Eat This Much vs Lumen
Features, pricing and Editor Score side by side — to help you pick the right health & lifestyle tool in 2026.
Quick verdict
On our Editor Score, Eat This Much and Lumen land almost level. Pick Eat This Much if you want automatic weekly meal plan generation from calorie and macro targets; choose Lumen for handheld CO2 sensor with flow meter. On pricing, Eat This Much is the one with a free or freemium plan, so it's the cheaper place to start.
Eat This Much vs Lumen at a Glance
| Pricing | Freemium | Subscription |
| Free tier | ||
| Best for | automatic weekly meal plan generation from calorie and macro targets | handheld CO2 sensor with flow meter |
Eat This Much
Eat This Much generates weekly meal plans from your calorie and macro targets, food preferences, budget, and schedule, then produces a grocery list that can be sent to Instacart or AmazonFresh — with keto, Mediterranean, paleo, vegan, and vegetarian options.
- Removes the daily decision rather than only recording it afterwards
- Budget as a real input, which most meal planners ignore entirely
- Virtual pantry genuinely reduces duplicate buying and waste
- Grocery list to delivery in one sitting concentrates the friction
- Plans repeat when macros, budget, and exclusions are all tight
- Recipe appeal is variable — nutritionally sound is not always appetising
- Assumes you cook; near-useless if you mostly eat out
Lumen
Lumen is a portable metabolic device using a CO2 sensor and flow meter to read the carbon dioxide concentration in a single breath, indicating which fuel your body is using. It builds a daily plan of what to eat and when, flags muscle-loss risk, and guides fuelling around workouts.
- Puts a measurement that required a laboratory into a pocket
- Cites peer-reviewed validation rather than claiming to be science-backed
- University collaborations named rather than implied
- Removes calorie counting, which almost nobody sustains
- Infers from one gas where laboratory testing measures two
- Validation of the measurement is not validation of the outcome
- Transformation testimonials are selected individual results
Which Should You Choose?
Choose Eat This Much if…
- you want automatic weekly meal plan generation from calorie and macro targets
- a free or freemium plan is important
Choose Lumen if…
- you want handheld CO2 sensor with flow meter
Eat This Much vs Lumen: The Verdict
Your use case decides this one: Eat This Much leans into automatic weekly meal plan generation from calorie and macro targets, while Lumen is built for handheld CO2 sensor with flow meter. Weigh features and pricing for your workflow. Eat This Much is the lower-cost place to start thanks to its free or freemium plan; the other is worth a trial if its feature set fits better.
Frequently Asked Questions
Is Eat This Much better than Lumen?
Neither is universally better — it depends on your budget and which features matter most. The side-by-side breakdown above shows where each one wins.
What is the difference between Eat This Much and Lumen?
Eat This Much (freemium) is best for automatic weekly meal plan generation from calorie and macro targets, while Lumen (subscription) is best for handheld CO2 sensor with flow meter. See the full feature and pricing comparison above.
Is Eat This Much or Lumen cheaper?
Eat This Much has a free or freemium plan, so it's the cheaper way to start. For paid plans, check each tool's current pricing on its review page.
Which is better for beginners, Eat This Much or Lumen?
Eat This Much is usually the easier starting point thanks to a lower barrier to entry. Beginners should favour a free tier and a simple interface over raw power.
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About the Authors
AI Tools Comparison Analyst
Olivia runs side-by-side comparisons and benchmarks, digging into pricing, features, and real-world performance so readers can choose between competing AI tools with confidence.
Senior AI Tools Reviewer
Daniel reviews AI tools the slow way — by actually using them on real projects. His reviews cover what works, what breaks, and who each tool is genuinely a good fit for.
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Last updated October 2026. Comparisons are ranked by our Editor Score (features, value and pricing, blended with verified user reviews where a tool has them) — see our methodology.