# Biology AI vs AI Study Notes

The clearest difference is update cadence: AI Study Notes at every 6 weeks against Biology AI's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Biology AI sells 2 in-app purchases, starting at $3.99 per 7 days and AI Study Notes sells 6 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

Biology AI ships an update every 4 months, AI Study Notes every 6 weeks. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Biology AI | AI Study Notes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/biology-ai-homework-and-study/id6755091667/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Monetization | Freemium | — |
| Size | 68 MB | 19 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [AlicSystems](https://appshunter.io/developer/1793437899) | [紫妍 连](https://appshunter.io/developer/1869185039) |

## What reviewers say

### Biology AI

[App page](https://appshunter.io/ios/app/biology-ai-homework-and-study/id6755091667)

This app uses AI to help you master biology. It offers instant solutions to homework problems with step-by-step explanations and generates smart flashcards from your notes for efficient studying and better retention. Get 24/7 tutoring for high school, college, and exam prep.

**Highlights:** AI-powered problem solver, Instant step-by-step explanations, Smart flashcard generator, Camera-based problem scanning, Comprehensive biology topic coverage, 24/7 AI tutoring

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $3.99 | per 7 days |
| Pro Yearly | $29.99 | per year |


### AI Study Notes

[App page](https://appshunter.io/ios/app/ai-study-notes-astralect/id6801450839)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Monthly | $14.99 | per month |
| Pro Monthly | $24.99 | per month |
| Max Monthly | $39.99 | per month |
| Starter Yearly | $119.99 | per year |
| Pro Yearly | $199.99 | per year |
| Max Yearly | $319.99 | per year |


## Frequently asked questions

### Is Biology AI free?

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

### Is AI Study Notes free?

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

### Do Biology AI or AI Study Notes have ads?

Neither Biology AI nor AI Study Notes shows ads.

### Which is updated more often, Biology AI or AI Study Notes?

Biology AI ships an update every 4 months, and AI Study Notes every 6 weeks. Most recently, Biology AI was updated on October 28, 2026 and AI Study Notes on October 29, 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.*