# Tri vs CAN

The clearest difference is iOS requirement: Tri at 7.0 against CAN's 18.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 1, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Tri | CAN |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 9.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Size | 21 MB | 9 MB |
| Requires iOS | **7.0** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [interpet.co.uk](https://appshunter.io/developer/1226255981) | [Konstantinos Zoupalis](https://appshunter.io/developer/1873943793) |

## What reviewers say

### Tri

[App page](https://appshunter.io/ios/app/tri-spec-2/id1459336568)

Control your aquarium lighting with customizable settings. Schedule sunrise and sunset effects, adjust colors, and access support resources. Requires a specific controller for advanced features.

**Highlights:** Instant controls, 24-hour timer, Customizable colors, Sunrise & sunset simulation, Biotope pre-sets (with controller), Storm function (with controller)

**Features:** macOS Compatibility

**In-app purchases:** none


### CAN

[App page](https://appshunter.io/ios/app/can-phantom/id6758613494)

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

**In-app purchases:** none


## Frequently asked questions

### Is Tri free?

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

### Is CAN free?

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

### Do Tri or CAN have ads?

Neither Tri nor CAN shows ads.

### Which is updated more often, Tri or CAN?

Tri ships an update every 2 months, and CAN every 2 months. Most recently, Tri was updated on October 1, 2026 and CAN on September 16, 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.*