Memento Database Tutorial ❲2026 Edition❳

Add Entry event script → On Create or Update:

var category = entry.field("Category"); var yearMonth = entry.field("Month/Year"); // pseudo: query Expenses where category = this.category and month/year = this.month/year, sum Amount // (Memento has query API: library.query(...)) Note: Real query requires writing a script that uses app.openLibrary(...) and filters. | Aspect | Limit | |--------|-------| | Max entries per library | ~100k (depends on device) | | Fields per entry | ~200 | | Cloud storage (free) | 50 MB | | Script execution time | <5 seconds | | Linked libraries | Unlimited | memento database tutorial

var title = entry.field("Title"); if (title) entry.setField("Title", title.trim().toUpperCase()); Add Entry event script → On Create or