# AC Infinity vs Aquarist's Notes

The clearest difference is in-app purchases: AC Infinity at none against Aquarist's Notes's 2. AC Infinity also leads on iOS requirement (13.0 vs 16.4). Aquarist's Notes's advantage is update cadence (every 6 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Aquarist's Notes sells 2 in-app purchases, starting at $1.99 per month. AC Infinity asks for nothing beyond the download.

AC Infinity ships an update monthly, Aquarist's Notes every 6 days. The most recent releases landed on September 27, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | AC Infinity | Aquarist's Notes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (842 ratings)](https://appshunter.io/ios/app/ac-infinity/id1481751004/reviews)** | — |
| Number of ratings | **842** | — |
| Positive reviews | 79.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Monetization | Free | — |
| Size | 377 MB | 16 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [AC Infinity](https://appshunter.io/developer/1481751003) | [Ludek Slouf](https://appshunter.io/developer/1664390856) |

## What reviewers say

### AC Infinity

[App page](https://appshunter.io/ios/app/ac-infinity/id1481751004)

Control and monitor your HVAC or grow environment with intelligent ventilation. Access advanced programming, view real-time environmental data, and receive customizable alerts for optimal control.

**Highlights:** Wireless programming controls, Scheduled fan automation, Customizable alarms and notifications, Real-time temperature and humidity data, Environmental data visualization, History logs and data export

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

**In-app purchases:** none

**What reviewers like**

- 👍 Convenient and easy to use
- 🚀 Powerful automation and control
- 💡 Excellent app functionality
- 🔍 Detailed monitoring and data tracking
- 🤖 Impressive AI-powered features

**What reviewers complain about**

- 🐛 Connectivity issues after updates
- ⚠️ Unstable settings changes
- 🕰️ Slow app performance
- 🤔 Confusing user interface
- 🔌 Bluetooth-only connectivity limitations

**Reported bugs**

- App crashes after firmware updates
- Devices randomly disconnecting from app
- Incorrect data reporting on the app
- Automation settings being reset unexpectedly

**Requested features**

- Add Wi-Fi connectivity for remote control
- Improve data visualization and graphing
- Implement more advanced automation options
- Allow custom fan speed and light intensity control
- Add support for day/night mode settings


### Aquarist's Notes

[App page](https://appshunter.io/ios/app/aquarists-notes/id6451252680)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $1.99 | per month |
| Annual subscription | $9.99 | per year |


## Frequently asked questions

### Is AC Infinity free?

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

### Is Aquarist's Notes free?

Aquarist's Notes is free to download, with in-app purchases available.

### Do AC Infinity or Aquarist's Notes have ads?

Neither AC Infinity nor Aquarist's Notes shows ads.

### Which is updated more often, AC Infinity or Aquarist's Notes?

AC Infinity ships an update monthly, and Aquarist's Notes every 6 days. Most recently, AC Infinity was updated on September 27, 2026 and Aquarist's Notes on September 11, 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.*