Tri vs Polar
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Tri
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.
- Instant controls
- 24-hour timer
- Customizable colors
- Sunrise & sunset simulation
- Biotope pre-sets (with controller)
- Storm function (with controller)
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New and improved Tri-Spec 2 App for aquarium lighting. Free App download. Original features include Instant controls, 24 hour timer, colour customisable options, sunrise & sunset features and also support pages that include setup, troubleshooting & customer care support. ย Tri-Spec 1 or 2 LED users with this App will need the Tri-Spec 2 App Controller 2 to access the New Biotope Pre-Sets, Customisable Blue-Moon After Sunset, Storm function & Unique Code Connection. ย This App also works with the original Tri-Spec 1 App Controller and both Tri-spec 1 & 2 LED lighting but to access the new features a new Tri-Spec 2 App controller will need to be used. Contact us for more information if you are a current Tri-Spec 1 App user. ย ย Tri-Spec 2 App Controller 2โs are available from all good aquatic retailers. ย ย Powered by Bluetooth technology. ย For more information, troubleshooting & spares please go to www.interpet.co.uk or email contact customercare@interpet.co.uk. ย Interpet has over 65 years of aquatic experience to ensure every element of the design of this product has been carefully considered to help you enjoy aquarium keeping.
Polar
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The Polar-ESS App uses an API and connects to your Polar-ESS Cloud Monitoring account. The APP provides basic information about your Home Energy Demand, Solar PV Generation, Grid import energy and Battery Usage To view the Privacy Policy and EULA please visit the links provided in the app, or visit https://givenergy.co.uk/website-privacy-policy/ and https://polar-ess.co.uk/terms/ respectively.
Screenshots
Verdict
The clearest difference is in-app purchases: Tri at none against Polar's 1. Tri also leads on iOS requirement (7.0 vs 17.4). On price, update cadence, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Polar sells 1 in-app purchase, starting at $25.00 per year. Tri asks for nothing beyond the download.
Tri ships an update every 2 months, Polar every 5 weeks. The most recent releases landed on October 17, 2026 and September 20, 2026 respectively.
| Parameter | Tri | Polar |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 9.1% of reviews | โ |
| Update frequency | Every 2 months | Every 5 weeks โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Monetization | Free | โ |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 7.0 โ better | 17.4 |
| Further details โ not scored | ||
| Size | 21 MB | 69 MB |
| Age rating | 4+ | 4+ |
| Developer | interpet.co.uk | GivEnergy Software Limited |
In-app purchases
Tri
No in-app purchases
Polar
- Yearly Subscription1 Year trial$25.001 Year








