Comparing Periods — Performance Over Time
Last updated: April 18, 2026
Understanding how your campaigns perform over time is essential for making smart scaling and budget decisions. Wevion lets you compare different date ranges to spot trends, measure the impact of changes, and catch performance shifts before they become problems.
Prerequisites
- At least one Meta ad account connected with historical data.
- Familiarity with the Dashboard and Ads Manager.
Dashboard Overview — Your Daily Command Center
How It Works
Wevion stores daily performance data for every campaign, ad set, and ad synced from Meta. By selecting different date ranges, you can compare your current performance against historical periods to identify trends and measure progress.
The date range selector is available on both the Dashboard and the Ads Manager (Insights) pages. When you change the date range, all metrics, charts, and tables recalculate based on the selected period.
Step-by-Step Guide
1. Select Your Current Period
On the Dashboard or Ads Manager, use the date picker to set your primary period — this is the performance window you want to analyze.
Common selections:
- Today — real-time monitoring
- Yesterday — full-day review
- Last 7 days — weekly performance
- Last 30 days — monthly overview
- Custom range — any start and end date
2. Note Your Baseline Metrics
Before comparing, record (or mentally note) the key metrics for your selected period:
- Total spend
- Conversions
- Revenue
- ROI
- CTR
3. Switch to the Comparison Period
Change the date range to a previous period of the same length. For example:
- Comparing this week vs. last week: switch from "Mar 10–16" to "Mar 3–9"
- Comparing this month vs. last month: switch from "Mar 1–16" to "Feb 1–16"
4. Analyze the Differences
Look for significant changes in:
| What to Compare | What It Tells You |
|---|---|
| Spend | Are you spending more or less? Was the change intentional? |
| Conversions | Are you getting more or fewer results? |
| ROI / ROAS | Is your return improving or declining? |
| CTR | Is your audience engagement changing? |
| CPA | Is your cost per acquisition trending up or down? |
| CPM | Is the cost of reaching people changing (auction pressure)? |
5. Use the Spend Chart for Visual Comparison
The Spend Chart on the Dashboard gives you a visual daily trend. By extending the date range, you can see:
- Day-over-day consistency or volatility
- Weekend vs. weekday patterns
- The impact of budget changes on specific dates
- Seasonal trends
Spend Chart — Daily Spending Trends
6. Drill Down in Ads Manager
For granular comparison, use the Ads Manager (Insights) to drill from campaigns → ad sets → ads. This reveals which specific entities drove the change:
- Did a single campaign spike?
- Did a new ad set underperform?
- Did a creative stop converting?
Options and Configuration
Timezone Considerations
When comparing periods, keep your timezone setting consistent. Switching timezones between comparisons will shift how daily data is grouped, leading to misleading comparisons.
If your accounts span multiple timezones, use a fixed timezone (e.g., your local timezone) for all comparisons to ensure consistency.
Currency Considerations
If comparing periods where exchange rates changed significantly, use a fixed currency to ensure spend and revenue amounts are comparable. Otherwise, currency fluctuations could distort your comparison.
Available Date Range
Use the Insights Date Range endpoint to check the earliest and latest dates available in your data. Wevion stores data from the first sync onward — you can compare as far back as your account history allows.
FAQ
Q: Is there an automatic period comparison feature (e.g., "vs. previous period")? A: Period comparison is done manually by running separate date ranges. You select different date ranges and compare the results yourself. This gives you full control over exactly which periods to compare.
Q: What's the best time window for comparison? A: It depends on your optimization cycle:
- Daily changes: Compare today vs. yesterday
- Weekly optimization: Compare this week vs. last week (same day count)
- Monthly reporting: Compare this month vs. last month
- Seasonal analysis: Compare this period vs. the same period last year
Q: Should I compare equal-length periods? A: Yes, always. Comparing 7 days against 30 days will show inflated numbers for the longer period. Keep period lengths identical for meaningful comparisons.
Q: How do I account for weekday vs. weekend patterns? A: Compare week-to-week (Mon–Sun vs. Mon–Sun) rather than arbitrary 7-day windows. This ensures the same days of the week are represented in both periods.