Comparison

DocB vs Knockbox

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

DocB

This native documentation app organizes API references for developers. It allows users to import various DocC sources, search them instantly, and save important pages for quick access. Stop switching between browser tabs and get answers faster with a unified reference library.

Highlights
  • Native DocC documentation reader
  • Import custom DocC websites
  • Cross-source search functionality
  • Save bookmarks and collections
  • CloudKit sync across devices
  • Distraction-free browsing
Read full description

DocB is a native documentation app built for developers who work with APIs. Bring the DocC sources you use into one focused library. Search across them instantly, save important pages for later, and keep reference material close wherever you work. Whether you are looking up an endpoint signature, scanning a framework guide, or researching away from your desk, DocB helps you stop bouncing between browser tabs and start getting answers faster. DocB supports Apple Developer Documentation, custom DocC sites, and popular documentation sources, so you can create a reference library that matches your workflow. Key features: - Read DocC documentation in a native app with fast, distraction-free browsing - Add popular documentation sources or your own DocC website - Search across all connected sources and DocC content - Save bookmarks and bookmark collections for quick follow-up - Sync sources and bookmarks with CloudKit - Continue reading across Mac, iPad, and Vision Pro

About

Knockbox

Read full description

Knock once, and your phone buzzes. Knockbox turns one HTTP request into a push notification on your iPhone. Anything that can send a request can reach you: a deploy script, a cron job, a monitoring check, a CI pipeline, or a coding agent that has just finished a long task. If it needs your go-ahead before continuing, it can wait for your answer. curl -d "Build finished" https://your-server/api/v1/send/YOUR_TOKEN THE SERVER IS YOURS Knockbox is the client for a server you control. The server is open source and runs on a VPS, a NAS, or a Raspberry Pi at home. It holds its own Apple push key, so a notification goes from your machine to Apple and then to your phone, without passing through anyone in between. If you would rather not run anything, open knockbox.miramiao.com on your iPhone and you are connected — no sign-up, no password. WHAT A MESSAGE CAN CARRY • A Markdown body with headings, lists, links and syntax-highlighted code. • Images, shown in the notification and kept with the message. • Long text. The body is fetched as the notification lands rather than packed into it, so there is no length limit to work around. • A title, a channel, and an interruption level: quiet, normal, or time sensitive when it has to break through Focus. REPLIES • The sender can attach a set of options, or allow a free-text answer. • Answer from the message itself. Your server posts the reply back to the address the sender gave, signed, and the sender takes it from there. • The sender can set a deadline. After it passes the message reads "Reply window closed" and the server stops accepting — you are never left thinking an answer went through. • A message is answered once, and the answer is the same across your devices. CHANNELS • One token per channel, so a noisy monitor and a personal reminder stay apart. • Muting a channel truly stops it: the mute lives on the server, so nothing is sent at all. • Search your history, mark as read, delete a message, or clear a channel. Deletions are real, on the device and on the server. MORE THAN ONE DEVICE Pair a second iPhone or iPad from a device that is already connected. Both receive everything and share read state. TRY IT WITHOUT A SERVER Demo mode fills the app with example messages and sends a sample notification, so you can see how it works before setting anything up. FREE, AND THAT IS ALL No ads, no analytics, no account with us, no in-app purchase, no subscription. The app is free and the server is open source. Server source code: https://github.com/aichy126/knockbox Public server: https://knockbox.miramiao.com How to send: https://knockbox.miramiao.com/docs Questions: info@miramiao.com

Screenshots

DocB4 screens
Knockbox4 screens

Verdict

The call

The clearest difference is update cadence: Knockbox at daily against DocB's every 4 days. DocB's advantage is device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

DocB ships an update every 4 days, Knockbox daily. The most recent releases landed on September 29, 2026 and October 6, 2026 respectively.

Scorecard2 real differences · 7 level
DocB versus Knockbox: the parameters behind the verdict, then further details
ParameterDocBKnockbox
PriceFreeFree
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 4 daysDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, Mac, Vision Pro — betteriPhone, iPad
Requires iOS18.017.0 — better
Further details — not scored
Size18 MB7 MB
Age rating4+4+
DeveloperMCRICH LLC苗 苗

In-app purchases

None

DocB

No in-app purchases

None

Knockbox

No in-app purchases

Questions

Is DocB free?
DocB is free to download, with no in-app purchases.
Is Knockbox free?
Knockbox is free to download, with no in-app purchases.
Do DocB or Knockbox have ads?
Neither DocB nor Knockbox shows ads.
Which is updated more often, DocB or Knockbox?
DocB ships an update every 4 days, and Knockbox daily. Most recently, DocB was updated on September 29, 2026 and Knockbox on October 6, 2026.

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