# PrerAp vs Superheat Subcooling PT Chart

The clearest difference is in-app purchases: PrerAp at none against Superheat Subcooling PT Chart's 3. PrerAp also leads on iOS requirement (12.0 vs 16.0). Superheat Subcooling PT Chart's advantage is update cadence (every 2 months vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. Superheat Subcooling PT Chart sells 3 in-app purchases, starting at $2.99 per month. PrerAp asks for nothing beyond the download.

PrerAp ships an update every 5 months, Superheat Subcooling PT Chart every 2 months. The most recent releases landed on October 7, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | PrerAp | Superheat Subcooling PT Chart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/prerap/id1660054792/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 29 MB | 10 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Evolve (RDC)](https://appshunter.io/developer/1567017217) | [HD YAPIMCILIK VE TEKNOLOJI ITHALAT IHRACAT TICARET LIMITED SIRKETI](https://appshunter.io/developer/1871741424) |

## What reviewers say

### PrerAp

[App page](https://appshunter.io/ios/app/prerap/id1660054792)

This app allows voters to securely store their biographical information and generate QR codes. These codes can then be scanned during enrollment to quickly retrieve data, significantly reducing wait times at registration centers.

**Highlights:** Biographical data storage, QR code generation, Reduced registration time, Data retrieval via scanning

**Features:** macOS Compatibility

**In-app purchases:** none


### Superheat Subcooling PT Chart

[App page](https://appshunter.io/ios/app/superheat-subcooling-pt-chart/id6796341083)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Superheat Pro — Monthly | $2.99 | per month |
| Superheat Pro — Yearly | $14.99 | per year |
| Superheat Pro — Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is PrerAp free?

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

### Is Superheat Subcooling PT Chart free?

Superheat Subcooling PT Chart is free to download, with in-app purchases available.

### Do PrerAp or Superheat Subcooling PT Chart have ads?

Neither PrerAp nor Superheat Subcooling PT Chart shows ads.

### Which is updated more often, PrerAp or Superheat Subcooling PT Chart?

PrerAp ships an update every 5 months, and Superheat Subcooling PT Chart every 2 months. Most recently, PrerAp was updated on October 7, 2026 and Superheat Subcooling PT Chart on October 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.*