# BioChemAR vs LLTrainer

The clearest difference is in-app purchases: BioChemAR at none against LLTrainer's 1. BioChemAR also leads on update cadence (fortnightly vs every 3 months) and iOS requirement (18.0 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. LLTrainer sells 1 one-off in-app purchase. BioChemAR asks for nothing beyond the download.

BioChemAR ships an update fortnightly, LLTrainer every 3 months. The most recent releases landed on September 18, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | BioChemAR | LLTrainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Size | 232 MB | 2 MB |
| Requires iOS | **18.0** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Carleton College](https://appshunter.io/developer/1115389489) | [Tatsuya Yamaguchi](https://appshunter.io/developer/447542345) |

## What reviewers say

### BioChemAR

[App page](https://appshunter.io/ios/app/biochemar/id1434332440)

**Features:** macOS Compatibility

**In-app purchases:** none


### LLTrainer

[App page](https://appshunter.io/ios/app/lltrainer/id6760694380)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Full Access | $3.99 | one-time |


## Frequently asked questions

### Is BioChemAR free?

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

### Is LLTrainer free?

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

### Do BioChemAR or LLTrainer have ads?

Neither BioChemAR nor LLTrainer shows ads.

### Which is updated more often, BioChemAR or LLTrainer?

BioChemAR ships an update fortnightly, and LLTrainer every 3 months. Most recently, BioChemAR was updated on September 18, 2026 and LLTrainer on September 22, 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.*