# Auditoria.AI vs Zest: who uses which

On usedby, 18 companies use Auditoria.AI and 28 use Zest. 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 2026-10-07: 36 of 46 public lines checked.

## Side by side

|  | [Auditoria.AI](https://www.usedby.ai/tools/auditoria-ai.md) | [Zest](https://www.usedby.ai/tools/zest.md) |
|---|---|---|
| Public customers | 18 | 28 |
| Confirmed | 7 | 18 |
| Observed | 11 | 10 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers | Hospitals & Care Providers (1), Schools & Universities (1), Streaming & Content (1) | Banking & Mortgages (23) |
| Category | Finance & Accounting AI | Finance & Accounting AI |
| Data processing terms | A data processing agreement is available. ([auditoria.ai](https://www.auditoria.ai/trust/), checked 2026-10-07) | — |

## Published results

Reviewed stories only; usedby did not measure the figures.

- Auditoria.AI: [RingCentral](https://www.usedby.ai/case-studies/ringcentral-auditoria-ai.md): **under two minutes**: “Most invoices were processed in under two minutes, with a 96% accuracy rate.” (published 2026-06-30)
- Auditoria.AI: [Momentum Telecom](https://www.usedby.ai/case-studies/momentum-telecom-auditoria-ai.md): **One headcount**: “One headcount One Headcount added across 250% revenue growth.” (published 2026-06-30)

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Source: https://www.usedby.ai/compare/auditoria-ai-vs-zest · How we check: https://www.usedby.ai/methodology