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Crocodile Sandwich is a mobile app developer website currently focused on “90 days in Schengen planner,” a travel planning app for calculating the Schengen Area short-stay 90-days-in-any-180-days rolling rule. The text also mentions an upcoming “Schengen and UK days planner,” to be tested via iOS TestFlight, which will add UK tax-year day-count planning on top of the Schengen calculator.
Based on the captured content, this is not an AI app or large language model tool, but a rule-based calculation app. Its core capabilities include recording past and planned Schengen trips, calculating the number of days used within any 180-day window, showing when previous trips “expire,” and indicating how many days remain after each planned trip. The app supports adjusting trip lengths, adding or inserting trips in any order, and provides a scrollable 180-day calendar view to help users understand the rolling window. The Android version can switch between the scrollable calendar and manual date entry, while the iOS version uses date wheels.
The text does not disclose pricing, subscriptions, one-time purchase options, or any free tier. The new “Schengen and UK days planner” has not been officially released yet and is planned for testing via iOS TestFlight; interested users can contact the developer to join.
Its strength is that the use case is very clear: it solves the problem of manually calculating the Schengen 90/180-day rule, which is complex and error-prone. The developer also states that the app has been rigorously tested and pays attention to calculation accuracy across time zones. The visual 180-day calendar is especially useful for long-term, multi-leg travel planning.
The limitations are also obvious: the website does not show any AI capabilities, API integrations, Chinese-language support, or detailed in-app data privacy information. It can only serve as a calculator; it cannot determine which visa rules apply to a user, nor can it replace official EU information, border control decisions, or tax authority rulings.
It is suitable for travelers entering the Schengen Area visa-free or on multiple-entry short-stay visas who need to plan multiple European trips. It may also suit non-UK residents who will need to manage the number of days they spend in the UK in the future. The text does not provide enough information about access from China; app store availability and direct connectivity are unknown.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on crocodilesandwichapps.com official site.
crocodilesandwichapps.com is an Unknown Travel provider. TG4G tracks its product information, an overall rating of 4.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach crocodilesandwichapps.com directly.