Postclic premium unlimited: promotional offer at $1.61 for 48h, then $87.71 per month without commitment

Cancellation service #1 in Australia
Lumen is a handheld metabolic tracker paired with a subscription-based app that turns single breath measurements into personalised nutrition and lifestyle guidance. The device measures exhaled CO2 and uses an algorithm to estimate whether your body is burning fats or carbohydrates, then the app provides daily meal and timing suggestions, coaching and history. First-tier offers are sold as bundled packages that pair the device with a short membership trial and longer annual options; pricing and bundle structure vary by promotion and may include monthly renewal charges for the app membership.
First, cost is the most common reason: many buyers find the ongoing membership does not match their perceived value after the initial period. Next, functional issues and device reliability trigger cancellations when outcomes do not meet expectations. Additionally, access and data concerns arise because membership controls the level of app functionality and historical insight. Most importantly, consumer friction with returns or refunds and poor support experiences push users away.
According to Lumen’s published terms and FAQs, you may cancel at any time but cancellations generally take effect on the next billing cycle rather than immediately. The company states that fees are non-refundable except where its return and refund policy or applicable law provides otherwise. The subscription’s effective date and renewal rules are detailed in the terms, including how trials and activation timings apply.
First: billing cadence matters because a cancellation filed part-way through a paid period commonly means access continues until the period ends. Next: proration is not guaranteed; Lumen’s terms indicate renewals and refunds depend on the plan and legal obligations. Additionally: a device sold with bundled membership may retain limited measurement capability after membership ends for devices purchased after certain dates, while premium features or historical data access are typically disabled when a membership lapses.
Users report a mix of positive and negative experiences. Positive reports highlight useful metabolic insight while subscribers used the app actively. Negative reports cluster around difficulties getting refunds, slow or unresponsive support, and feeling locked into subscription-based access to core device functions. Public reviews show recurring frustration over return policies and post-purchase support.
Most reviewers mention timing and proof as decisive: disputes often hinge on the exact activation or purchase date and whether the trial period covered a return. Several users say cancellation did not immediately stop a renewed charge, requiring a further dispute process. From these reports, the practical takeaway is to verify billing dates, keep receipts and screenshots, and track whether the device remains partially functional after membership ends.
Plan names, trial lengths and renewal behaviour vary by promotion. Where pricing appears in local media and reviews, device bundles and promotional packages are commonly reported alongside an ongoing monthly membership fee. Use the table below to map typical bundle types rather than exact live prices.
| Bundle type | What it includes | Price (reported or varies) |
|---|---|---|
| Starter bundle | Device + short membership trial (1 - 3 months) | Varies (promotional pricing reported) |
| Annual bundle | Device + 12 months membership | Varies by promotion; ongoing membership renewal applies |
| Monthly membership only | App access and coaching (device required) | Ongoing monthly fee applies; varies by region |
For an approximate benchmark, independent coverage has referenced device promotions and monthly renewals in the low tens of A$ per month range; promotional device bundles have been reported at different price points depending on timing and offers. Always check the purchase details you received for the exact numbers.
If your reason for cancelling is value or data access, compare the core features rather than headline price. The table below highlights basic differences to help decision-making.
| Service | Primary measurement | Access model |
|---|---|---|
| Lumen | Breath CO2 metabolic estimate | Device sold with required subscription for full features; membership renews |
| Continuous glucose monitoring alternative | Glucose readings via sensor | Often per-sensor and app access; ongoing costs vary |
First, collect the items listed in the documentation checklist so you can prove purchase timing and plan type. Next, check the exact renewal date on your billing statement and note whether the purchase was a bundle that included an initial membership term.
Additionally, check whether your device purchase date falls under specific product updates or stated policies (for example, some purchases after a given date retain limited measurement capability after membership ends). Record any promotional terms that applied at the time of purchase.
Most Lumen documentation indicates fees are non-refundable except where the return policy or consumer law provides otherwise. In practice this means refunds often depend on whether you are claiming a statutory remedy for a faulty product or relying on a seller goodwill return window.
First: statutory consumer guarantees remain available and cannot be overridden by a vendor’s terms. Next: there is no broad automatic cooling-off rule for ordinary online purchases unless the sale was unsolicited; remedies for change of mind are therefore dependent on the seller’s stated return policy. If you assert a remedy under consumer guarantees, outline the fault, provide evidence and request the specific remedy you seek.
Keep records: a timestamped ledger of charges, screenshots of terms and receipts, and notes on any support interactions are the most effective tools in a dispute. If you face an unauthorised or incorrectly applied renewal, a dispute with your payment provider is an available route; retain the same documentation and a clear timeline to support your claim.
Most importantly, when escalating, reference the specific transaction dates and quoted terms so the dispute handler can match evidence to amounts charged. If a consumer remedy is needed for a faulty device, cite the consumer guarantee breach and the relief you seek.
Most cancelations take effect at the end of the current billing period and access to premium app features typically ends when the paid term expires. For users who purchased under newer package terms, measurement capability may remain but historical data, personalised plans and coaching access are commonly disabled after the membership lapses.
Next steps: monitor billing statements for unexpected charges, keep a copy of the cancellation confirmation you received, and if you are charged after the effective date prepare your documentation to support a dispute or consumer remedy claim.
Already sent a letter? Enter its tracking number to see its proof of dispatch and certified timestamp.
Written by Ruby Scott
Digital-law graduate · 3 years experience
Graduate in digital law and passionate about secure written communication, I have been writing guides on certified mail and electronic registered delivery for 3 years.