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The most effective disk cleaner for Windows, and the only reversible one. Finds duplicates, old installers and orphaned game caches that other tools walk past. 100% local, no telemetry, one-time payment.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Website, pricing, platforms and company facts side by side.
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| Website | vallt.app | diffyn.com |
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| Company | Startup from Brazil · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Vallt Cleaner is a disk cleanup application for Windows 10 and 11. Most cleaners run down a list of known temporary folders and stop there. Vallt reads the structure of the drive instead, finding duplicates, forgotten installers, orphaned game caches and leftovers that traditional tools walk...
No description of Diffyn yet.
What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


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The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Vallt Cleaner and Diffyn.
Vallt Cleaner's answer
Three things. Vallt Cleaner finds more junk than traditional cleaners, because it reads the structure of the drive rather than running down a fixed list of temp folders. It never puts a file at risk doing it: cleaning moves files to a local quarantine you can undo with one click, and space is only freed when you deliberately purge. And it runs entirely on your machine, with no account, no cloud and no telemetry, in a category where data collection has been the norm. No other cleaner combines all three.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
Vallt Cleaner's answer
Traditional cleaners delete permanently, and some are known for wiping folders users actually cared about. Vallt Cleaner cannot cause that outcome: nothing is removed without an explicit second confirmation. Where competitors have shipped telemetry, ads and bundled software, Vallt Cleaner collects nothing at all, and nothing about your files ever leaves the machine. It is also a one-time payment in a category that has largely moved to subscriptions. It makes no claims about speeding up your PC, and it does no registry cleaning.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Vallt Cleaner's answer
Python 3.13, PySide6 (Qt) for the desktop interface, and SQLite for the local file index. Windows installer built with Inno Setup. Licensing uses Ed25519 signatures validated locally.
Diffyn's answer:
React, Next.js, POSTGRESQL
Vallt Cleaner's answer
Windows 10 and 11 users who are running out of disk space and are afraid of deleting the wrong thing. Gamers whose libraries and shader caches consume hundreds of gigabytes, content creators with large project files, and anyone on a smaller SSD where every gigabyte matters. It also fits privacy-conscious users who avoid traditional cleaners specifically because of their reputation for telemetry and bundled software.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
Vallt Cleaner's answer
It started from a recurring problem: a drive fills up, you go looking for things to delete, and then you freeze, because half the folders are unidentifiable and the other half look risky. Existing cleaners made that worse by deleting permanently, and several of them turned out to be collecting data while doing it. Vallt Cleaner was built on the opposite premise: cleaning should be reversible and entirely local, so you can be aggressive about recovering space without gambling on it and without trusting anyone with your data.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
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