, PTI Transformer or SimaFin?

PTI Transformer ships an update every 11 months, and SimaFin every 3 weeks. Most recently, PTI Transformer was updated on September 29, 2026 and SimaFin on September 29, 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.*