
Nirvana
Mindwtr
Everdo
Sunsama
Todoist
Google Tasks
OmniFocus
A complete GTD system with guided weekly and daily reviews, on iPhone, iPad, Mac, Android, Windows and the web.

Mailflow.sh
Stackmail is a webmail service whereby you can log in to your emails from any browser at any time!
Which is more popular?
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | relaygtd.com | stackmail.com |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from Switzerland · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Relay is a task, project and goal manager built for Getting Things Done. Capture anything into an Inbox, clarify each item with a step-by-step wizard, and see only the next actions that fit where you are, the time you have and your energy. The weekly review is a guided sequence of twelve steps,...
No description of StackMail yet.
What each product offers, as listed by its team.


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


No analysis of Relay GTD yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Relay GTD and StackMail.
Relay GTD's answer
Relay is built only for Getting Things Done, and it runs the whole method on every device: native apps for iPhone, iPad, Mac, Android and Windows, plus the web. The weekly review is a guided twelve-step sequence rather than a reminder to review, the Clarify wizard asks the GTD questions one item at a time, and projects link up to areas, goals, vision and purpose. Most GTD apps either run only on Apple devices or leave the method for you to build out of lists and tags.
Relay GTD's answer
If your devices are not all Apple, Relay gives you one GTD system across Windows, Android and the Apple apps. If you keep skipping the weekly review, Relay walks you through it step by step. It syncs both ways with Google Tasks, Microsoft To Do, Todoist, Notion and Linear, and with Apple Reminders on Apple devices, so the apps you share with other people can stay as ways in. Everything lands in the Inbox first and nothing is filed for you. If you want a free plan, a one-time price or team features, other apps will suit you better.
Relay GTD's answer
People who practise Getting Things Done, or want to, and use more than one kind of device: a Windows PC at work and an iPhone, or an Android phone and a Mac. Many have tried GTD in a general task app and found themselves maintaining the system instead of using it. Relay is for individuals; it has no shared lists or team features.
Relay GTD's answer
Relay is built by one developer in Switzerland. The best-known GTD apps run only on Apple devices, and the cross-platform ones leave the method for you to assemble from lists and tags. Relay set out to be a complete GTD system that works the same on every device, with the weekly review built in. It was released in 2026, on the web first, then on Android, iPhone, iPad, Mac and Windows.
Relay GTD's answer
Flutter and Dart for the apps on all six platforms from one codebase. Firebase (Firestore, Authentication, Cloud Storage and Hosting) and Cloud Functions in TypeScript, all in Google Cloud's Zurich region. Swift for the Apple widgets and share extension, and Kotlin for the Android widgets. RevenueCat with the App Store, Google Play and Stripe for subscriptions, Mailgun for email to Inbox, and Google's Gemini API for the optional AI prompts.
Share your experience with using Relay GTD and StackMail. For example, how are they different and which one is better?
When comparing Relay GTD and StackMail, you can also consider the following products.


A self-hosted, unified webmail client. Connect multiple IMAP/SMTP accounts and manage them all in one clean interface.
Compare Mailflow.sh to Relay GTD or StackMail:

A complete Getting Things Done (GTD) productivity system for desktop and mobile. - dongdongbh/Mindwtr
Compare Mindwtr to Relay GTD or StackMail:



Todoist is a to-do list that helps you get organized, at work and in life.
Compare Todoist to Relay GTD or StackMail: