> ## Documentation Index > Fetch the complete documentation index at: https://docs.adriel.com/llms.txt > Use this file to discover all available pages before exploring further. # Organic connectors: Delta vs lifetime metrics > How daily snapshots become both cumulative totals and period-over-period deltas, and what to watch for at the edges. This article applies to organic connectors only. The connectors covered are: * **Facebook Page Organic** * **Instagram Organic** * **LinkedIn Organic** * **TikTok Organic** * **X (Twitter) Organic** * **Pinterest Organic** Each one exposes every metric in two variants: **Lifetime** and **Delta**. Picking the right one is the difference between "how big is the audience?" and "how much did the audience grow this week?". ## How the numbers are produced Most social platform APIs only return the latest cumulative total. They do not retain a daily history of follower counts or post likes. To build a usable time series, the connector takes a snapshot of the lifetime value once per day and stores it. Two metric types are derived from those snapshots: * **Lifetime** — the most recent snapshot at the end of the selected date range. * **Delta** — the day-over-day change between consecutive snapshots, summed across the selected range. So if Monday's lifetime followers is 1,000 and Friday's is 1,040, a Monday-Friday widget shows: * Lifetime: 1,040 * Delta: 40 Delta is what most "growth this week" reports want. ## When to use Lifetime * Total audience size or channel health snapshots * Comparing absolute size across pages or profiles * "How big is the audience right now?" Common Lifetime metrics include, for example, **Total Followers**, **Post Likes (Lifetime)**, and **Post Impressions (Lifetime)**. ## When to use Delta * Campaign performance over a defined window * Weekly or monthly growth trends * "How many new followers did the channel gain in May?" Common Delta metrics include, for example, **Follow Count (Delta)**, **Post Likes (Delta)**, and **Post Reach (Delta)**. ## Edge cases worth knowing ### First-day delta is zero for older posts A post that existed before the connector was connected has no prior snapshot to compare against. Its first delta — on the day it first enters the dashboard — is 0. As a result, the sum of deltas for that post across all time will be smaller than its lifetime value. Posts created on or after the connection date get a first delta that matches their first lifetime value. ### Missing snapshots are estimated If a daily snapshot cannot be taken — API downtime, asset disconnection, rate limiting — the connector estimates the missed days by spreading the change between the last available snapshot and the next one evenly across the gap. This keeps trend lines continuous but can mask short outages. ### Deltas can go negative on Meta connectors Meta restates lifetime post performance for up to 48 hours after the fact. When yesterday's snapshot is revised downward, the delta on the affected day shows as negative. Common reasons: * **Spam removal** — bot and banned-user activity is rolled back. * **Performance corrections** — Meta tunes how certain interactions are counted. This is expected and does not indicate a problem with the connector. To smooth out the effect, switch the widget to a weekly or monthly aggregation. ## Troubleshooting Most often caused by pre-existing posts — their first-day delta is 0 even though their lifetime value is non-zero. Other causes: a missing snapshot was estimated across a gap, or Meta restated a value downward. The lifetime value at the period end is always the authoritative "current total." Either a real unfollow event, or a platform restatement (most common on Meta inside the 48-hour revision window). Check the next day's value — restatements usually self-correct. Expected. Lifetime is a single snapshot, and the value only changes if the platform reports a different total in the next daily snapshot. For day-over-day growth, switch the widget to the **Delta** variant. Correct. Deltas can only be computed after two consecutive daily snapshots exist for a post. For posts published before the connection date, the first delta is 0. Posts published on or after the connection date get a first-day delta immediately. Lifetime metrics — **Total Followers**, LinkedIn `lifetimeFollowCount`, Instagram post data — are cached from the data source's creation date onward and cannot be backfilled. If a data source was connected in July, no April–June values exist. Followers is also a lifetime counter: for any period Adriel shows the value on the last day of the range, so it doesn't sum. Organic refresh schedules deliberately run once a day at fixed times (for example, LinkedIn Organic at 09:00 KST) to avoid vendor errors on very recent data, and only the last few days of page data are refreshed per schedule — recent impressions can lag until the next refresh. Organic metrics are cached daily and period totals are sums of daily reach. Summed daily reach is not equivalent to true period reach because one person can be reached across multiple days, so the total appears inflated compared with the vendor's deduplicated period reach. Adriel does not currently provide full-period reach for organic connectors. A monthly-reach feature is planned separately. Related: [Refresh strategies](/data-sources/how-data-works/refresh-strategies) · [Time zones & data freshness](/data-sources/how-data-works/time-zones-and-data-freshness) For the full Lifetime/Delta metric inventory per platform, see the data reference pages: [Facebook Page Organic](/data-sources/a-f/facebook-page-organic/how-to-connect), [Instagram Organic](/data-sources/g-n/instagram-organic/how-to-connect), [LinkedIn Organic](/data-sources/g-n/linkedin-organic/how-to-connect), [TikTok Organic](/data-sources/o-z/tiktok-organic/how-to-connect), [X (Twitter) Organic](/data-sources/o-z/x-twitter-organic/how-to-connect), [Pinterest Organic](/data-sources/o-z/pinterest-organic/how-to-connect).