Founders tend to buy shipping software once and then not think about it again for two years. That is usually the expensive decision, because the app you choose at 50 orders a month is rarely the one that suits you at 500, and the switching cost feels higher than it is.
Part of the confusion is that "shipping app" describes two different products wearing the same label.
The first job is rate access: connecting to carriers, pulling commercial pricing, and printing a label. The second is order orchestration: syncing sales channels, applying automation rules, batching, and managing exceptions at volume. Most early-stage sellers need the first job done well and pay monthly for the second one anyway.
There is a hard limit worth naming before any comparison starts. No app can find you a cheaper rate from a carrier it does not connect to. That is the carrier-field ceiling, and it caps what rate comparison can do for you regardless of how polished the interface is. An app quoting two carriers and an app quoting five can return prices several dollars apart on the same parcel, with identical software underneath.
We reviewed six ecommerce shipping solutions against both jobs.
How this list is ordered: by what each app costs to start, then by how many carriers it quotes at that price. This is a mechanical sort, not a ranking of quality. The best app for you is the one whose job matches your bottleneck, and that section is at the bottom.
App | Carrier field | Origin support | Cost to start | Primary job |
|---|---|---|---|---|
Rollo Ship | USPS, UPS, FedEx, Canada Post, Purolator | US and Canada | 200 free labels/month, then 5¢ each | Rate access |
Pirate Ship | USPS, UPS | US only | Free, no per-label fee | Rate access |
Shippo | Broad multi-carrier | US-focused | Per-label starter tier | Rate access via API |
Easyship | Global courier network | Multi-country | Free tier with monthly shipment cap | International rate access |
Stallion Express | Canada-origin cross-border services | Canada only | Per shipment, no subscription | Cross-border rate access |
ShipStation | Broad, domestic and international | Multi-country | Subscription only, tiered by volume | Order orchestration |
1. Rollo Ship
Free multi-carrier shipping software for e-commerce sellers in the US and Canada, Rollo Ship pulls live rates from five carriers into a single account: USPS, UPS, FedEx, Canada Post, and Purolator.
It sits first on a cost-to-start sort because the five-carrier field is available on the free tier rather than behind an upgrade. FedEx runs on an account-connection basis, so sellers who already hold a FedEx account bring it in alongside the rest.
The pricing model scales with shipments rather than months. The first 200 labels each month are free. Labels beyond that are 5¢ each, and drop to as low as 1¢ at the VIP tier of Rollo Rewards. A seller printing 350 labels in a month pays $7.50 in software cost. Nothing is charged in a month where nothing ships, which is a real consideration for seasonal sellers whose January looks nothing like their November.
Canadian coverage is the part most US-published roundups skip. Canada Post and Purolator sit in the same account as the US carriers, so a seller in Vancouver shipping domestically and cross-border into the US is working from one label history rather than reconciling two tools. Native iOS and Android apps carry the same feature set as the web version.
Where it is thinner: this is rate access done broadly, not a deep order-orchestration engine. Sellers who need conditional automation rules firing across thousands of orders will find the rules layer lighter than what a dedicated order management tool offers. Sellers who want that breadth of carrier access without a monthly subscription are the better fit.
Job it does well: rate access, across the widest carrier field on this list's free tier.
2. Pirate Ship
Pirate Ship charges nothing. No subscription, no per-label fee, no markup on postage — you pay the carrier's commercial rate and that is the entire transaction.
The carrier field is USPS and UPS, and the origin is the United States only.
For a US seller moving light domestic parcels, that is frequently sufficient, because USPS commercial pricing is often the cheapest option in that weight band anyway. A wider carrier field would not save that seller money; it would just add options they never select.
The ceiling appears when parcels get heavier or destinations get further out, and it appears immediately for anyone shipping from a Canadian origin.
Job it does well: rate access for US-origin domestic parcels at zero cost.
3. Shippo
Shippo is a shipping API with a dashboard attached, rather than the other way around. It supports a broad carrier list and is a common choice for teams embedding label generation into their own checkout or internal tooling.
There is a starter tier priced per label, and a paid subscription tier that removes the per-label fee and adds branded tracking and returns handling.
