Subitem rollups & summaries
for monday.com
Roll up subitem values into normal item columns you can automate — plus extra summaries beyond native rollups.
Why native rollups aren't enough
monday's native rollups create a special "Mirror/Rollup" column. While useful for viewing data, this column type cannot be used in many automations. You can't easily trigger actions based on its value or use it in standard conditions.
How Subitem rollups & summaries fixes this
Our app provides a custom automation recipe that takes subitem column values and writes the result into a normal item column (like a Number or Text column).
Because the result is in a standard column, you can use it in any automation, integration, or dashboard widget that expects standard data. Plus, we offer additional summary methods beyond the basics.
Supported rollups
All rollups occur within a single board. Cross-board rollups are not supported.
| Source (Subitem) | Target (Item) | Supported Methods |
|---|---|---|
| Number | Number | Sum, Average, Min, Max, Count |
| Status | Text / Long Text | List all, Count specific |
| Time Tracking | Number (Seconds) | Sum (Total duration) |
| Date | Date | Earliest, Latest |
| Formula | Number / Text | Limited support (depends on formula type) |
Additional summaries beyond native rollups
- Weighted Averages: Calculate averages based on another column's weight.
- Concatenation: Join text values from subitems into a single summary string.
- Conditional Counts: Count subitems only if they match specific criteria (e.g., Status is "Done").
Automation recipe: how it works
1 {event}
Triggers when a subitem is created, updated, or deleted. This ensures your parent item is always up to date.
2 {subitem column}
The source column in your subitems (e.g., "Cost", "Hours", "Status").
3 {item column}
The target column on the parent item. Must be on the same board. Cross-board rollups are not supported.
4 {method}
The aggregation logic: Sum, Average, Min, Max, Count, or advanced custom summaries.
See Subitem rollups & summaries in action
How to set up Subitem rollups & summaries
Prerequisites
- You have permissions to install apps in your monday.com account.
- Subitems are enabled on the target board.
- You have at least one suitable subitem column to roll up (e.g., a Number column).
Step 1 – Install the app
- Open the monday.com Apps Marketplace.
- Search for "Subitem rollups & summaries".
- Click Install and choose which workspaces to install to.
Step 2 – Add a recipe
2.1 Find the recipe and click Use
Go to your board's Automations center, search for the app's recipe, and click "Use".
2.2 Approve authorization
monday.com will ask you to approve the app's scopes. These are required to read subitems and write to your chosen item column.
2.3 Configure the recipe
Fill in the sentence: "On {event} rollup {subitem column} to {item column} using {method}".
- Event: Choose "when a subitem is created/updated".
- Subitem Column: Select the source column (e.g., "Cost").
- Item Column: Select the target column on the parent item.
- Method: Choose "Sum", "Average", etc.
2.4 Test the recipe
Return to your board, change a value in a subitem, and watch the parent item update automatically!
How to disable or uninstall
Disable the automation
Go to Board Automations, find the recipe, and toggle it OFF. This stops future rollups but keeps the app installed.
Uninstall the app
Go to Apps > Manage Apps and uninstall "Subitem rollups & summaries". Existing data in your columns remains safe.
Pricing
Plans are managed directly via the monday.com marketplace. Start with a free trial.
Free
$0 / month
- Up to 100 rollups / month
- Basic summary methods
- Community support
Pro
$15 / month
- Unlimited rollups
- Advanced summaries (Weighted, etc.)
- Priority support
FAQ
Does this app store my board data outside monday.com?
No, the app operates within the monday.com environment. We process data transiently to perform the calculation and write it back to your board immediately.
Can I use the rolled-up values in other automations?
Yes! This is the main benefit. Since we write to normal item columns (like Numbers), you can use them in any standard monday automation.
Is cross-board rollup supported?
Currently, no. The app supports rolling up subitems to their parent items within the same board only.
What happens to my data if I uninstall the app?
Your data is safe. The values already written to your columns remain there. The app simply stops updating them.