# EFIG vs Superheat Subcooling PT Chart

The clearest difference is in-app purchases: EFIG at none against Superheat Subcooling PT Chart's 3. EFIG also leads on iOS requirement (12.4 vs 16.0). On price, update cadence, 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. EFIG asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 8, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | EFIG | Superheat Subcooling PT Chart |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 16 MB | 10 MB |
| Requires iOS | **12.4** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Unisource Solutions](https://appshunter.io/developer/1607234455) | [HD YAPIMCILIK VE TEKNOLOJI ITHALAT IHRACAT TICARET LIMITED SIRKETI](https://appshunter.io/developer/1871741424) |

## What reviewers say

### EFIG

[App page](https://appshunter.io/ios/app/efig/id1627222021)

**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 EFIG free?

EFIG 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 EFIG or Superheat Subcooling PT Chart have ads?

Neither EFIG nor Superheat Subcooling PT Chart shows ads.

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

EFIG ships an update every 2 months, and Superheat Subcooling PT Chart every 2 months. Most recently, EFIG was updated on October 8, 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.*