# Tetragram vs Project Passport

The clearest difference is update cadence: Tetragram at every 5 weeks against Project Passport's every 6 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Tetragram ships an update every 5 weeks, Project Passport every 6 months. The most recent releases landed on July 19, 2026 and December 18, 2025 respectively.

## The numbers

| Metric | Tetragram | Project Passport |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (43 ratings)](https://appshunter.io/ios/app/tetragram/id1492445695/reviews)** | — |
| Number of ratings | **43** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 months |
| Monetization | Free | — |
| Size | 200 MB | 46 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Tetragram](https://appshunter.io/developer/1492445694) | [Project Passport, LLC](https://appshunter.io/developer/1617713571) |

## What reviewers say

### Tetragram

[App page](https://appshunter.io/ios/app/tetragram/id1492445695)

This app helps cannabis users track product usage, delivery methods, and symptom improvement to find optimal experiences. Users can log what works best for their unique needs and share ratings with a community for product discovery. It provides insights into cannabis journeys for personal understanding and health team consultation.

**Highlights:** Log cannabis products and delivery methods, Track symptom improvement and usage trends, Understand strain effects and find similar products, Share ratings with the community, Control privacy of shared information

**Features:** Vision Pro support

**In-app purchases:** none


### Project Passport

[App page](https://appshunter.io/ios/app/project-passport/id1637862899)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tetragram free?

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

### Is Project Passport free?

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

### Do Tetragram or Project Passport have ads?

Neither Tetragram nor Project Passport shows ads.

### Which is updated more often, Tetragram or Project Passport?

Tetragram ships an update every 5 weeks, and Project Passport every 6 months. Most recently, Tetragram was updated on July 19, 2026 and Project Passport on December 18, 2025.

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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.*