Comparison

Concise ISL vs Trinity Open Day

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Concise ISL

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
Read full description

Concise ISL is an Irish Sign Language (ISL) video dictionary which contains approximately 1000 signs. This mobile app was developed by two young Irish engineers, one of whom is a life-long practitioner of Irish Sign Language, in response to the need for digital resources to support sign language learning in Ireland. Our aim is to provide a comprehensive ISL dictionary system in an easy-to-use form. --------------- Features --------------- Each sign contained within Concise ISL is presented in video form and accompanied by high quality images of the component signs for each hand. All signs can be sorted by category, an organisational approach chosen to support learning. Specific words and categories can be easily found within Concise ISL, using a simple and efficient search interface, swipe gestures, sliding menus and other intuitive interaction mechanisms. This app is designed to be child-appropriate, with the inclusion of a large number of signs in categories such as Animals, Colours, Food, Sports and many others. Through the inclusion of signs such as "texting", "tablet", "facebook" and many more, this ISL dictionary reflects the modern context of the language. Concise ISL currently includes approximately 1000 signs, a figure which we have continuously strived to increase. Concise ISL supports offline use. A data connection is required to download signs for the first time. These videos are then stored on-device for subsequent viewing offline. This approach allows the inclusion of such a large number of signs without imposing the consumption of a significant amount of on-device memory on all users. The video size has been carefully calculated to reduce bandwidth consumption. Concise ISL also includes a number of additional sections containing information concerning the history of ISL, the grammatical structure of the language and more. We hope you enjoy using Concise ISL! Kevin & MicheΓ‘l

About

Trinity Open Day

Features
Read full description

The Trinity Open Day app holds all of the information for you to get the most out of your day on campus. Use our schedule to plan your day and find key locations via our maps.

Screenshots

Concise ISL4 screens
Trinity Open Day3 screens

Verdict

The call

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.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences Β· 5 level
Concise ISL versus Trinity Open Day: the parameters behind the verdict, then further details
ParameterConcise ISLTrinity Open Day
Price$1.99Free β€” better
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 25 monthsEvery 3 months β€” better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidβ€”
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS9.0 β€” better16.6
Further details β€” not scored
Size25 MB60 MB
Age rating4+17+
DeveloperKevin DohertyTrinity College Dublin Commercial

In-app purchases

None

Concise ISL

No in-app purchases

None

Trinity Open Day

No in-app purchases

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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