Dev tools · alternatives · 2026

24 alternatives to Build with Theta

Prototype and test apps in production w/ fly-on-air updates

Build with Theta is a UI builder that lets developers prototype and test applications in production with live updates, eliminating the need for app releases. It supports A/B testing capabilities and allows designs to… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Build with Theta launched in 2023; newer entries below may have overtaken it.

1. 1
   Loki.Build▲743

   Design and ship studio-grade landing pages with AI

   Dec 2025 · loki.build · its alternatives →

2. 2
   MindOne Builder▲686

   Design-first app builder for native mobile and web

   2024 · mindone.app · its alternatives →

3. 3
   Solid▲639

   AI that builds real web apps

   2025 · trysolid.com · its alternatives →

4. 4
   UI Builder + Mockup tool▲315

   Sketch UI mockups directly on live websites in Chrome

   2025 · chromewebstore.google.com · its alternatives →

5. 5
   Modelence App Builder▲418

   Build real apps, not prototypes

   Feb 2026 · modelence.com · its alternatives →

6. 6
   BuilderKit▲647

   Build and ship AI tools super fast

   2024 · builderkit.ai · its alternatives →

7. 7
   Dualite Alpha▲646

   Local-first AI builder for mobile and web apps

   2025 · dualite.dev · its alternatives →

8. 8
   Build0▲349

   Build custom internal apps in minutes, no coding required

   Nov 2025 · build0.ai · its alternatives →

9. 9
   Alloy ▲433

   AI prototyping with your real app

   Nov 2025 · alloy.app · its alternatives →

10. 10
    BuildShip▲420

    Low-code visual backend builder, powered by AI

    2023 · buildship.com · its alternatives →

11. 11
    Modaal for Android▲312

    Modaal is a cross-platform native AI app builder that lets product people build and ship real iOS and Android apps with their own AI agent. Instead of one React Native codebase drawing the same screens on both phones, Modaal shares the logic, not the screens. Your agent writes re

    Sep 2026 · modaal.dev · its alternatives →

12. 12
    Mockups fixed by making collaboration effortless, built with React▲334

    Your wireframe should be easy to share with any developer on your team. Design fast with iPhone and iPad collaboration. Precursor is productive prototyping.

    2015 · precursorapp.com · its alternatives →

13. 13
    GoodUI Evidence▲300

    People's A/B test results that show which UI ideas work best

    2015 · goodui.org · its alternatives →

14. 14
    UXPin Merge AI▲235

    UI builder for busy devs & designers

    2024 · uxpin.com · its alternatives →

15. 15
    Raydian▲192

    The next frontier of AI product builders

    Nov 2025 · raydian.dev · its alternatives →

16. 16
    Trace AI▲266

    Fastest way to build iOS apps with AI

    2023 · its alternatives →

17. 17
    Spawned▲222

    Build, launch, and discover products in a single platform

    Feb 2026 · spawned.com · its alternatives →

18. 18
    A2UI▲250

    A safe way for AI to build UIs your app can render

    Dec 2025 · a2ui.org · its alternatives →

19. 19
    Acebuilder▲156

    Build landing pages with Aceternity UI

    Jul 2026 · acebuilder.ai · its alternatives →

20. 20
    Internal Enterprise▲162

    Build enterprise-ready internal tools, fast.

    2021 · its alternatives →

21. 21
    abtest.design▲75

    Curated collection of A/B test results

    2024 · abtest.design · its alternatives →

22. 22
    App.build, an open-source AI agent that builds full-stack apps▲90

    2025 · app.build · its alternatives →

23. 23
    NBULA by CNTXT▲50

    Build, test, deploy & monitor AI apps in 8 clicks

    2024 · cntxt.tech · its alternatives →

24. 24
    Alta▲87

    Build a mobile app template in minutes using generative AI

    2023 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →