Tattis

Forage with insight.

Free · In-App Purchases · Designed for iPad. Not verified for macOS.

Tattis is a forecast app made for mushroom foragers that shows where and when mushrooms are likely to grow. The app combines forest type, soil, terrain and up-to-date weather into a species-specific mushroom map covering all of Finland. Map shows where they grow - Species-specific heat map based on the combined effect of growing location and weather - Daily updated forecast – the harvest follows the Finnish Meteorological Institute's weather data - Forest type layers on top: grove, herb-rich heath, mesic heath, sub-xeric heath, xeric heath, barren heath - Works offline in the forest – maps are stored on your phone, no signal required Notifications when harvest time arrives - Push notification when a species' harvest begins or improves - Choose yourself which species you want to hear about - You won't miss the best days when conditions align Personal mushroom journal - Save your own finding spots on the map as private - If you wish, share your observation to the Finnish Biodiversity Information Facility (laji.fi) with one tap - Browse your past trips and locations Comprehensive species selection - Tattis knows 32 species – all edible mushrooms recommended by the Finnish Food Authority plus other edible specialties Reliable sources - Species descriptions: Luontoportti and Arktiset Aromit - Occurrence data: Finnish Biodiversity Information Facility's open data (laji.fi) - Weather data: Finnish Meteorological Institute - Terrain and soil data: National Land Survey of Finland, Geological Survey of Finland, Natural Resources Institute Finland Privacy first - Tattis doesn't track you. Your own mushroom spots are saved only on your phone, unless you decide to share them to laji.fi. Basic use of the app doesn't require signing in. Remember: never eat a mushroom you're not sure about identifying. Tattis helps you find them, not identify them. Terms of Use: https://tattis.life/en/terms/ Privacy Policy: https://tattis.life/en/privacy/

Ratings & Reviews

  • 5.0
    out of 5
    4 Ratings

Hotfix: Fixed heatmap loading race issue. The heatmap now loads reliably when the app is reopened.

Version 1.4.1

The developer, Jarmo Seppala, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Purchases
    • Location
    • Contact Info
    • User Content

Privacy practices may vary based, for example, on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Size
  • 93.8 MB
Category
  • Navigation
Compatibility
Requires iOS 13.0 or later.
  • iPhone
    Requires iOS 13.0 or later.
  • iPad
    Requires iPadOS 13.0 or later.
  • iPod touch
    Requires iOS 13.0 or later.
  • Mac
    Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
13+
In-App Purchases
Yes
  • Tattis Pro – Yearly 12,99 €
  • Tattis Pro – Monthly 3,99 €
  • Tattis Pro - For Life 69,99 €
  • Learn More
Provider
Lait On Oy
  • Lait On Oy has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
  • DUNS Number
    369302816
  • Address
    Neilikkatie 8B 43
    01300 VANTAA
    Finland
  • Phone Number
    +358 451245245
  • Email
    support@laiton.ai
Copyright
  • © 2026 Lait On Oy
  • Developer Website
  • Privacy Policy
  • Licence Agreement

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