
Journey
Daylio
Penzu
Evernote
REFLECTLY
Stoic.
Diaro
A simple journal application for the Mac, iPhone, and iPad. AboutTo learn more about Day One, see these two excellent reviews . PublishPublish is not available in Day One 2.

Keyforge.dev
Keygen
Cryptlex
LicenseSpring
SLASCONE
Signal Lynx - Key Commander
Vyoma SaaS License Management
Create, implement, manage, and sell software licenses—with an API, 8 SDKs, a built-in Store, and 0% commission.

Which is more popular?
Based on our record, Day One seems to be more popular. It has been mentioned 32 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | dayoneapp.com | permitcore.dev |
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| Company | Startup from the United States | — |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Day One yet.
PermitCore is a software licensing platform for independent developers and software teams. It covers the complete create → implement → sell workflow in one place. Teams can create and manage license keys, devices, activations, entitlements, expiration, revocation, subscriptions, and offline or...
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
No analysis of PermitCore.dev yet.
Walkthroughs and reviews on video.
Day One Journal App Review | all features, pricing and opinions
More videos
Presentation
More videos
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Day One and PermitCore.dev.
PermitCore.dev's answer:
PermitCore gives software teams one complete path from creating licenses to implementing licensing and selling their product. Developers can generate and manage licenses, integrate them through the REST API or SDKs, and sell licenses directly through a built-in Store without paying PermitCore a commission. It also supports online and offline licensing, floating and node-locked licenses, device limits, entitlements, subscriptions, customer and reseller portals, and Stripe automation. Underneath that workflow is a security model where license keys are encrypted in the browser before storage and usable keys are never persisted in plaintext. A permanent free plan is available for indie developers.
PermitCore.dev's answer:
Choose PermitCore when you want one platform for the full licensing lifecycle instead of several disconnected tools. You can create and manage licenses, implement licensing through the REST API or SDKs, and sell licenses directly through a built-in Store. PermitCore takes no commission on those software sales. It also covers device management, online and offline use, floating seats, entitlements, subscriptions, customer and reseller portals, and Stripe automation. Browser-side encryption keeps usable license keys out of plaintext storage. PermitCore is EU-hosted, supports Enterprise self-hosting, includes a permanent free plan, and gives every paid plan a three-month free trial.
PermitCore.dev's answer:
PermitCore is primarily for indie developers, SaaS founders, small software teams, agencies, and established software vendors that want one complete path from creating licenses to implementing licensing and selling the finished product. Teams can create and manage licenses, integrate them through the REST API or SDKs, and then sell licenses directly through the built-in PermitCore Store without paying PermitCore a commission on those sales. It supports desktop applications, APIs, developer tools, plugins, and other paid software, with online, offline, floating, subscription, metered, and perpetual licensing. The permanent free plan helps developers get started, while larger teams can grow into reseller management, self-hosting, and custom roles.
PermitCore.dev's answer:
PermitCore started from a problem we kept running into while building our own software. Adding licensing looked simple at first, but it quickly became another product to maintain: secure key storage, validation APIs, device limits, offline use, subscriptions, customer access, payments, and support all needed their own infrastructure. We built PermitCore so developers could handle that complete journey in one place: create and manage licenses, implement them through an API or SDK, and sell them directly through a built-in Store with no commission taken by PermitCore. What began as an internal solution became a developer platform designed to let other teams focus on the software they actually want to build.
PermitCore.dev's answer:
PermitCore is built on .NET 10. The backend uses ASP.NET Core, Entity Framework Core, and PostgreSQL, while the administration panel and public website use Blazor WebAssembly. Valkey handles caching and distributed coordination, and the platform is deployed with Docker and Nginx. Stripe powers subscription and Store payment automation. For licensing security, PermitCore uses established cryptographic primitives including AES-256-GCM for browser-side encryption, HMAC-SHA256 for validation, and Argon2/PBKDF2 where appropriate for key derivation and credential protection. Client SDKs are available for .NET, Node.js, Python, Java, C++, and PHP.
PermitCore.dev's answer:
PermitCore is an early-stage startup, and we do not publish customer names without their explicit permission. Our current users include indie developers, SaaS founders, agencies, and software vendors using PermitCore to create licenses, integrate licensing into their products, and sell licenses through their own built-in Store.
Share your experience with using Day One and PermitCore.dev. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


I have been using Day One since it was in beta. I am a writer and digital content specialist so I do a lot of writing. Day One has grown in capability and beauty since its inception -- I use it more and more everyday....
Perhaps Day One's best feature is the ability to customize multiple reminders. Most other journal apps only send you one reminder during the day. But with Day One, you can get prompted to write, say, when you start...
For a journaling app with a beautiful design and basic features, the Day One journal is an excellent option. This digital journaling app is easy to use but doesn’t scrimp when it comes to useful tools that make...
We have no reviews of PermitCore.dev yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Well done! it’s cross platform. I can see this be used as a geek-friendly Day One [1]. [1] https://dayoneapp.com/. - Source: Hacker News / over 2 years ago
Have you tried dayoneapp.com - its been a long time since I used it, it's more of an iOS app than Windows but I think it works on the web. Source: almost 3 years ago
I journal on and off but I find it difficult to get myself to make it stick as a habit. Physical journaling is tough sometimes because I'm not home etc etc... But I'm thinking of trying out the Day One journal. Source: over 3 years ago
Tracking PermitCore.dev since Sep 2026.
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A dead-simple software licensing API built for developers
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Keep all of your thoughts in one place using Penzu. The app is similar to a journal that you might write in but with a few modern touches that allow you to do everything from sending messages to decorating the pages.
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Cryptlex is an IT Management software, designed to help you maximize the revenue potential of your software by protecting you against software piracy.
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