How Callstack launched Simlock on X
51K views, ranked 1949 of the 2314 launches we track. It was saved at well above the usual rate, which is the signal that matters more than reach for anything with a considered purchase behind it.
1:49
Introducing Simlock: a free, open-source tool that turns your machine into a simulator cloud that manages itself, so every coding agent gets its own iOS or Android device, simulator or real phone.
How it compares
A launch means nothing against no one. These are the launches it is actually comparable to, and where this one sits among them.
| Compared with | Launches | Median views | This one | Rank |
|---|---|---|---|---|
| Developer tools launches from accounts under 5K followers | 108 | 250K | 0.2x | 81 |
| Product release the same kind of announcement | 1150 | 566K | 0.1x | 957 |
| under 5K followers accounts of a similar size | 743 | 208K | 0.2x | 548 |
| Every launch all of them, for scale | 2314 | 603K | 0.1x | 1949 |
What this launch shows
The post went out from an account with 2K followers. It was seen 26.1 times over. For under 5K followers the usual multiple is 152.2, so the ranking model showed this to fewer strangers than it shows most launches.
It ranks 548 of 743 launches from accounts that size. Against every launch in the directory it is below the median of 603K views, at rank 1949 of 2314.
Saves led. 1K people bookmarked it, 213.3 per 10,000 views against a directory median of 12. A bookmark is a plan to come back, and it tracks signups and demo requests more closely than a like does.
The rest: 49 replies, 21 quotes, 67 reposts. One bookmark for every 0.9 likes is a high ratio and usually means a product people intend to try.
It starts “Introducing Simlock: a free, open-source tool that turns your machine into a simulator cloud that manages itself, so…”, the same first word as 25% of launches in the directory.
It carries a 1:49 video against a directory median of 66 seconds. Videos over 90 seconds have a median of 590K views in the directory.
The copy runs 35 words, about the usual length for a launch post here, where the median is 41. The body carries a link, so the post had somewhere to send the reader and paid a little reach for it.
It went out on a Friday. Launches posted on a Friday have a median of 647K views in the directory, which makes it the strongest day.
Launching a product on X from a small account covers this: an account with 2K followers has to earn every view from outside its own following. For the next one, read attributing signups to a launch: a save rate this high is the number to follow into the product.
Giving people something to reply to is the guide for it: the conversation is what carried this one. Every launch we track in Developer Tool is on that vertical's directory page.
Questions about this launch
When did Callstack launch Simlock?
Callstack posted the launch on X on 30 October 2026.
How many views did the Simlock launch post get?
51,293 views at the last read, ranked 1949 of the 2314 AI launches Doomers tracks, 26 times the account's following.
Who posted the Simlock launch?
@ChmalSzymon, which had 1,962 followers when it posted.
Planning something like this?
We run launches on X for AI companies, with creators who already hold the audience you want reaching.