# Meshtastic vs GTP API Gravity Calculator2

Meshtastic and GTP API Gravity Calculator2 both sit at 4.1 stars, but that hides the real split: 100% of GTP API Gravity Calculator2's written reviews are positive against 44% of Meshtastic's. GTP API Gravity Calculator2 also leads on iOS requirement (12.0 vs 17.5). Meshtastic's advantage is price (Free vs $9.99) and update cadence (every 10 days vs every 2 months). On rating, ads and in-app purchases there is nothing between them.

Meshtastic 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.

On the App Store both sit at effectively the same score — 4.1 for Meshtastic against 4.0 for GTP API Gravity Calculator2. That said, the two scores are not equally well evidenced: Meshtastic has 824 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 44% of Meshtastic's written reviews are positive against 100% of GTP API Gravity Calculator2's.

Meshtastic ships an update every 10 days, GTP API Gravity Calculator2 every 2 months. The most recent releases landed on October 14, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Meshtastic | GTP API Gravity Calculator2 |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.1 (824 ratings)](https://appshunter.io/ios/app/meshtastic/id1586432531/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/gtp-api-gravity-calculator2/id6742924006/reviews) |
| Number of ratings | **824** | 1 |
| Positive reviews | 44.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | **Free** | Paid |
| Size | 95 MB | 9 MB |
| Requires iOS | 17.5 | **12.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Meshtastic LLC](https://appshunter.io/developer/1586432533) | [Gammon Technical Products](https://appshunter.io/developer/1163782116) |

## What reviewers say

### Meshtastic

[App page](https://appshunter.io/ios/app/meshtastic/id1586432531)

This app enables off-grid, decentralized communication via a low-power mesh network. Send text messages in areas lacking cellular or WiFi service.

**Highlights:** Off-grid communication, Decentralized mesh network, Low-power LoRa radio support, Text messaging, No cellular/WiFi required

**Features:** Siri integration, Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Well-made app
- 🚀 Polished and intuitive interface
- 🚀 Powerful features for off-grid communication
- 👍 Great community and responsive developers
- 👍 Continuously improving with updates

**What reviewers complain about**

- 🐛 Bluetooth connectivity issues
- 🐛 Unreliable messaging and node connections
- 🐛 Crashes and stability problems
- 🔋 High battery consumption
- 👎 Lacking feature parity with Android version

**Reported bugs**

- Canned messages configuration issues
- Location sharing and traceroute functions not working
- Settings screen bugs and crashes
- Inconsistent behavior when switching between devices

**Requested features**

- Offline maps support
- Ability to customize notifications
- More sorting and filtering options for nodes
- Apple Watch and Shortcuts integration
- Improved documentation and user guidance


### 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 Meshtastic free?

Meshtastic 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, Meshtastic or GTP API Gravity Calculator2?

Meshtastic is rated higher. Meshtastic averages 4.1 out of 5 from 824 ratings, while GTP API Gravity Calculator2 averages 4.0 from 1 ratings.

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

Neither Meshtastic nor GTP API Gravity Calculator2 shows ads.

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

Meshtastic ships an update every 10 days, and GTP API Gravity Calculator2 every 2 months. Most recently, Meshtastic was updated on October 14, 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.*