Intuitive Shipping , 421 reviews

Here are the reasons I think Intuitive Shipping is my top 3 apps that I have seen:
1. Stable, accurate and sophisticated
2. The flexible setting fit most of my needs
3. Fast running speed
4. Written by professional and reliable developers
5. Full detailed help menu
6. It keeps adding valuable features
7. It worth more than the price
6. Prompt and high-quality support

It supports live shipping rate too! So I highly recommend it.

We have products that may be small but have a lot of weight. I have used a number of different types of shipping calculation apps over the years with very little luck. We have been using the app for over a year now and it has solved about 90% of the issues we have with calculating shipping rates.
It has a very detailed system for entering in the different boxes and envelopes /soft packages use. You can enter the outer and inner dimensions, maximum weight, empty weight, and cost. This help to get a better shipping calculation and you can add the cost of the shipping material to the shipping price.
You can create shipping "Scenarios" for all different types of shipping. We ship out mainly FedEx Ground, but also sometimes FedEx Freight, and on a few small flat items USPS first class mail. We ship to domestics locations and international. We can create "Scenarios" to accommodate our products. Filtering out some products that are only shipped domestically. Also some products to ship out via USPS first class mail or FedEx it they are ordered with other products. The "Smartboxing" also figures out packaging very well. You can also add on handling costs and have the rate rounded up or down.
Our products are not in retail packaging and are shipped out as parts. I would suggest adding an addition product dimensions to accommodate for packing material.
Most of the app is very easy to figure out and to work with. I have had a few little things I have had issue with and the tech support have been very helpful.
This has been one of they easiest and most comprehensive shipping rate calculating apps I have worked with. It has many features and it seems to be well thought out for different types of shipping.

This app makes ANYHTING we need for shipping charges possible. Friendly support with quick response time and viable answers!

Really good app that helps us with our shipping needs. Plus the technical support is brilliant - very knowledgeable and ultra responsive. Highly recommended.

Great app and great customer support. I like the companies that always work on improving their services and meet their client's needs. Thank you!

This app and its developer are amazing. Intuitive Shipping has been a game-changer for us. We are using it in a custom application, and the support team went above and beyond to take care of us.

By far the best calculated rates shipping app available on Shopify with world class technical support. Highly recommended. Keep up the good work guys

Due to our multiple shipping profile needs, Intuitive Shipping came to the rescue. Their team spent several days with our web developer in helping to get their app up and running perfectly. Now everything is automated with a simple scenario based rule. It took a little bit of getting used to, but now our staff collectively can update products on the fly that triggers the right shipping method every time! Thank you guys! This app is a life saver!

We used this app to manage our relatively complex shipping rates and conditions. When we needed assistance, the Intuitive Shipping team was always there and so quick to jump on a call and help us find ways to fulfill our needs. Their support team is among the best there is. :)

**UPDATE** The owner hopped on a call with me and customer support, immediately migrated new changes to the app, and fixed all of the issues with descriptions, product dimensions, and shipping calculations to mirror the old legacy system. Excellent customer service. While there still isn't a guide to the new interface and how it might impact legacy settings, the personal touch was very helpful, and they made sure the legacy settings remained and weren't overriden. They're also working on additional changes to streamline order packing slips and make it easier for our operational interface.

The update completely screwed up the entire shipping calculation. They updated the app without emailing or communicating to anyone, so now rates are all over the place, and products are not properly categorized with "ship together" or "ship separately" settings. The migration was done EXTREMELY poorly and none of the original settings were maintained for individual products. We had to go back in and manually update all our products which were multi-boxed because we were getting bad rate calculations.

Furthermore, now package dimensions are no longer being populated. That setting was automatically turned OFF, and once it's turned back ON, Intuitive doesn't display dimensions anymore. It just displays the title of the product. They expect you to go in and edit the title of the product with the right box dimensions, even though their app is supposed to "smartbox" everything.