Perimenopause is badly served by software. It lasts years, affects sleep, mood, weight, temperature and energy in ways that shift month to month, and most health apps treat a 47-year-old woman exactly like a 22-year-old man with a calorie target. Tidalflow, a five-person Amsterdam startup founded in 2023, built its whole company around that gap. Its only product is Lila, an AI coach that asks about your symptoms and adapts its guidance as your body changes. Over a thousand women have rated it around 4.7 out of 5, which is not nothing. Whether the numbers in its App Store listing mean anything is a separate question.
Read this before anything else
Lila is a wellness coaching app, not a medical device, and Tidalflow says so in its own terms: it is not a substitute for medical advice, and you should always consult your doctor about perimenopause symptoms. Nothing on this page is medical advice either. If you are experiencing perimenopause symptoms, speak to a GP or a menopause specialist, particularly before changing your diet, starting supplements or making decisions about hormone therapy.
| Best for | Main use | Pricing model | Platforms | Key limitation |
|---|---|---|---|---|
| Women in perimenopause who want conversational support rather than a food diary | Symptom tracking, meal guidance and daily AI coaching through perimenopause | Free download, in-app purchases $5.99 to $39.99. Checked 29 Sep 2026. | iOS and iPad only, with Apple Health integration | No clinical validation published for any efficacy claim |
Tidalflow Is The Company, Lila Is The Product
This confuses people, so it is worth being direct. Tidalflow.com is a single-page company site: a statement of intent, a link to its product, and nothing else. There is no software to buy at tidalflow.com.
The actual product is Lila, at getlila.com and on the App Store. The company is registered as NerveCenter.ai B.V., based in Amsterdam, founded in 2023, with around five employees and backing from the startup generator Antler.
The app has also been renamed several times, appearing as Lila Perimenopause, Lila Perimenopause Diet and Lila Peri Weight Loss Coach. That drift matters, because the positioning has moved from symptom support toward weight loss, and those are different products with different risks.
What Lila Actually Does Day To Day
Setup takes about two minutes. You tell Lila about your body, your symptoms and your goals, and it generates a plan. From there the interaction is conversational: you log meals and how you feel, and it responds with adjustments rather than a static chart.
Readers who need medical assessment rather than wellness coaching can explore Doctronic’s AI symptom conversations and doctor consultations, while recognising that its AI chat does not provide a medical diagnosis. Apple Health integration lets it read the health and fitness categories you approve.
For a separate fitness-focused use case, Dr. Muscle’s personalised strength-training programme adapts workout difficulty and progression according to training performance, although it is not designed specifically for perimenopause. A plan that ignores that a woman’s symptoms differ substantially between month one and month eighteen is a plan that stops fitting. Building adaptation into the core is the right idea, whatever you conclude about the execution.
Six things the App Store listing does not tell you
- The efficacy claims have no source. The listing states that most women feel a difference within the first week and that 72 percent report weight loss within two weeks. No study, sample size, methodology or date supports either figure.
- Four price tiers with no explanation. In-app purchases appear at $5.99, $12.99, $19.99 and $39.99, all labelled Lila AI Unlimited Access. Nothing published says what distinguishes them.
- No AI model is named. The app gives daily dietary guidance, but never discloses which model produces it or how the nutritional rules were set.
- Your usage data may follow you. Apple’s privacy label states usage data may be used to track you across other companies’ apps and websites.
- The age rating is 9+. That is an Apple content classification rather than an audience recommendation, but it is an odd label on an app designed for women over 40.
- Growth claims are investor-facing. Figures such as 35,000-plus users and 100 percent month-on-month growth come from a fundraising profile rather than an audited source.
None of this makes Lila a bad app. Over a thousand women rating it 4.7 suggests many find it genuinely useful. It means the marketing runs ahead of the evidence, which is worth knowing before you pay.
The Weight Loss Repositioning Deserves A Closer Look
The shift in the app’s name from perimenopause support toward weight loss coach changes what it is.
Symptom support is low risk. An app helping someone understand hot flushes, sleep disruption and mood changes is providing information and structure. Daily calorie and macro targets, delivered by an AI, to women in a hormonally volatile life stage, is a different proposition entirely.
If you have any history of disordered eating, or you find calorie targets difficult, that is a conversation to have with a doctor or a registered dietitian before installing an app that adjusts your diet targets every day. That is true of every diet app, not just this one.
Is Tidalflow’s Lila Worth Paying For?
The company is solving a real problem for a group that software has genuinely neglected, and the user response suggests the execution lands for many women. A conversational coach that adapts to a changing body is a better shape for this than a static meal plan, and the founder’s visible involvement is a good sign in a small team.
What is missing is evidence. A claim that 72 percent of users lose weight within two weeks is the kind of statement that needs a study behind it, and there is not one. Four price tiers with identical descriptions is not acceptable in any category, let alone health. And a five-person team with no clinical advisors publishing supplement guidance is a gap worth naming.
Our position: download it free, use the symptom tracking, and see whether the conversation helps. Treat the diet targets as a starting point to discuss with a professional rather than instructions. And find out exactly what each price tier includes before you pay for any of them.
What Tidalflow Should Fix Next
- Publish the evidence behind the weight loss and symptom relief claims, or remove the figures.
- Explain what each of the four in-app purchase tiers actually includes.
- Name a clinical advisor or registered dietitian behind the nutritional approach.
- Ship an Android version, since roughly half the target audience cannot install it.
- Remove cross-app usage tracking, or justify it plainly given the health data involved.
- Build out tidalflow.com with a real about page, team and company information.
