# AI App Builders (GenUI): the tools companies use

29 companies on usedby use at least one of the 3 tools in this category with a public customer. Lovable leads with 18 companies. Counts are of companies on usedby, not of the whole market. Latest check 2026-10-05: 16 of 29 public lines checked.

> Generate complete web interfaces and apps via prompts

Family: [Engineering & Data](https://www.usedby.ai/tools/category/engineering-data.md)

## Ranking

Public customers count every public line, job-post signals included; ties share a rank.

| Rank | Tool | Public customers | Confirmed | Observed | Signals |
|---|---|---|---|---|---|
| 1 | [Lovable](https://www.usedby.ai/tools/lovable.md) | 18 | 12 | 6 | 0 |
| 2 | [v0](https://www.usedby.ai/tools/v0.md) | 6 | 0 | 6 | 0 |
| 3 | [Bolt.new](https://www.usedby.ai/tools/bolt-new.md) | 5 | 0 | 5 | 0 |

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Source: https://www.usedby.ai/tools/category/ai-app-builders · How we check: https://www.usedby.ai/methodology