Comparison
| Tool | Price from | Free plan | Category |
|---|---|---|---|
 Cal AI | not listed | trial | Health & fitness |
 Heidi | not listed | yes | Health & fitness |
 Ada Health | not listed | ? | Health & fitness |
 Infermedica | not listed | ? | Health & fitness |
 Wysa | not listed | ? | Health & fitness |
 Let's Enhance | 9 USD/mo | trial | Image generators |
 Bigjpg | not listed | yes | Photo editing |
 Deep-Image.ai | not listed | trial | Photo editing |
 DeepAI | 9.99 USD/mo | yes | APIs & models |
Each alternative in short
1. Heidi
AI care partner that handles clinical documentation (scribe), evidence lookup and admin tasks for clinicians and healthcare teams.
Yes, there is a free plan. Free plan with unlimited transcription, standard templates, unlimited evidence answers with transparent citations and limited patient linking and document sharing.
2. Ada Health
AI symptom assessment app that helps people understand their symptoms and health, and enterprise solutions that route patients to appropriate care.
The vendor does not state this clearly on the homepage or pricing page.
3. Infermedica
Clinical AI triage that guides patients to the right level of care via chat, voice, or call center, for health systems, insurers, and providers.
The vendor does not state this clearly on the homepage or pricing page.
4. Wysa
AI mental health companion offering self-help conversations, CBT-based exercises and clinical support pathways for individuals and healthcare organisations.
The vendor does not state this clearly on the homepage or pricing page.
5. Let's Enhance
AI tool that upscales, sharpens, restores and enhances photos for print and web, for photographers, artists and sellers.
There is a free trial. 10 free credits on signup, no credit card needed; free tier allows input up to 24 MP or 50 MB and upscaling up to 8 MP, with a watermark and 6 months storage.
6. Bigjpg
AI image upscaler that enlarges anime-style artwork and photos up to 16x while reducing noise and preserving lines and colors.
Yes, there is a free plan. Free use with limits: images up to 3000x3000px and 5M; the browser must stay open unless you are logged in.
7. Deep-Image.ai
AI photo enhancer for upscaling, denoising, sharpening, background removal and generation, aimed at e-commerce sellers and photographers.
There is a free trial. 10 free credits with every account, no credit card required.
8. DeepAI
All-in-one creative AI platform for images, video, music, chat, photo editing and voice, for hobbyists, artists and developers.
Yes, there is a free plan. Free access without an account, with limited HD images and editing, limited standard chat messages, up to 200 Theos a day in DeepAI Code, limited AI music generation, 60 seconds/day of AI Voice Chat, and a limited photo editor. No Genius or Super Genius modes, live web browsing, video, or Concierge tasks.
FAQ
What is the best alternative to Cal AI?
The most popular option in the same category is Heidi. See the comparison table above.