# Concise ISL vs Dublin Maths

The clearest difference is price: Dublin Maths at Free against Concise ISL's $1.99. Dublin Maths also leads on update cadence (every 10 months vs every 25 months). Concise ISL's advantage is iOS requirement (9.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

Dublin Maths 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, Dublin Maths every 10 months. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Concise ISL | Dublin Maths |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 10 months** |
| Monetization | Paid | — |
| Size | 25 MB | 187 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kevin Doherty](https://appshunter.io/developer/1046591870) | [Dublin Maths](https://appshunter.io/developer/1826270766) |

## 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


### Dublin Maths

[App page](https://appshunter.io/ios/app/dublin-maths/id6736939184)

**In-app purchases:** none


## Frequently asked questions

### Is Concise ISL free?

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

### Is Dublin Maths free?

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

### Do Concise ISL or Dublin Maths have ads?

Neither Concise ISL nor Dublin Maths shows ads.

### Which is updated more often, Concise ISL or Dublin Maths?

Concise ISL ships an update every 25 months, and Dublin Maths every 10 months. Most recently, Concise ISL was updated on November 2, 2026 and Dublin Maths on November 8, 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.*