# Grain Grading vs J

The clearest difference is update cadence: Grain Grading at daily against J's every 3 weeks. Grain Grading also leads on iOS requirement (11.0 vs 14.0). 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.

Grain Grading ships an update daily, J every 3 weeks. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Grain Grading | J |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 3 weeks |
| Size | 179 MB | 43 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Super GeoAI Technology Inc](https://appshunter.io/developer/1699258454) | [Grain Discovery Corp](https://appshunter.io/developer/1502289585) |

## What reviewers say

### Grain Grading

[App page](https://appshunter.io/ios/app/grain-grading/id6453293800)

**Features:** macOS Compatibility

**In-app purchases:** none


### J

[App page](https://appshunter.io/ios/app/j-mas/id6739811575)

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

**In-app purchases:** none


## Frequently asked questions

### Is Grain Grading free?

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

### Is J free?

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

### Do Grain Grading or J have ads?

Neither Grain Grading nor J shows ads.

### Which is updated more often, Grain Grading or J?

Grain Grading ships an update daily, and J every 3 weeks. Most recently, Grain Grading was updated on October 12, 2026 and J on October 7, 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.*