# PTI Transformer vs 469 Service Tracker

PTI Transformer and 469 Service Tracker are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PTI Transformer ships an update every 11 months, 469 Service Tracker every 14 months. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | PTI Transformer | 469 Service Tracker |
| --- | --- | --- |
| 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 | No |
| Ads | No | No |
| Update frequency | **Every 11 months** | Every 14 months |
| Monetization | Free | — |
| Size | 3 MB | 17 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Push Interactions, Inc.](https://appshunter.io/developer/357410200) | [casey spitnale](https://appshunter.io/developer/1465149982) |

## 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


### 469 Service Tracker

[App page](https://appshunter.io/ios/app/469-service-tracker/id1592737452)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PTI Transformer free?

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

### Is 469 Service Tracker free?

469 Service Tracker is free to download, with no in-app purchases.

### Do PTI Transformer or 469 Service Tracker have ads?

Neither PTI Transformer nor 469 Service Tracker shows ads.

### Which is updated more often, PTI Transformer or 469 Service Tracker?

PTI Transformer ships an update every 11 months, and 469 Service Tracker every 14 months. Most recently, PTI Transformer was updated on November 1, 2026 and 469 Service Tracker on November 7, 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.*