# tCheck vs Tetragram

The clearest difference is review sentiment: Tetragram at 75% against tCheck's 25%. Tetragram also leads on rating (4.3 vs 4.0) and ratings volume (43 vs 4). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Tetragram holds the better App Store score, 4.3 against 4.0. That said, the two scores are not equally well evidenced: Tetragram has 43 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 25% of tCheck's written reviews are positive against 75% of Tetragram's.

tCheck ships an update every 2 months, Tetragram every 5 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | tCheck | Tetragram |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/tcheck/id1325740228/reviews) | **[4.3 (43 ratings)](https://appshunter.io/ios/app/tetragram/id1492445695/reviews)** |
| Number of ratings | 4 | **43** |
| Positive reviews | 25.0% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 42 MB | 200 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Engineered Medical Technologies](https://appshunter.io/developer/1325740227) | [Tetragram](https://appshunter.io/developer/1492445694) |

## What reviewers say

### tCheck

[App page](https://appshunter.io/ios/app/tcheck/id1325740228)

This app simplifies potency testing by calculating recipe doses and logging test results. Organize your herbal testing process and track infusions to understand what works best for you.

**Highlights:** Recipe dose calculation, CBV test logging, Review previous results, Organize herbal testing, Track infusion strength

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is tCheck free?

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

### Is Tetragram free?

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

### Which has better reviews, tCheck or Tetragram?

Tetragram is rated higher. tCheck averages 4.0 out of 5 from 4 ratings, while Tetragram averages 4.3 from 43 ratings.

### Do tCheck or Tetragram have ads?

Neither tCheck nor Tetragram shows ads.

### Which is updated more often, tCheck or Tetragram?

tCheck ships an update every 2 months, and Tetragram every 5 weeks. Most recently, tCheck was updated on October 24, 2026 and Tetragram on October 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.*