# Concise ISL vs Trinity Open Day

The clearest difference is price: Trinity Open Day at Free against Concise ISL's $1.99. Trinity Open Day also leads on update cadence (every 3 months vs every 25 months). Concise ISL's advantage is iOS requirement (9.0 vs 16.6). On ads, in-app purchases and device support there is nothing between them.

Trinity Open Day is free to download; Concise ISL costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Concise ISL ships an update every 25 months, Trinity Open Day every 3 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Concise ISL | Trinity Open Day |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 25 MB | 60 MB |
| Requires iOS | **9.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Kevin Doherty](https://appshunter.io/developer/1046591870) | [Trinity College Dublin Commercial](https://appshunter.io/developer/1583568942) |

## What reviewers say

### Concise ISL

[App page](https://appshunter.io/ios/app/concise-isl/id1046591871)

Learn Irish Sign Language with a comprehensive video dictionary featuring around 1000 signs. Explore signs by category, search efficiently, and access offline content. Ideal for learners of all ages.

**Highlights:** 1000+ ISL signs in video format, High-quality image support for signs, Categorized sign organization, Efficient search functionality, Offline use after initial download, Child-appropriate content, Information on ISL history and grammar

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

**In-app purchases:** none


### Trinity Open Day

[App page](https://appshunter.io/ios/app/trinity-open-day/id6470378702)

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Concise ISL free?

Concise ISL costs $1.99, with no in-app purchases.

### Is Trinity Open Day free?

Trinity Open Day is free to download, with no in-app purchases.

### Do Concise ISL or Trinity Open Day have ads?

Neither Concise ISL nor Trinity Open Day shows ads.

### Which is updated more often, Concise ISL or Trinity Open Day?

Concise ISL ships an update every 25 months, and Trinity Open Day every 3 months. Most recently, Concise ISL was updated on November 2, 2026 and Trinity Open Day on November 3, 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.*