# Doc Black Ink vs Aquarium Notebook

The clearest difference is in-app purchases: Doc Black Ink at none against Aquarium Notebook's 1. Doc Black Ink also leads on ads (none vs shown) and iOS requirement (11.0 vs 16.6). Aquarium Notebook's advantage is update cadence (weekly vs every 2 months). On price and device support there is nothing between them.

Both are free to download. Aquarium Notebook sells 1 one-off in-app purchase. Doc Black Ink asks for nothing beyond the download.

Doc Black Ink ships an update every 2 months, Aquarium Notebook weekly. The most recent releases landed on November 4, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Doc Black Ink | Aquarium Notebook |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | — |
| Size | 240 MB | 28 MB |
| Requires iOS | **11.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Doc Black Ink Ltd](https://appshunter.io/developer/1722403196) | [HALIL UYDURAN](https://appshunter.io/developer/6797798817) |

## What reviewers say

### Doc Black Ink

[App page](https://appshunter.io/ios/app/doc-black-ink/id6474721638)

Discover tattoo services, book appointments with artists, and explore customizable options. Purchase gift cards and merchandise, and securely submit payment details.

**Highlights:** Browse tattoo service menus, Book permanent makeup or tattoos, View business hours and contact info, Purchase packages and gift cards, Secure payment submission

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Aquarium Notebook

[App page](https://appshunter.io/ios/app/aquarium-notebook-breeding/id6797798455)

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

**In-app purchases (1)**

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


## Frequently asked questions

### Is Doc Black Ink free?

Doc Black Ink is free to download, with no in-app purchases.

### Is Aquarium Notebook free?

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

### Do Doc Black Ink or Aquarium Notebook have ads?

Aquarium Notebook shows ads; Doc Black Ink does not.

### Which is updated more often, Doc Black Ink or Aquarium Notebook?

Doc Black Ink ships an update every 2 months, and Aquarium Notebook weekly. Most recently, Doc Black Ink was updated on November 4, 2026 and Aquarium Notebook on November 10, 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.*