# Reef Diary Aquarium Management vs KHG

The clearest difference is in-app purchases: KHG at none against Reef Diary Aquarium Management's 4. KHG also leads on update cadence (every 2 weeks vs monthly). Reef Diary Aquarium Management's advantage is device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Reef Diary Aquarium Management sells 4 in-app purchases, starting at $2.99 per month. KHG asks for nothing beyond the download.

Reef Diary Aquarium Management ships an update monthly, KHG every 2 weeks. The most recent releases landed on October 4, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Reef Diary Aquarium Management | KHG |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/reef-diary-aquarium-management/id6746352304/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Freemium | — |
| Size | 58 MB | 3 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christian Buchholz](https://appshunter.io/developer/1816370032) | [Hua Sen Cheng](https://appshunter.io/developer/1895616663) |

## What reviewers say

### Reef Diary Aquarium Management

[App page](https://appshunter.io/ios/app/reef-diary-aquarium-management/id6746352304)

Manage your reef or freshwater aquarium with this comprehensive tool. Track water parameters, schedule maintenance, and monitor your aquatic life and equipment. Works offline to keep your ecosystem healthy and thriving.

**Highlights:** Smart parameter tracking for reef and freshwater, Visual trend charts for water parameters, Multiple tank support, Equipment and livestock inventory, Maintenance task scheduler with reminders, Offline functionality

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reef Diary - Monthly | $2.99 | per month |
| Reef Diary - Yearly | $24.99 | per year |
| Enterprise Monthly Subscription | $89.99 | per month |
| ReefDiary Yearly Enterprise | $699.00 | per year |


### KHG

[App page](https://appshunter.io/ios/app/khg/id6764055087)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Reef Diary Aquarium Management free?

Reef Diary Aquarium Management is free to download, with in-app purchases available.

### Is KHG free?

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

### Do Reef Diary Aquarium Management or KHG have ads?

Neither Reef Diary Aquarium Management nor KHG shows ads.

### Which is updated more often, Reef Diary Aquarium Management or KHG?

Reef Diary Aquarium Management ships an update monthly, and KHG every 2 weeks. Most recently, Reef Diary Aquarium Management was updated on October 4, 2026 and KHG on October 25, 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.*