# Ink vs Estratum

The clearest difference is device support: Ink at 4 against Estratum's 2. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Ink sells 2 in-app purchases, starting at $4.99 per month and Estratum sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Ink ships an update every 5 days, Estratum every 9 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Ink | Estratum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ink-notes-lists-and-to-dos/id6763797883/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 9 days |
| Monetization | Freemium | — |
| Size | 55 MB | 28 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sean Trapani](https://appshunter.io/developer/1886235096) | [LyXeoN](https://appshunter.io/developer/566849105) |

## What reviewers say

### Ink

[App page](https://appshunter.io/ios/app/ink-notes-lists-and-to-dos/id6763797883)

Transform spoken words into organized notes and lists with AI-powered transcription and editing. Features include collaborative sharing, customizable shelving, and multiple daily planning views. Print beautifully formatted documents and track your productivity habits.

**Highlights:** Voice-to-text transcription, AI-powered editing, Collaborative list sharing, Customizable shelves for organization, Multiple daily planning views, Printable notes and lists, Productivity statistics tracking

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ink Monthly | $4.99 | per month |
| Ink Annual | $49.99 | per year |


### Estratum

[App page](https://appshunter.io/ios/app/estratum-second-brain/id6795179990)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Estratum Pro — Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is Ink free?

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

### Is Estratum free?

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

### Do Ink or Estratum have ads?

Neither Ink nor Estratum shows ads.

### Which is updated more often, Ink or Estratum?

Ink ships an update every 5 days, and Estratum every 9 days. Most recently, Ink was updated on October 24, 2026 and Estratum on October 24, 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.*