# Flyback Transformer Designer vs PVE

The clearest difference is in-app purchases: PVE at none against Flyback Transformer Designer's 1. PVE also leads on update cadence (every 9 days vs every 2 months). Flyback Transformer Designer's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. Flyback Transformer Designer sells 1 in-app purchase, starting at $29.99 per year. PVE asks for nothing beyond the download.

Flyback Transformer Designer ships an update every 2 months, PVE every 9 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Flyback Transformer Designer | PVE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flyback-transformer-designer/id6771727431/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 10 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [建忠 徐](https://appshunter.io/developer/1871049057) | [Jan Hendrik Ellermann](https://appshunter.io/developer/6792108448) |

## What reviewers say

### Flyback Transformer Designer

[App page](https://appshunter.io/ios/app/flyback-transformer-designer/id6771727431)

Design flyback transformers with detailed calculations for core, gap, turns, and wire gauge. Supports multiple operating modes and secondary outputs, with local computation and exportable reports. Offers a trial period followed by a one-time purchase.

**Highlights:** Complete transformer design calculations, Supports DCM, BCM, QR, and CCM modes, Multi-output secondary winding design, Core, gap, turns, and wire gauge iteration, Built-in ferrite core library, Exportable PDF and JSON reports, Local computation, no internet required

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual subscription | $29.99 | per year |


### PVE

[App page](https://appshunter.io/ios/app/pve-manager/id6792108446)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Flyback Transformer Designer free?

Flyback Transformer Designer is free to download, with in-app purchases available.

### Is PVE free?

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

### Do Flyback Transformer Designer or PVE have ads?

Neither Flyback Transformer Designer nor PVE shows ads.

### Which is updated more often, Flyback Transformer Designer or PVE?

Flyback Transformer Designer ships an update every 2 months, and PVE every 9 days. Most recently, Flyback Transformer Designer was updated on October 31, 2026 and PVE on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*