Kilter–Aurora: The Truth Behind the App’s Disappearance

What really happened when the old Kilter app vanished at the end of March? Based on documents reviewed by Vertige Media and direct exchanges with both Aurora and Kilter, this follow-up looks back at the sequence of events, the gray areas it left behind, and what it reveals about the structural fragility of connected training boards.

The Block'Out Evry Kilter Board, near Paris © Vertige Media

When we first investigated the conflict between Kilter and Aurora in the fall of 2025, the heart of the story was never just the legal fight. It came down to a more uncomfortable question for the entire connected-board ecosystem: what is a “smart” wall worth when part of its intelligence lives somewhere else? By late March 2026, that question was no longer theoretical. The old Kilter app was gone, training histories disappeared from the interface, and thousands of climbers realized that years of accumulated sessions could suddenly end up hanging on a dispute involving brands, code, hosting, and usage rights.

The quickest explanations naturally took over. An app goes down. A third-party provider cuts access. A new app gets rushed out. But that version of events is too thin to explain what actually happened. Because behind the incident, a whole dependency structure suddenly came back into view.

Not a Software Bug

To understand what happened in late March, start with one basic point: the old Kilter app did not stop working because of a technical bug in the usual sense. It broke at the point where law, software, and infrastructure met.

“On March 19, Kilter demanded that Aurora immediately stop using Kilter's trademarks and copyrights with the threat of legal action if Aurora did not comply”

Peter Michaux, founder of Aurora Climbing

On March 19, 2026, Kilter sent Aurora a cease-and-desist letter that Vertige Media was able to review. In that document, the company demanded the immediate end of any use of its trademarks, along with certain visual elements tied to the “Kilter Board Design,” and threatened to add further claims if Aurora did not comply within five business days. By that point, this was no longer just a deteriorating business relationship. It was an IP takeover.

Aurora, for its part, was very clear with us about how it read that sequence. Peter Michaux, founder of Aurora Climbing, said: “Yes, Kilter's cease and desist letter was the direct trigger for the app going offline.” He continued: “On March 19, Kilter demanded that Aurora immediately stop using Kilter's trademarks and copyrights with the threat of legal action if Aurora did not comply.” He then added: “On March 24 and 25 Aurora notified Kilter and their counsel that we understood the demand as requiring Aurora to stop offering or supporting the app, and for them to let us know if that was not what they meant to happen. Kilter did not respond directly, and their counsel left our counsel a voicemail advising that they required strict compliance with the demand.”

That is also where its communication seems to rest on the gap between the letter and its effects

Vertige Media also reviewed the letter Aurora’s attorney sent to Kilter’s attorney on March 25. It states that “it is clear to Aurora that it cannot continue to offer for download or support the Aurora App,” then says the company would request that the app be removed from the Apple and Google stores, shut down the website, stop hosting, and end support. Put plainly, Aurora put in writing that it viewed the cease-and-desist as incompatible with continuing the service.

We also reviewed the March 25 email Peter Michaux sent to Jackie Hueftle, head of Kilter, as well as text messages making the same point. In substance, Michaux said that if Kilter’s intent was not to force the app offline, it needed to say so clearly. That distinction matters, because it separates two things Kilter later tends to blur together, both in its written response to Vertige Media and in its public communication around the new app. On one side, there is the lack of public notice to users. On the other, there were warnings sent to Kilter before the cutoff. Those are not the same thing.

That is where Kilter’s position gets more interesting. In the written response it sent to Vertige Media, the company acknowledges that “Aurora indicated it did not see a path forward and intended to remove the app.” But it also says that “the app was ultimately removed without advance notice to Kilter or to users,” and adds that “Kilter was not given advance notice of the timing of the app’s removal, eliminating any opportunity to inform users or support a responsible transition.” The wording is careful. Kilter is not claiming there were no warning signs at all. It shifts the conversation from whether a warning existed to whether it was told the exact moment the cutoff would happen.

That is also where its communication seems to rest on the gap between the letter and its effects. Kilter never explicitly says it asked for the app to be removed. But it also does not answer the reverse question, which is the central one here: what, exactly, did it expect Aurora to do after receiving a cease-and-desist demanding the immediate end of any use of the Kilter name, logo, and visual elements that made up the app as it then existed? In other words, it all reads as if Kilter is trying to separate the letter from its real-world consequences: not writing “take down the app” in black and white, while leaving Aurora with an extremely narrow, if not impossible, set of options.

