# Yale Access vs GTP API Gravity Calculator2

The clearest difference is review sentiment: GTP API Gravity Calculator2 at 100% against Yale Access's 41%. GTP API Gravity Calculator2 also leads on ads (none vs shown) and iOS requirement (12.0 vs 17.6.1). Yale Access's advantage is price (Free vs $9.99) and rating (4.9 vs 4.0). On in-app purchases and device support there is nothing between them.

Yale Access 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.

Yale Access holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: Yale Access has 75K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 41% of Yale Access's written reviews are positive against 100% of GTP API Gravity Calculator2's, so the app with the better star average is not the one people write more warmly about.

Yale Access ships an update fortnightly, GTP API Gravity Calculator2 every 2 months. The most recent releases landed on October 17, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Yale Access | GTP API Gravity Calculator2 |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.9 (75K ratings)](https://appshunter.io/ios/app/yale-access/id1450980221/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/gtp-api-gravity-calculator2/id6742924006/reviews) |
| Number of ratings | **75K** | 1 |
| Positive reviews | 41.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 305 MB | 9 MB |
| Requires iOS | 17.6.1 | **12.0** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [August Home, Inc.](https://appshunter.io/developer/648730595) | [Gammon Technical Products](https://appshunter.io/developer/1163782116) |

## What reviewers say

### Yale Access

[App page](https://appshunter.io/ios/app/yale-access/id1450980221)

Control and secure your home with smart lock technology. Manage access for family and guests, receive activity alerts, and enjoy peace of mind knowing your property is protected. This app is compatible with specific Yale and August smart lock models in the US and Canada.

**Highlights:** Smart lock control, Home security management, Access for family and guests, Activity alerts, Peace of mind, Compatible with Yale and August locks

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Convenient keyless entry
- 🔒 Secure lock with fingerprint scanner
- 👍 Easy to set up and use
- 👍 Great for short-term rentals
- 👍 Responsive and reliable

**What reviewers complain about**

- 🐛 App crashes and bugs
- 🔋 No battery level indicator
- 🔒 Cannot remove self as guest on others' locks
- 👎 Unreliable auto-lock/unlock feature
- 👎 Poor customer support

**Reported bugs**

- App shows incorrect lock status
- Issues with adding/deleting users
- Connectivity problems between lock and app
- Firmware updates causing functionality issues
- Incompatibility with certain devices/networks

**Requested features**

- Add battery level indicator
- Allow users to remove themselves as guests
- Improve auto-lock/unlock functionality
- Provide better integration with smart home platforms
- Enhance app UI and UX


### GTP API Gravity Calculator2

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

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 Yale Access free?

Yale Access 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, Yale Access or GTP API Gravity Calculator2?

Yale Access is rated higher. Yale Access averages 4.9 out of 5 from 75K ratings, while GTP API Gravity Calculator2 averages 4.0 from 1 ratings.

### Do Yale Access or GTP API Gravity Calculator2 have ads?

Yale Access shows ads; GTP API Gravity Calculator2 does not.

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

Yale Access ships an update fortnightly, and GTP API Gravity Calculator2 every 2 months. Most recently, Yale Access was updated on October 17, 2026 and GTP API Gravity Calculator2 on September 24, 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.*