# ProGrain vs Trillion AI

The clearest difference is in-app purchases: ProGrain at none against Trillion AI's 1. ProGrain also leads on iOS requirement (12.4 vs 15). Trillion AI's advantage is update cadence (every 2 weeks vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Trillion AI sells 1 one-off in-app purchase. ProGrain asks for nothing beyond the download.

ProGrain ships an update every 5 weeks, Trillion AI every 2 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ProGrain | Trillion AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Size | 13 MB | 6 MB |
| Requires iOS | **12.4** | 15 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [prograin s.a.](https://appshunter.io/developer/1539004964) | [Chun-Yi Kuo](https://appshunter.io/developer/1070484210) |

## What reviewers say

### ProGrain

[App page](https://appshunter.io/ios/app/prograin/id1539004962)

**Features:** macOS Compatibility

**In-app purchases:** none


### Trillion AI

[App page](https://appshunter.io/ios/app/trillion-ai/id6758277934)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Live AI | $7.99 | one-time |


## Frequently asked questions

### Is ProGrain free?

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

### Is Trillion AI free?

Trillion AI is free to download, with in-app purchases available.

### Do ProGrain or Trillion AI have ads?

Neither ProGrain nor Trillion AI shows ads.

### Which is updated more often, ProGrain or Trillion AI?

ProGrain ships an update every 5 weeks, and Trillion AI every 2 weeks. Most recently, ProGrain was updated on November 7, 2026 and Trillion AI on October 31, 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.*