# NULL Memo vs Chat

The clearest difference is in-app purchases: Chat at none against NULL Memo's 1. NULL Memo's advantage is update cadence (daily vs every 5 days) and iOS requirement (16.6 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. NULL Memo sells 1 one-off in-app purchase. Chat asks for nothing beyond the download.

NULL Memo ships an update daily, Chat every 5 days. The most recent releases landed on October 17, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | NULL Memo | Chat |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Every 5 days |
| Monetization | — | Free |
| Size | 60 MB | 9 MB |
| Requires iOS | **16.6** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Aaron Chan](https://appshunter.io/developer/1888707957) | [App Palette LLC](https://appshunter.io/developer/711326934) |

## What reviewers say

### NULL Memo

[App page](https://appshunter.io/ios/app/null-memo-ideas-notes-lists/id6761292505)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NULL Memo Pro | $2.99 | one-time |


### Chat

[App page](https://appshunter.io/ios/app/chat-style-to-do-list-chatdo/id6778351976)

This app transforms task management into a conversational experience. Simply send yourself messages to capture tasks, then swipe to prioritize your day. Unfinished items automatically roll over, ensuring nothing is forgotten.

**Highlights:** Chat-style task entry, Swipe to select daily tasks, Automatic carryover of unfinished tasks, Multiple lists for organization, Due dates and reminders, Subtasks

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is NULL Memo free?

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

### Is Chat free?

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

### Do NULL Memo or Chat have ads?

Neither NULL Memo nor Chat shows ads.

### Which is updated more often, NULL Memo or Chat?

NULL Memo ships an update daily, and Chat every 5 days. Most recently, NULL Memo was updated on October 17, 2026 and Chat on October 23, 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.*