# Aquarist's Notes vs TankPulse

The clearest difference is update cadence: Aquarist's Notes at every 6 days against TankPulse's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Aquarist's Notes sells 2 in-app purchases, starting at $1.99 per month and TankPulse sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Aquarist's Notes ships an update every 6 days, TankPulse monthly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Aquarist's Notes | TankPulse |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Monthly |
| Size | 16 MB | 35 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ludek Slouf](https://appshunter.io/developer/1664390856) | [TZU HSUN LIN](https://appshunter.io/developer/6787814422) |

## What reviewers say

### Aquarist's Notes

[App page](https://appshunter.io/ios/app/aquarists-notes/id6451252680)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $1.99 | per month |
| Annual subscription | $9.99 | per year |


### TankPulse

[App page](https://appshunter.io/ios/app/tankpulse-reef-tank-tracker/id6787981670)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Equipment Management | $2.99 | one-time |
| Multiple Tanks | $4.99 | one-time |
| ReefFlow Pro | $9.99 | one-time |


## Frequently asked questions

### Is Aquarist's Notes free?

Aquarist's Notes is free to download, with in-app purchases available.

### Is TankPulse free?

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

### Do Aquarist's Notes or TankPulse have ads?

Neither Aquarist's Notes nor TankPulse shows ads.

### Which is updated more often, Aquarist's Notes or TankPulse?

Aquarist's Notes ships an update every 6 days, and TankPulse monthly. Most recently, Aquarist's Notes was updated on October 30, 2026 and TankPulse on October 31, 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.*