SmoothSheet vs Supermetrics: Which Data Import Tool Do You Need?

Choosing the right data import tool for Google Sheets depends on what kind of data you actually need to bring in. If you've been comparing SmoothSheet vs Supermetrics, you've probably noticed they look very different — and that's because they are. One is built for marketing analytics, the other for file-based imports. This guide breaks down exactly where each tool shines so you can pick the right one for your workflow.

Key Takeaways:Supermetrics pulls data from 150+ marketing platforms; SmoothSheet imports CSV/Excel filesSmoothSheet costs $9/month flat — Supermetrics starts at $29/month and scales to $399+Marketing teams should choose Supermetrics; data/ops teams importing files need SmoothSheetSmoothSheet handles 100MB+ files via server-side processing with zero browser crashes

Quick Overview: Two Different Tools for Two Different Jobs

The most important thing to understand about this comparison is that SmoothSheet and Supermetrics solve fundamentally different problems. Supermetrics is a marketing data connector — it pulls campaign metrics from advertising platforms like Google Ads, Facebook Ads, and LinkedIn directly into Google Sheets or Looker Studio. SmoothSheet is a file import tool — it takes large CSV and Excel files and loads them into Google Sheets without crashing your browser.

Think of it this way: if your data lives inside an ad platform's API, Supermetrics is your tool. If your data lives in a file on your computer (or shared drive, or email attachment), SmoothSheet is your tool.

There is some overlap — both get data into Google Sheets — but the paths they take are completely different. Let's dig into the specifics.

Feature Comparison: SmoothSheet vs Supermetrics

Here's a side-by-side look at how these tools stack up across the features that matter most:

The table makes the differentiation clear. These aren't competing products — they're complementary ones. A marketing agency might use Supermetrics for pulling ad spend data and SmoothSheet for importing client CSV reports into the same spreadsheet.

Where Supermetrics Wins

Let's give credit where it's due. Supermetrics is a powerhouse for marketing data, and here's why:

150+ Marketing Platform Connectors

Supermetrics connects to virtually every advertising and analytics platform: Google Ads, Google Analytics 4, Facebook Ads, Instagram Insights, LinkedIn Ads, TikTok Ads, Twitter/X Ads, HubSpot, Salesforce, and many more. If a platform has an API and serves marketing data, Supermetrics probably has a connector for it.

Automated Data Refresh

Set up a query once and Supermetrics refreshes it automatically on a schedule. This is critical for marketing dashboards that need daily or weekly updates without manual intervention. You build the report once, and it stays current.

Data Blending Across Platforms

Need to combine Google Ads cost data with Google Analytics conversion data? Supermetrics lets you blend data from multiple sources in a single query. For cross-platform marketing attribution, this is genuinely powerful.

Looker Studio Integration

Beyond Google Sheets, Supermetrics has native Looker Studio (formerly Data Studio) connectors. If your reporting stack includes Looker Studio, Supermetrics plugs right in.

Enterprise-Grade Templates

Supermetrics offers pre-built reporting templates for common marketing scenarios — PPC dashboards, SEO tracking, social media reporting. These save hours of setup time for agencies managing multiple clients.

For marketing teams running paid campaigns across multiple platforms, Supermetrics is genuinely the best tool for the job. It's purpose-built for that workflow, and nothing else matches its depth of marketing integrations.

Where SmoothSheet Wins

SmoothSheet doesn't try to compete with Supermetrics on marketing data. Instead, it dominates a different category entirely: getting large files into Google Sheets without pain.

Large File Import (100MB+)

Google Sheets has a well-documented file size limit that causes headaches for anyone working with substantial datasets. SmoothSheet processes files server-side, which means your browser never has to handle the heavy lifting. Import a 100MB CSV without your tab freezing, crashing, or timing out.

Server-Side Processing

This is the core technical advantage. When you upload a file through Google Sheets' built-in import, your browser does all the work — parsing, converting, and loading the data. With large files, this leads to crashes, freezes, and the dreaded "File is too large" error. SmoothSheet moves that processing to the server, so your browser stays responsive. You can check whether your file will hit Google Sheets' cell limits before importing.

Dead Simple Pricing

$9 per month. That's it. No per-user fees, no per-destination charges, no tiered plans based on query volume or data rows. One price, full access. Compare that to Supermetrics where costs can quickly climb depending on your data sources and destinations.

