# Omisli.si vs Aquarium Harmony

The clearest difference is in-app purchases: Omisli.si at none against Aquarium Harmony's 3. Omisli.si also leads on ads (none vs shown) and iOS requirement (12.0 vs 18.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Aquarium Harmony sells 3 in-app purchases, starting at $4.99 per month. Omisli.si asks for nothing beyond the download.

Omisli.si ships an update fortnightly, Aquarium Harmony every 3 weeks. The most recent releases landed on November 11, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Omisli.si | Aquarium Harmony |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Size | 35 MB | 16 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [Omisli.si](https://appshunter.io/developer/1446252150) | [Georgiy Gorokhov](https://appshunter.io/developer/1806278466) |

## What reviewers say

### Omisli.si

[App page](https://appshunter.io/ios/app/omislisi/id1446252151)

**Features:** macOS Compatibility

**In-app purchases:** none


### Aquarium Harmony

[App page](https://appshunter.io/ios/app/aquarium-harmony-care-log/id6790428231)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium — Monthly | $4.99 | per month |
| Premium — Annual | $19.99 | per year |
| Premium — Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Omisli.si free?

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

### Is Aquarium Harmony free?

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

### Do Omisli.si or Aquarium Harmony have ads?

Aquarium Harmony shows ads; Omisli.si does not.

### Which is updated more often, Omisli.si or Aquarium Harmony?

Omisli.si ships an update fortnightly, and Aquarium Harmony every 3 weeks. Most recently, Omisli.si was updated on November 11, 2026 and Aquarium Harmony 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.*