# WEEK AQUA vs QR Keep

The clearest difference is in-app purchases: WEEK AQUA at none against QR Keep's 1. WEEK AQUA also leads on update cadence (fortnightly vs every 5 weeks) and iOS requirement (13.0 vs 18.5). On price, ads and device support there is nothing between them.

Both are free to download. QR Keep sells 1 one-off in-app purchase. WEEK AQUA asks for nothing beyond the download.

WEEK AQUA ships an update fortnightly, QR Keep every 5 weeks. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | WEEK AQUA | QR Keep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (24 ratings)](https://appshunter.io/ios/app/week-aqua/id1536538648/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 10.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | Free | — |
| Size | 38 MB | 2 MB |
| Requires iOS | **13.0** | 18.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [周 段](https://appshunter.io/developer/1530345249) | [Jacob D Kamile](https://appshunter.io/developer/1299583845) |

## What reviewers say

### WEEK AQUA

[App page](https://appshunter.io/ios/app/week-aqua/id1536538648)

This app provides smart management for aquarium fish tank lights. It uses Bluetooth to wirelessly control various lighting functions, including brightness, spectrum modes, and custom settings. Users can set timers for on/off cycles, simulate sunrise/sunset, and control fans.

**Highlights:** Bluetooth wireless control, Brightness adjustment, Spectrum mode settings, Customizable lighting, Sunrise/sunset simulation, Fan control, Cycling timers

**Features:** macOS Compatibility

**In-app purchases:** none


### QR Keep

[App page](https://appshunter.io/ios/app/qr-keep/id6755141194)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version Unlock | $0.99 | one-time |


## Frequently asked questions

### Is WEEK AQUA free?

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

### Is QR Keep free?

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

### Do WEEK AQUA or QR Keep have ads?

Neither WEEK AQUA nor QR Keep shows ads.

### Which is updated more often, WEEK AQUA or QR Keep?

WEEK AQUA ships an update fortnightly, and QR Keep every 5 weeks. Most recently, WEEK AQUA was updated on November 3, 2026 and QR Keep on November 6, 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.*