# Hanna Lab vs Reef.Tools

The clearest difference is review sentiment: Hanna Lab at 45% against Reef.Tools's 0%. Hanna Lab also leads on rating (4.0 vs 3.0) and ratings volume (10 vs 2). Reef.Tools's advantage is update cadence (daily vs every 5 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Hanna Lab holds the better App Store score, 4.0 against 3.0. That said, the two scores are not equally well evidenced: Hanna Lab has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 45% of Hanna Lab's written reviews are positive against 0% of Reef.Tools's.

Hanna Lab ships an update every 5 months, Reef.Tools daily. The most recent releases landed on September 25, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Hanna Lab | Reef.Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (10 ratings)](https://appshunter.io/ios/app/hanna-lab/id913755813/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/reeftools/id6739948464/reviews) |
| Number of ratings | **10** | 2 |
| Positive reviews | **45.5% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Daily** |
| Monetization | Free | Free |
| Size | 32 MB | 32 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hanna Instruments, Inc.](https://appshunter.io/developer/913755816) | [Ivena LLC](https://appshunter.io/developer/1787597398) |

## What reviewers say

### Hanna Lab

[App page](https://appshunter.io/ios/app/hanna-lab/id913755813)

Transform your mobile device into a professional-grade pH meter or data management system. Connect with compatible Hanna Instruments probes and meters to conduct precise measurements, store data securely, and access it via the cloud.

**Highlights:** pH meter functionality with Bluetooth probes, Data management with compatible meters, Hanna Cloud compatibility for data sync, Live measurements and trend graphs, Data export in PDF and CSV formats, Calibration and logging features

**Features:** macOS Compatibility

**In-app purchases:** none


### Reef.Tools

[App page](https://appshunter.io/ios/app/reeftools/id6739948464)

This app simplifies reef tank maintenance with science-backed tools. It offers a precision dosing calculator for over 30 elements, customizable schedules, and insights into water chemistry. Compare your tank's parameters to natural ocean values.

**Highlights:** Precision dosing calculator for 30+ elements, Customizable dosing schedules, Reef chemistry insights, Support for multiple brands and custom targets, Comparison to natural ocean parameters

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hanna Lab free?

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

### Is Reef.Tools free?

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

### Which has better reviews, Hanna Lab or Reef.Tools?

Hanna Lab is rated higher. Hanna Lab averages 4.0 out of 5 from 10 ratings, while Reef.Tools averages 3.0 from 2 ratings.

### Do Hanna Lab or Reef.Tools have ads?

Neither Hanna Lab nor Reef.Tools shows ads.

### Which is updated more often, Hanna Lab or Reef.Tools?

Hanna Lab ships an update every 5 months, and Reef.Tools daily. Most recently, Hanna Lab was updated on September 25, 2026 and Reef.Tools on September 30, 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.*