Comparison

avvistAPP vs Opocrin Events

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

Head to head
About

avvistAPP

Features
Read full description

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.

About

Opocrin Events

Features
Read full description

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

avvistAPP3 screens
Opocrin Events3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

avvistAPP ships an update every 10 months, Opocrin Events monthly. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 4 level
avvistAPP versus Opocrin Events: the parameters behind the verdict, then further details
ParameteravvistAPPOpocrin Events
PriceFreeFree
Update frequencyEvery 10 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.614.0 — better
Further details — not scored
Size11 MB51 MB
Age rating4+4+
DeveloperDivulgando SrlMumble SRL

In-app purchases

None

avvistAPP

No in-app purchases

None

Opocrin Events

No in-app purchases

Questions

Is avvistAPP free?
avvistAPP is free to download, with no in-app purchases.
Is Opocrin Events free?
Opocrin Events is free to download, with no in-app purchases.
Do avvistAPP or Opocrin Events have ads?
Neither avvistAPP nor Opocrin Events shows ads.
Which is updated more often, avvistAPP or Opocrin Events?
avvistAPP ships an update every 10 months, and Opocrin Events monthly. Most recently, avvistAPP was updated on November 3, 2026 and Opocrin Events on October 28, 2026.

Other comparisons