We followed up with Kilter on that exact point, along with two other simple questions: yes or no, did it expect Aurora to stop operating the app after March 19, and what, point by point, was “factually inaccurate” in Aurora’s version of events? The reply we received was brief: “This is all we are able to send at this point.” Again, that partial silence does not erase Kilter’s position. But it does leave the most sensitive parts of its version unanswered.

The Wall and Its Brain

The most revealing part of this may not be in the lawyers’ letters, but in Kilter’s own public communication. In a post published March 31 on Climbing Business Journal, explicitly presented as a “press release,” Kilter says the new app was launched earlier than planned, that it was never meant to go out in that condition, and above all that, “for the first time,” the company now controls “the entire stack.” The site also notes that the “releases are written by the sponsor and do not represent the views of the Climbing Business Journal editorial team.”

That phrase deserves a closer look. To say the company now finally controls the whole stack is to admit that it did not before. Put differently, the core issue is not just that an app disappeared. It is that for years, the industry treated as normal a product whose most critical pieces were split across multiple hands: the brand on one side, the code and infrastructure on the other, and the user experience in the middle, suspended on the strength of that arrangement.

That is exactly what our first investigation had already brought into focus in the fall of 2025. Behind the apparent magic of connected boards, there is not just a panel, backlit holds, and a global community. There is governance. Who decides what lights up? Who manages versions? Who owns the memory of past sessions? Who decides compatibility between hardware, firmware, app, and data? As long as everything works, those questions stay invisible. The moment the agreement breaks down, they become central again.

The Climbing article adds an important piece of context here. It notes that the Kilter–Aurora relationship had already been deteriorating for several years and reports that Kilter had been quietly developing a new app since 2022. It also says that in March 2025, that new app was reportedly modified so it could potentially replace Aurora’s controller. That point matters. It does not prove that the March 26 shutdown was fully premeditated by Kilter. But it does rule out the idea that this was an entirely improvised scramble from start to finish. The separation was already underway before it became public. The cutoff just made it irreversible.

One public clue points in the same direction: on Google Play, the listing for the new Kilter app shows an update dated March 16, 2026, three days before the cease-and-desist was sent to Aurora. That obviously does not tell us when development began. But it does confirm, at minimum, that an Android version of the new app already existed before the situation suddenly accelerated.

On March 30, in an order reviewed by Vertige Media, a federal judge in Colorado dismissed Kilter’s lawsuit against Aurora without prejudice

Here too, Kilter’s written response to Vertige Media says a lot through what it leaves unsaid. Yes, the company acknowledges that a new platform was already in development. No, it does not say exactly since when, or how far testing had progressed by the time the old app was removed. And that timing matters. Because it tells us whether we are looking at a backup plan that got shoved forward, or a future that was already waiting in the wings.

The Memory in the Holds

There is one last thing this case reveals: what data means, and maybe more broadly what ownership means, in connected sports.

In the days after the cutoff, a lot of people talked about “lost data.” That makes sense from the user side. It is less accurate if you try to look at what is actually at stake.

Aurora says it has kept the data and is providing exports to users who request them. Kilter, for its part, says climbers “deserve their data,” says it is working on an official recovery solution, but acknowledges that access to older histories remains limited because the old app was operated by Aurora. In its public communication, Kilter also says it cannot promise recovery of users’ “logbooks” and “history,” while highlighting a process that allows some users to recover the problems they created.

But it is important not to blur two different things here. Recovering problems created under an account is not the same as restoring a full history of sends, attempts, projects, and progress. For climbers, then, the issue is not just whether the data still exists somewhere. It is whether that data can actually be retrieved, reviewed, and reused in the new app without a pile of friction. And on that front, things are still a long way from a full recovery.

That asymmetry probably is not trivial. Individual training histories matter first to users. Community-created problems matter to users too, but they also matter to the board’s value itself. They feed the catalog, thicken the offering, sustain the network effect, and contribute in a very concrete way to the strength of an ecosystem like Kilter. That does not mean Kilter is indifferent to personal histories. But it does help explain why the recovery of user-created problems has such a visible place in its communication, while the full restoration of individual tracking remains, at this stage, much more uncertain.

On March 30, in an order reviewed by Vertige Media, a federal judge in Colorado dismissed Kilter’s lawsuit against Aurora without prejudice. That does not mean Kilter lost on the merits. It means that, in the judge’s view, Colorado is not the place to decide the case. The dispute belongs in British Columbia, Canada, in part because the contract between the parties already designated British Columbia courts as the proper forum in the event of litigation.

A court may later decide who was legally right. But one thing is already clear: at the end of March, connected indoor climbing got a look at its own fragility. Behind the promise of a product that seemed simple, seamless, almost transparent, there was a setup far less stable than it looked. And climbers were the first ones to pay for it.