# Insider One vs Smartly: who uses which

On usedby, 40 companies use Insider One and 9 use Smartly. No company is listed with both yet. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side. Latest check 2026-10-08: 49 of 49 public lines checked.

## Side by side

|  | [Insider One](https://www.usedby.ai/tools/insider-one.md) | [Smartly](https://www.usedby.ai/tools/smartly.md) |
|---|---|---|
| Public customers | 40 | 9 |
| Confirmed | 34 | 9 |
| Observed | 6 | 0 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers | Fashion & Apparel (5), Automotive Manufacturing (3), Insurance & InsurTech (2) | Fashion & Apparel (1), Marketplace (1) |
| Category | Marketing Personalization & Ads | Marketing Personalization & Ads |
| Security | ISO 27001 ([insiderone.com](https://insiderone.com/soc-2-examination-for-insider-growth-management-platform/), checked 2026-10-08) | ISO 27001 ([smartly.io](https://www.smartly.io/security), checked 2026-10-08) |
| Data processing terms | A data processing agreement is available. ([insiderone.com](https://insiderone.com/legal/dpa/), checked 2026-10-08) | A data processing agreement is available. ([smartly.io](https://www.smartly.io/security), checked 2026-10-08) |
| Integrations | Google Ads, Facebook Ads, TikTok Ads, Google Analytics, Amplitude, Mixpanel, Segment, Salesforce CRM, Shopify, Klaviyo, Mailchimp, HubSpot CRM ([insiderone.com](https://insiderone.com/integrations/), checked 2026-10-08) | — |
| Data residency | — | Europe ([smartly.io](https://www.smartly.io/security), checked 2026-10-08) |

## Published results

Reviewed stories only; usedby did not measure the figures.

- Insider One: [Slazenger](https://www.usedby.ai/case-studies/slazenger-insider-one.md): **49x**: “How Slazenger gained 49x ROI in only 8 weeks” (published 2026-08-31)
- Insider One: [Safat Home](https://www.usedby.ai/case-studies/safat-home-insider-one.md): **$310K**: “$310K in incremental revenue” (published 2023-07-10)

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Source: https://www.usedby.ai/compare/insider-one-vs-smartly · How we check: https://www.usedby.ai/methodology