# Dynamic Memo vs PenPal AI

The clearest difference is in-app purchases: Dynamic Memo at none against PenPal AI's 10. PenPal AI's advantage is ads (none vs shown) and update cadence (every 3 days vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. PenPal AI sells 10 in-app purchases, starting at $4.99 per 7 days. Dynamic Memo asks for nothing beyond the download.

Dynamic Memo ships an update every 3 weeks, PenPal AI every 3 days. The most recent releases landed on October 15, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Dynamic Memo | PenPal AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/dynamic-memo/id6747792515/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | Ad-supported | — |
| Size | 6 MB | 56 MB |
| Requires iOS | 18.1 | **18** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [MIZOU, CO., LTD.](https://appshunter.io/developer/1542553141) | [HARRISON ROBERT TOWLER](https://appshunter.io/developer/1820292187) |

## What reviewers say

### Dynamic Memo

[App page](https://appshunter.io/ios/app/dynamic-memo/id6747792515)

This app keeps your most crucial notes visible at all times using your iPhone's Dynamic Island. Create, manage, and prioritize memos for persistent display, ensuring important information is always accessible. It offers quick access via widgets and a clean interface for efficient note-taking.

**Highlights:** Pin memos to Dynamic Island, Full memo list management, Memo prioritization, Home screen widget support, Quick memo creation, Clean, modern interface

**Features:** macOS Compatibility

**In-app purchases:** none


### PenPal AI

[App page](https://appshunter.io/ios/app/penpal-ai/id6762025599)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PenPal AI Starter | $4.99 | per 7 days |
| PenPal AI Plus | $9.99 | per 7 days |
| PenPal AI Pro | $14.99 | per 7 days |
| Image Boost Small | $2.99 | one-time |
| 25 Voice Credits | $3.99 | one-time |
| Premium Reply Boost Small | $3.99 | one-time |
| Image Boost Medium | $6.99 | one-time |
| 75 Voice Credits | $8.99 | one-time |
| Premium Reply Boost Medium | $8.99 | one-time |
| 175 Voice Credits | $14.99 | one-time |


## Frequently asked questions

### Is Dynamic Memo free?

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

### Is PenPal AI free?

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

### Do Dynamic Memo or PenPal AI have ads?

Dynamic Memo shows ads; PenPal AI does not.

### Which is updated more often, Dynamic Memo or PenPal AI?

Dynamic Memo ships an update every 3 weeks, and PenPal AI every 3 days. Most recently, Dynamic Memo was updated on October 15, 2026 and PenPal AI on October 20, 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.*