If you have an engineer, this is often the shortest path from cart to label without writing carrier integrations yourself. If you do not have an engineer, a significant share of what you are evaluating is not addressable by you.
Job it does well: rate access as infrastructure, for teams building rather than buying.
4. Easyship
Easyship is organized around international shipping. It aggregates courier options across a global network and calculates landed cost, including duties and taxes, so the customer sees the real total at checkout rather than a surprise invoice at the door.
A free tier exists with a monthly shipment cap, with paid tiers above it.
Landed-cost calculation is genuinely difficult to build and difficult to replicate. If a meaningful share of your orders cross borders and you are absorbing refused parcels or customs complaints, that visibility has direct margin value.
If your order mix is overwhelmingly domestic, most of the machinery goes unused.
Job it does well: rate access and duty transparency for international order mixes.
5. Stallion Express
Stallion Express handles Canada-origin shipping, with a network of physical branches for drop-off and a concentration on cross-border parcels heading south into the United States.
Pricing is per shipment. There is no subscription.
For Canadian sellers with a branch nearby, the drop-off model removes a step from the daily routine, and cross-border rates into the US are the main reason its users are there.
The limitation is directional. It serves Canadian origin and does not serve US-origin sellers, so a business holding stock on both sides of the border cannot consolidate onto it.
Job it does well: rate access for Canada-origin cross-border volume.
6. ShipStation
ShipStation is the order-orchestration product on this list. It aggregates orders from sales channels into a single queue, applies automation rules, and buys labels across a wide carrier field spanning domestic and international options.
Pricing is subscription-based and tiered by monthly shipment volume, with no permanently free plan.
The automation engine is what you are paying for. Rules that assign services by weight, destination, or SKU, then batch-print in bulk, remove hours of repetitive clicking every week once volume is high enough to generate that clicking in the first place.
Below that threshold, the subscription is a fixed cost purchased against a problem the seller does not yet have.
Job it does well: order orchestration at volume.
Which Shipping Solution Should You Actually Pick?
Match the app to your bottleneck, not to your ambition. If your problem is that labels cost too much, you need rate access and a wide carrier field. If your problem is that processing orders eats your mornings, you need orchestration, and you should expect to pay for it.
A rough threshold: the labor saved by rules-based automation starts outrunning its subscription cost somewhere past a few hundred orders a month, and earlier if your catalogue has awkward weight or dimension variation. Below that, the same money is better left in inventory.
Origin country is the other fork. Sellers shipping from Canada, or from both countries, have a much shorter list of viable options than the marketing copy in this category implies, and it is worth confirming origin support before evaluating anything else.
Who Should Look Elsewhere
Some sellers should not be shopping in this category at all.
If you need warehouse management, pick-and-pack workflows, or multi-location inventory allocation, these are shipping execution tools and will disappoint you. That is a WMS problem.
If you move freight or LTL rather than parcels, most of this list will not quote your loads.
If you ship under roughly 20 orders a month, the native label tools inside Shopify, eBay, or Amazon are probably enough, and rate comparison will not recover the time it costs to set up.
And if you are a US-origin seller whose parcels are consistently small and domestic, a narrow two-carrier tool may serve you better than a five-carrier one, because the extra carriers are options you will never choose.
FAQs
What is the difference between a shipping app and a shipping carrier?
A carrier physically moves the parcel. A shipping app is software that connects to multiple carriers, compares their rates for a given parcel, and generates the label. The app does not deliver anything itself.
Are free shipping apps actually free?
It varies, and the terms are not always visible on the pricing page. Check two things separately: whether the app adds a markup to the carrier's commercial rate, and whether there is a per-label fee on top of the postage.
How much can rate comparison realistically save?
Commercial pricing accessed through shipping software sits well below retail counter rates, and the spread between carriers widens as parcels get heavier. The saving per label is often small; the saving across a year of shipping is not.
Can one account cover both US and Canadian shipping?
Few can, because most shipping apps are built around a single origin country. Rollo Ship covers Canada Post and Purolator alongside the US carriers in one account, which is unusual in this category.
Do I need a thermal label printer to start?
No. Paper labels in an adhesive pouch work fine early on. Thermal printing tends to pay off somewhere around 30 to 50 labels a week, when pouch costs and ink start showing up as a real line item.