# Pintrac vs GTP API Gravity Calculator2

The clearest difference is review sentiment: GTP API Gravity Calculator2 at 100% against Pintrac's 0%. GTP API Gravity Calculator2 also leads on rating (4.0 vs 3.1) and chart position (#193 vs unranked). Pintrac's advantage is price (Free vs $9.99) and update cadence (every 2 weeks vs every 2 months). On ads, in-app purchases and device support there is nothing between them.

Pintrac is free to download; GTP API Gravity Calculator2 costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GTP API Gravity Calculator2 holds the better App Store score, 4.0 against 3.1. That said, the two scores are not equally well evidenced: Pintrac has 15 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Pintrac's written reviews are positive against 100% of GTP API Gravity Calculator2's.

Pintrac ships an update every 2 weeks, GTP API Gravity Calculator2 every 2 months. The most recent releases landed on July 5, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Pintrac | GTP API Gravity Calculator2 |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | [3.1 (15 ratings)](https://appshunter.io/ios/app/pintrac/id1396154457/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/gtp-api-gravity-calculator2/id6742924006/reviews)** |
| Number of ratings | **15** | 1 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#193** |
| Size | 79 MB | 9 MB |
| Requires iOS | **10.3** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Franklin Wireless Corp.](https://appshunter.io/developer/1396154456) | [Gammon Technical Products](https://appshunter.io/developer/1163782116) |

## What reviewers say

### Pintrac

[App page](https://appshunter.io/ios/app/pintrac/id1396154457)

This app provides a tracking service for family members and pets, offering peace of mind through location monitoring and health activity reports. It aims to ensure everyone is cared for and protected, allowing users to feel safe and free to explore.

**Highlights:** Family tracking, Pet tracking, Location monitoring, Health activity reports, Safety and protection features

**Features:** macOS Compatibility

**In-app purchases:** none


### GTP API Gravity Calculator2

[App page](https://appshunter.io/ios/app/gtp-api-gravity-calculator2/id6742924006)

**Currently charting:** #193 Top Paid · Utilities (US App Store)

This application calculates the corrected API gravity at 60°F for jet, gasoline, and diesel fuels. It also determines the total weight of the fuel. It's a digital replacement for physical slide calculators.

**Highlights:** Corrected API gravity calculation, Total fuel weight calculation, Supports jet, gasoline, and diesel fuels, Digital version of slide calculators, Developed in 2025

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

**In-app purchases:** none


## Frequently asked questions

### Is Pintrac free?

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

### Is GTP API Gravity Calculator2 free?

GTP API Gravity Calculator2 costs $9.99, with no in-app purchases.

### Which has better reviews, Pintrac or GTP API Gravity Calculator2?

GTP API Gravity Calculator2 is rated higher. Pintrac averages 3.1 out of 5 from 15 ratings, while GTP API Gravity Calculator2 averages 4.0 from 1 ratings.

### Do Pintrac or GTP API Gravity Calculator2 have ads?

Neither Pintrac nor GTP API Gravity Calculator2 shows ads.

### Which is updated more often, Pintrac or GTP API Gravity Calculator2?

Pintrac ships an update every 2 weeks, and GTP API Gravity Calculator2 every 2 months. Most recently, Pintrac was updated on July 5, 2026 and GTP API Gravity Calculator2 on September 8, 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.*