No Configuration Complexity

There are no API connections to authenticate, no queries to build, no data schemas to configure. You install the add-on, pick your file, and import. The entire process takes under a minute. For teams that just need to get a CSV into Sheets reliably, this simplicity matters.

20 Free CSV/Excel Tools

SmoothSheet includes a full suite of free browser-based tools — CSV Splitter, CSV Merger, encoding fixer, delimiter converter, and more. These tools handle common data prep tasks that come up before or after importing, all without uploading your data to any server.

Pricing Breakdown

Price is often the deciding factor, so let's be transparent about what each tool costs:

SmoothSheet: $9/month

Flat rate. No tiers. No user limits. You get the full Google Sheets add-on with server-side processing for large CSV and Excel files. That's $108/year for unlimited imports.

Supermetrics: $29–$399+/month

Supermetrics uses tiered pricing that varies by destination and data sources:

• Starter: ~$29–37/month — Limited data sources, single destination
• Growth: ~$159–177/month — More connectors, more destinations, data blending
• Pro: ~$399/month — Full connector library, priority support, advanced features

Important note: Supermetrics charges per destination (Google Sheets, Looker Studio, BigQuery are separate products). A marketing agency pulling data into both Sheets and Looker Studio pays for two subscriptions.

The Value Equation

These prices aren't directly comparable because the tools do different things. Supermetrics at $29/month delivers automated marketing data that would take hours to manually export and compile. SmoothSheet at $9/month solves the specific pain of importing large files that Google Sheets can't handle natively. Both are worth their price for the right use case.

If you're evaluating purely on budget, though: SmoothSheet's flat $9/month is hard to beat for file import needs. For a broader look at how other tools compare, check out our roundup of the best data import add-ons for Google Sheets.

Which Should You Choose?

Here's a practical decision guide based on what you actually need:

Choose Supermetrics If:

• You run paid advertising campaigns on Google Ads, Facebook, LinkedIn, or other platforms
• You need automated, scheduled reporting dashboards
• You blend data from multiple marketing platforms
• Your reporting stack includes Looker Studio
• You're a marketing agency managing multiple client accounts

Choose SmoothSheet If:

• You import CSV or Excel files into Google Sheets regularly
• Your files are large (50MB, 100MB, or more) and cause browser crashes
• You need a reliable, affordable import tool without complexity
• You work in operations, finance, or data teams (not marketing platforms)
• You want a simpler alternative to complex data pipeline tools

Use Both If:

Plenty of teams use both tools without any conflict. A marketing analyst might use Supermetrics to pull daily ad spend data automatically, then use SmoothSheet to import a large CSV export from their CRM or ERP system. The tools sit in different lanes and complement each other well.

If you're comparing SmoothSheet to other file-import-focused tools instead, you might also want to read our SmoothSheet vs Coupler.io comparison.

Frequently Asked Questions

Can Supermetrics import CSV files into Google Sheets?

No. Supermetrics is designed to pull data from marketing platform APIs, not from local files. If you need to import CSV or Excel files, you need a file import tool like SmoothSheet or Google Sheets' built-in import function (though the latter struggles with large files).

Can SmoothSheet pull data from Google Ads or Facebook Ads?

No. SmoothSheet focuses exclusively on file-based imports — CSV and Excel files. It doesn't connect to marketing APIs. For ad platform data, Supermetrics is the better choice.

Is Supermetrics worth the price compared to SmoothSheet?

They solve different problems, so the "worth it" question depends on your needs. If you're a marketing team spending thousands on ad campaigns, Supermetrics at $29+/month saves significant manual reporting time. If you just need to import files reliably, SmoothSheet at $9/month is the more cost-effective option. You're not choosing between them — you're choosing which problem you need solved.

Can I use SmoothSheet and Supermetrics together?

Yes. Both are Google Sheets add-ons and work independently without conflicts. Many teams use Supermetrics for automated marketing reports and SmoothSheet for importing large CSV/Excel files from other business systems. They complement each other rather than compete.

The Bottom Line

SmoothSheet and Supermetrics are both excellent tools — for different jobs. Supermetrics is the gold standard for pulling marketing data from ad platforms into Google Sheets and Looker Studio. SmoothSheet is the most reliable way to import large CSV and Excel files without browser crashes or size errors.

If you're on a marketing team running campaigns across multiple platforms, start with Supermetrics. If you're importing files and hitting Google Sheets' limits, try SmoothSheet at $9/month. And if you need both? Install both — they play nicely together.