The short version
- AutoDS, Hustle Got Real and Easync all run on the vendor's own servers, reachable from any device with a browser - a genuine, real convenience worth naming plainly.
- Sellhelm runs locally, as a Windows 10 and 11 program, on a seller's own PC - no phone or Mac version, and no access without that specific machine.
- The trade-off is where a shop's own data actually lives: on a vendor's servers, governed by that company's own retention and access practices, or on hardware the seller directly controls.
- A local program also has no dependency on a vendor's servers staying online, priced the way they are today, or in business at all, five years from now - a real, if easy to overlook, form of independence.
- Neither model is simply correct - a seller who genuinely needs multi-device access has a real reason to prefer a browser tool; a seller who values direct control over their own shop's data has an equally real reason to prefer a local one, and UK data protection law itself has something specific to say about who stays responsible either way.
The genuine convenience of a browser-based tool, named honestly
Checked 26 September 2026: it would be dishonest to pretend a browser-based tool doesn't offer something real that a local program can't match - checking a shop from a phone at the till, from a shared laptop, or from any device with an internet connection, without installing anything specific to that device first. AutoDS, Hustle Got Real and Easync all offer this, and for a seller who genuinely values being able to check their shop from anywhere, it's a real, practical advantage worth taking seriously rather than dismissed.
Where a shop's own data actually lives, in each model
A browser-based tool necessarily stores a shop's data - supplier links, pricing rules, order history - on the vendor's own servers, governed by that company's own data retention and access policies rather than the seller's direct control. This is not a claim that any named competitor handles this irresponsibly; it's simply the structural reality of how a server-hosted tool has to work. Sellhelm's local-PC model is the inverse: a shop's data lives on the seller's own machine, in files the seller can directly access, back up, or move, without a third party's infrastructure sitting between the seller and their own information at any point.
A specific example: how each model handles a buyer's own details
This distinction shows up concretely in how buyer information is actually handled. Our piece on why Sellhelm shows buyer data live and never stores it covers Sellhelm's specific approach: pulling a buyer's name and address directly from eBay at the moment it's actually needed for dispatch, rather than storing it permanently in a database anywhere. A server-hosted platform handling orders across several marketplaces at once, by the nature of that job, typically needs to store buyer and order records more persistently within its own systems to actually function across all the marketplaces it connects to - a reasonable design choice for what it's trying to do, and a genuinely different one from Sellhelm's narrower, single-platform approach.
Who stays legally responsible, either way - checked directly against the ICO's own guidance
Checked 28 September 2026, directly against the ICO's own guide to controllers and processors: a seller using any third-party tool to handle buyer data - server-hosted or local - is, in almost every realistic dropshipping setup, the "controller" of that data under UK GDPR, since the seller decides what data is collected and why, while a software vendor process it on the seller's behalf. The ICO's guidance states this plainly: a controller "must comply with, and demonstrate compliance with, all the data protection principles" and is "also responsible for the compliance of your processor(s)." This matters directly for the choice between a server-hosted and a local tool - a seller using a browser-based platform that stores buyer data on its own servers has, in effect, appointed that platform as a processor acting on the seller's behalf, and remains responsible for that processor's own compliance regardless of whose infrastructure the data actually sits on. A tool that simply reads data live and never stores it at all, as Sellhelm's own approach does, narrows this specific responsibility considerably, since there is no persistent processor-held store of buyer data for the seller to remain accountable for in the first place.
Independence from a vendor's own servers staying online
A less obvious, but genuinely real, consequence of the server-hosted model is that a shop's ability to actually use the tool depends entirely on that vendor's own servers being operational, at whatever price and terms the vendor sets, for as long as the shop keeps needing it. A local program has no equivalent dependency - once installed, it runs on the seller's own hardware regardless of what happens to the company that built it, short of needing a future update the company would otherwise have provided. This isn't a claim that any named competitor is at meaningful risk of disappearing - it's a structural point about which model carries this specific dependency and which doesn't, worth knowing honestly rather than assumed away.
Backups and export, on a seller's own terms
Sellhelm includes daily local backups and a full export function, letting a seller take their entire shop's data with them onto a fresh install or a different machine entirely, on their own schedule and in a format they directly control. A server-hosted tool's own backup and export practices are set by that vendor, and while reputable platforms generally do offer some form of data export, the seller is relying on that company's own tools and policies to actually provide it, rather than holding the data directly themselves from day one.
The honest trade-off, stated plainly both ways
None of the above makes a local program simply "safer" in every respect - a Windows PC that isn't itself backed up, lost to theft or hardware failure, is its own real risk a seller needs to manage directly, where a server-hosted tool's own infrastructure is typically maintained by a team whose full-time job is exactly that. The honest trade-off is not "local is safer" - it's "local puts the seller in direct control of both the responsibility and the data," where a server-hosted tool takes on the operational responsibility in exchange for the seller giving up some of that direct control. Which side of that trade-off a specific seller prefers is a genuinely personal decision, not one this piece can settle for every reader.
Who each model genuinely suits
A seller who travels frequently, manages their shop from multiple devices as a matter of course, or simply values the convenience of checking in from anywhere without a specific machine in hand, has a real, legitimate reason to prefer a browser-based tool. A seller running their shop from one or two specific machines, who values having their own shop's data directly on hardware they control, backed up on their own schedule, with no dependency on a third party's servers to even open the software, has an equally legitimate reason to prefer Sellhelm's local model. Neither preference reflects a wrong understanding of the trade-off - they reflect two different, reasonable sets of priorities.
What happens without an internet connection, on each model
A browser-based tool, by its nature, needs an active connection to the vendor's own servers to do anything at all - a genuine, if usually brief, interruption if a seller's own connection drops or the vendor's servers experience downtime. A local program still runs, and a seller can still open it, review existing drafts and check existing records, even without an internet connection at that exact moment - though actually reading a live supplier price or syncing a change to eBay itself still genuinely needs a connection, since that part of the job depends on reaching an external website either way. The difference is narrower than "works offline entirely" versus "doesn't" - it's that a local program's own interface and existing data remain accessible regardless, where a browser tool's entire interface depends on that connection working at the moment it's opened.
Why per-PC licensing and the local model go together
Sellhelm's per-PC licensing, covered in more depth in our piece on per-PC licensing, explained, is a direct consequence of the local-software model rather than an arbitrary pricing choice layered on top of it. A program installed and running on a specific machine is naturally licensed to that machine, in the same way desktop software has traditionally been sold for decades before browser-based subscriptions became the industry's dominant model. A seller wanting Sellhelm on a second PC - a laptop alongside a desktop, or a second shop entirely - buys a second licence for exactly that reason, the same structural logic that makes a Pair or Crew pack simply more licences at a lower price each, rather than a higher-tier subscription unlocking new capability.
A worked example
A seller running a single, focused eBay furniture shop from one home-office PC, rarely needing to check the shop from anywhere else, weighs the two models honestly. A browser-based tool's any-device convenience is a real capability this seller's own working pattern essentially never uses. Sellhelm's local model, by contrast, means this seller's own shop data - years of supplier history, pricing rules, order records - sits directly on hardware they already own and already back up as part of their normal routine, with no monthly access fee tied to a vendor's own servers staying online. For this specific working pattern, the trade-off this piece has laid out points clearly toward the local model - not because it's universally better, but because it matches how this particular seller actually works.
Questions people ask
Can Sellhelm be accessed from a phone or a second device?
No - it’s a Windows 10 and 11 program that runs on the specific PC it’s licensed to, with no phone, tablet or Mac version, unlike the browser-based tools covered elsewhere in this series.
Where does a shop’s data actually live with a local program?
Directly on the seller’s own PC, in files the seller can access, back up and export on their own schedule, rather than on a third-party vendor’s own servers.
Is a local program safer than a browser-based one?
Not automatically - it shifts responsibility for backups and hardware reliability onto the seller directly, in exchange for direct control over the data, rather than being simply safer in every respect.
Who genuinely benefits from a browser-based, multi-device tool instead?
A seller who checks their shop from multiple devices or travels frequently has a real, practical reason to prefer that model over a single-PC program like Sellhelm.