# TankLog vs Reef Analysis

TankLog and Reef Analysis are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

TankLog ships an update every 5 days, Reef Analysis every 3 days. The most recent releases landed on September 28, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | TankLog | Reef Analysis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/tanklog-aquascape/id6762062161/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Monetization | Free | — |
| Size | 3 MB | 10 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [John Katez](https://appshunter.io/developer/1279354709) | [Ark Technology Ltd](https://appshunter.io/developer/6781222453) |

## What reviewers say

### TankLog

[App page](https://appshunter.io/ios/app/tanklog-aquascape/id6762062161)

This app helps you meticulously track your aquarium's water chemistry, maintenance, and livestock. It offers detailed logging for water parameters, customizable schedules, and equipment inventory, all while prioritizing user privacy with no data collection.

**Highlights:** Water chemistry tracking, Customizable maintenance schedules, Livestock and plant inventory, Equipment tracker, CO₂ estimation, Privacy-focused, no data collection

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

**In-app purchases:** none


### Reef Analysis

[App page](https://appshunter.io/ios/app/reef-analysis/id6781222451)

**In-app purchases:** none


## Frequently asked questions

### Is TankLog free?

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

### Is Reef Analysis free?

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

### Do TankLog or Reef Analysis have ads?

Neither TankLog nor Reef Analysis shows ads.

### Which is updated more often, TankLog or Reef Analysis?

TankLog ships an update every 5 days, and Reef Analysis every 3 days. Most recently, TankLog was updated on September 28, 2026 and Reef Analysis on September 19, 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.*