SignLexicon vs Tiresia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SignLexicon
This app offers a comparative dictionary between Italian Sign Language (LIS) and American Sign Language (ASL). It features side-by-side video comparisons of signs and alphabetic search in Italian or English, serving as a valuable educational tool for language learners.
- LIS and ASL sign comparison
- Side-by-side video playback
- Alphabetic search (Italian/English)
- Extensive sign entry database
- Educational teaching aid
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SignLexicon is a comparative dictionary between Italian Sign Language (LIS) and American Sign Language (ASL). It has been developed as a teaching aid within the LILS project to experiment Italy's first bachelor's degree for Sign Language International Mediators. The project has been co-funded by the Italian Ministry for Universities and it is led by a partnership of the University of Parma (project leader), OSSMED Ets (coordinator) and SSML San Domenico University College in Fermo (executor). SignLexicon 1.0 includes around 3,200 entries: 800 LIS signs and their written Italian equivalent, and 800 ASL signs with their written English equivalent. This freeware is available on the main operating systems for smartphones and tablets. The users can either watch one sign language video at a time or both simultaneously by using both windows side by side. This will help them immediately notice the differences between LIS and ASL. They can also choose to use an alphabetic search in Italian or English. SignLexicon 1.0 will be followed by an updated and expanded version in the near future.
Tiresia
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Tiresia è un'app per la didattica accessibile, pensata per studenti ciechi e ipovedenti. Permette di esplorare figure tattili digitali su smartphone e tablet, sfruttando le vibrazioni, i suoni e la sintesi vocale. È possibile esplorare forme geometriche, curve di funzione, mappe di edifici e mappe concettuali. Lo studente può caricare le figure dal proprio dispositivo o cercarle dal catalogo di Tiresia direttamente dall'app. È possibile creare una nuova figura dal software gratuito Tiresia Disegno, disponibile sul sito ufficiale. https://www.tiresia.app
Screenshots
Verdict
The clearest difference is update cadence: SignLexicon at every 3 months against Tiresia's every 7 months. SignLexicon also leads on iOS requirement (8.0 vs 13). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SignLexicon ships an update every 3 months, Tiresia every 7 months. Both last shipped on October 7, 2026.
| Parameter | SignLexicon | Tiresia |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 8.0 — better | 13 |
| Further details — not scored | ||
| Size | 48 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Ubisive S.r.l. | chia lab s.r.l. |
In-app purchases
SignLexicon
No in-app purchases
Tiresia
No in-app purchases
