avvistAPP vs Opocrin Events
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
avvistAPP
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AVVISTAPP is an app designed to track the presence of the sea walnut - an alien species in the northern Adriatic. Although the sea walnut does not sting humans (it is a ctenophore and not a jellyfish), this animal can be considerably problematic for the marine ecosystem: it is a voracious predator that feeds on zooplankton (fish food), eggs and fish larvae. Due to the negative effects that the sea walnut can cause in the locations in which it is found, it has been included in the list of the 100 most harmful invasive species in the world. Since the summer of 2016, the sea walnut has been forming huge swarms (blooms) in the north Adriatic, causing serious problems for the fishing sector in the Grado and Marano lagoons. AVVISTAPP is a tool that will allow everyone to actively contribute to monitoring the sea walnut invasion in the Gulf of Trieste. In order to use to it: recognise the organism, if possible take a photo and then send an alert via your mobile phone. In addition to the sea walnut, with AVVISTAPP, it is also possible to report other very common organisms in our sea, such as jellyfish, turtles and dolphins. The data provided will be collected and analysed by OGS researchers and will be made available to the entire scientific community in order to better understand our sea conditions.
Opocrin Events
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Ecco l'app Opocrin Events, il nuovo strumento per essere sempre aggiornati su tutte le iniziative e gli eventi organizzati da Opocrin. In occasione del 60° anniversario, Opocrin ha deciso di offrire una piattaforma semplice e intuitiva per rendere la comunicazione ancora più efficace. L’app è pensata per semplificare la tua esperienza e assicurarti di non perdere nessuna delle iniziative speciali che celebrano la storia e il futuro dell’azienda. Scarica ora e preparati a vivere da protagonista tutti gli eventi del 60° compleanno e oltre!
Screenshots
Verdict
The clearest difference is update cadence: Opocrin Events at monthly against avvistAPP's every 10 months. Opocrin Events also leads on iOS requirement (14.0 vs 17.6). 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.
avvistAPP ships an update every 10 months, Opocrin Events monthly. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.
| Parameter | avvistAPP | Opocrin Events |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 51 MB |
| Age rating | 4+ | 4+ |
| Developer | Divulgando Srl | Mumble SRL |
In-app purchases
avvistAPP
No in-app purchases
Opocrin Events
No in-app purchases
Questions
Is avvistAPP free?
Is Opocrin Events free?
Do avvistAPP or Opocrin Events have ads?
Which is updated more often, avvistAPP or Opocrin Events?
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