# Simalai vs reefAZ

The clearest difference is in-app purchases: Simalai at none against reefAZ's 3. reefAZ's advantage is update cadence (every 9 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. reefAZ sells 3 in-app purchases, starting at $0.99 per month. Simalai asks for nothing beyond the download.

Simalai ships an update every 3 weeks, reefAZ every 9 days. The most recent releases landed on September 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Simalai | reefAZ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 8 MB | 186 MB |
| Requires iOS | **16** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [华 李](https://appshunter.io/developer/872554875) | [Ryan Trung](https://appshunter.io/developer/6801448516) |

## What reviewers say

### Simalai

[App page](https://appshunter.io/ios/app/simalai/id994853061)

This smart dosing pump system allows for precise liquid dispensing from 0.1ml to 999ml. Control dosing volume, frequency, and timing remotely via your mobile phone. Multiple units can be wirelessly combined for expanded functionality.

**Highlights:** Precise dosing from 0.1ml, Compact and small volume design, Mobile phone control for settings, Wireless combination of multiple pumps, Adjustable dosing frequency and time

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

**In-app purchases:** none


### reefAZ

[App page](https://appshunter.io/ios/app/reefaz/id6801448514)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReefAZ Premium | $0.99 | per month |
| ReefAZ Premium | $13.99 | per year |
| ReefAZ Premium | $29.99 | one-time |


## Frequently asked questions

### Is Simalai free?

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

### Is reefAZ free?

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

### Do Simalai or reefAZ have ads?

Neither Simalai nor reefAZ shows ads.

### Which is updated more often, Simalai or reefAZ?

Simalai ships an update every 3 weeks, and reefAZ every 9 days. Most recently, Simalai was updated on September 16, 2026 and reefAZ on October 7, 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.*