# TankDiary vs Coralytic

The clearest difference is in-app purchases: Coralytic at none against TankDiary's 1. Coralytic also leads on update cadence (daily vs every 4 days). TankDiary's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price and ads there is nothing between them.

Both are free to download. TankDiary sells 1 one-off in-app purchase. Coralytic asks for nothing beyond the download.

TankDiary ships an update every 4 days, Coralytic daily. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | TankDiary | Coralytic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/coralytic-reef-tank-tracker/id6768277786/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 days | **Daily** |
| Monetization | — | Freemium |
| Size | 54 MB | 13 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [kazuki korenori](https://appshunter.io/developer/1884835388) | [Lime Network LLC](https://appshunter.io/developer/1895008969) |

## What reviewers say

### TankDiary

[App page](https://appshunter.io/ios/app/tankdiary/id6762593557)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TankDiary Pro | $5.99 | one-time |


### Coralytic

[App page](https://appshunter.io/ios/app/coralytic-reef-tank-tracker/id6768277786)

This app helps saltwater aquarium hobbyists track water parameters, monitor livestock, and receive AI-driven insights for reef health. It offers features like quick logging, maintenance scheduling, and a comprehensive livestock library, all within a user-friendly interface.

**Highlights:** Track 15 water parameters, Quick Log water parameters, Charts with target ranges, Reef Score™ health metric, Maintenance scheduler, Livestock library, ICP results entry, AI Insights recommendations

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

**In-app purchases:** none


## Frequently asked questions

### Is TankDiary free?

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

### Is Coralytic free?

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

### Do TankDiary or Coralytic have ads?

Neither TankDiary nor Coralytic shows ads.

### Which is updated more often, TankDiary or Coralytic?

TankDiary ships an update every 4 days, and Coralytic daily. Most recently, TankDiary was updated on October 28, 2026 and Coralytic 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.*