# Tri vs Aqua Docs

The clearest difference is review sentiment: Aqua Docs at 100% against Tri's 9%. Aqua Docs also leads on update cadence (every 3 weeks vs every 2 months). Tri's advantage is iOS requirement (7.0 vs 15.1). 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.

Tri ships an update every 2 months, Aqua Docs every 3 weeks. The most recent releases landed on June 1, 2026 and August 4, 2026 respectively.

## The numbers

| Metric | Tri | Aqua Docs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (8 ratings)](https://appshunter.io/ios/app/aqua-docs/id6746091301/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | 9.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 21 MB | 90 MB |
| Requires iOS | **7.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [interpet.co.uk](https://appshunter.io/developer/1226255981) | [Octoro Limited](https://appshunter.io/developer/1636631583) |

## 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


### Aqua Docs

[App page](https://appshunter.io/ios/app/aqua-docs/id6746091301)

Manage your aquarium with this free platform. Track parameters, dosages, and livestock, and engage with a community of fellow enthusiasts. Earn rewards for contributions and share your experience.

**Highlights:** Tank Management, Parameter Tracking, Dosage Tracking, Live Stock Profiles, Community Database, User Rewards

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tri free?

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

### Is Aqua Docs free?

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

### Do Tri or Aqua Docs have ads?

Neither Tri nor Aqua Docs shows ads.

### Which is updated more often, Tri or Aqua Docs?

Tri ships an update every 2 months, and Aqua Docs every 3 weeks. Most recently, Tri was updated on June 1, 2026 and Aqua Docs on August 4, 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.*