Therma vs Welltory
Welltory is an HRV and stress tracker with a mood layer. Therma is a mood and reflection tool with deep HRV integration. Same raw ingredients, different jobs to be done.
By Omar Rantisi, Founder of Therma
The 30-second verdict
Choose Welltory if what you want is a daily HRV measurement, a stress and energy score, and a way to log mood alongside it. Choose Therma if what you want is a mood-first reflection tool where HRV is the context that helps the AI interpret your patterns.
Feature comparison
| Feature | Therma | Welltory |
|---|---|---|
| Primary use case | Mood reflection with HRV context | HRV and stress measurement with mood context |
| Time per check-in | ~60 seconds (mood + AI question) | ~60 seconds (HRV capture + mood log) |
| HRV measurement from phone camera | No (pulls from wearable) | Yes |
| Native Oura integration | Yes | No (via Apple Health only) |
| Native Whoop integration | Yes | Limited |
| Apple Watch sync | Yes | Yes |
| Garmin and Fitbit support | On roadmap | Yes |
| AI pattern interpretation | Yes (weekly insight reveals) | Limited (numeric recommendations) |
| Conversational AI reflection | Yes | No |
| Daily stress and energy scores | No (by design) | Yes (primary output) |
| Mood journaling | Primary feature | Secondary feature |
| Free tier | Yes (waitlist) | Yes (limited) |
| Premium price | TBD (early adopter discount) | Around $49.99/yr |
| Platforms | iOS (Q2 2026) | iOS, Android |
| Founded | 2024 | 2015 |
Where Therma wins
- Mood-first reflection instead of an HRV dashboard with a mood slider
- Native Oura and Whoop integration, not just Apple Health bridge
- AI weekly insight reveals that interpret mood and HRV together as a narrative
- One precise AI question that adapts to what you said yesterday
- End-to-end encrypted by default
Where Welltory wins
- Genuine HRV measurement from phone camera (no wearable required)
- Broad wearable support including Garmin, Fitbit, and Apple Watch
- Mature product with 10+ years of HRV measurement development
- Daily stress and energy scores are useful for quick triage
- Available on Android today
When to choose which
Choose Therma
You already have a wearable that measures HRV. You want a reflection tool that uses HRV as context for understanding your mood, not as the main event. You care about narrative interpretation more than numeric scores.
Choose Welltory
You do not have a wearable and want to measure HRV from your phone camera. You want a daily stress and energy number as the primary output. You are on Android. You prefer quantified scores over narrative reflection.
Common questions
Is Welltory just for HRV or does it do mood tracking too?
Welltory is HRV-first. It calculates a daily stress and energy score based on HRV and lets you log mood alongside it. The mood layer is useful but secondary. Therma is the opposite: mood-first with HRV as deep context.
Can Welltory measure HRV without a wearable?
Yes. One of Welltory's strongest features is phone camera HRV measurement. You place your finger over the camera for about 2 minutes and it calculates HRV from pulse. Therma does not measure HRV directly, it pulls HRV from your wearable (Oura, Whoop, Apple Watch).
Does Welltory integrate with Oura?
Not natively. Welltory can read Apple Health data, which captures some Oura metrics if you have Oura syncing to Apple Health. Therma is being built with direct Oura API integration, which is higher fidelity and captures more fields (sleep stages, readiness, temperature).
Which has the better AI?
Different kinds. Welltory uses AI for numeric recommendations based on HRV trends (you might get a suggestion to nap or hydrate). Therma uses AI for narrative pattern interpretation across mood entries and wearable data. Neither is strictly better, they are different tools.
Can I use both Welltory and Therma?
Yes, and they complement each other. Welltory for on-demand HRV measurement from your phone camera on days you are not wearing your Oura. Therma for the daily mood check-in and weekly narrative synthesis. Same data universe, different vantage points.
More comparisons
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