# Hippo AI vs Lemon Notes

The clearest difference is in-app purchases: Hippo AI at none against Lemon Notes's 1. Hippo AI also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Lemon Notes sells 1 in-app purchase, starting at $3.99 per year. Hippo AI asks for nothing beyond the download.

Hippo AI ships an update every 3 weeks, Lemon Notes every 10 days. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Hippo AI | Lemon Notes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Size | 55 MB | 152 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Omnix Turkey Teknoloji Ve Danışmanlık Anonim Şirketi](https://appshunter.io/developer/1703044722) | [NEFISE ZELIHA BAYAR](https://appshunter.io/developer/6806773147) |

## What reviewers say

### Hippo AI

[App page](https://appshunter.io/ios/app/hippo-ai/id6759280631)

**Features:** Vision Pro support

**In-app purchases:** none


### Lemon Notes

[App page](https://appshunter.io/ios/app/lemon-notes-pdf-docs-study/id6806773641)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lemon Notes Unlimited Notes | $3.99 | per year |


## Frequently asked questions

### Is Hippo AI free?

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

### Is Lemon Notes free?

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

### Do Hippo AI or Lemon Notes have ads?

Neither Hippo AI nor Lemon Notes shows ads.

### Which is updated more often, Hippo AI or Lemon Notes?

Hippo AI ships an update every 3 weeks, and Lemon Notes every 10 days. Most recently, Hippo AI was updated on October 28, 2026 and Lemon 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.*