Comparison

Superhuman Mail vs One Big Keyboard

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

Head to head
About

Superhuman Mail

This email application streamlines inbox management with AI-powered drafting and summarization. It helps users prioritize important messages, schedule emails for optimal delivery, and collaborate with teams through shared email views and integrated CRM tools. Save time and improve responsiveness with advanced features.

Highlights
  • AI email drafting
  • Automatic email summarization
  • Customizable inbox triage
  • Scheduled email delivery
  • Email sharing and commenting
  • Calendar integration
  • CRM integrations (HubSpot, Salesforce)
Features
Read full description

Superhuman Mail is the most productive email app ever made. Designed to help you fly through your inbox, be more responsive to what matters most, and collaborate faster than ever before, Superhuman Mail helps teams on Gmail and Outlook save 4+ hours per person each week. FLY THROUGH YOUR INBOX 2X FASTER Write better and faster with AI that matches your unique style for each person. Get draft replies on every email that needs a response, ready to edit and send. Turn your thoughts into polished emails in seconds with Write with Voice. Stay a step ahead with an automatic 1-line summary above every conversation. Automate phrases and entire emails with Snippets. BE MORE RESPONSIVE TO WHAT MATTERS MOST Automatically triage incoming email with customizable inbox splits, so you can always focus on what matters most. Avoid the clutter for good with Auto Archive. Never let a follow-up slip, with automatic reminders to reply. Send emails when they're most likely to be opened, so you land at the top of your recipient's inbox at just the right time. COLLABORATE FASTER THAN EVER BEFORE Share a live view of any email, and add comments for your team—no need to repeatedly screenshot, forward, or bcc. See your calendar without leaving your inbox. Get full context on your customers and deals with HubSpot and Salesforce directly integrated. Connect all your Gmail and Outlook accounts to AI tools like Claude and ChatGPT via the Superhuman Mail MCP. Teams save 20 million hours every single year with Superhuman Mail. https://superhuman.com/terms

About

One Big Keyboard

Features
Read full description

One Big Keyboard is not a typical keyboard — it is a search tool that lives on your keyboard. It puts Google-style search operators one tap away, in any app, so you find exactly what you're looking for instead of scrolling past what you're not. THE PROBLEM Search engines are powerful, but only if you speak their language: site:, filetype:, intitle:, "exact match", -exclude. Almost nobody types these by hand — they're fiddly, easy to mistype, and hard to remember. THE FIX Tap a chip and the operator drops in, cursor already in place. No syntax to memorize, no colons to hunt for. Build a precise query in seconds, right where you're already typing. WHAT MAKES IT DIFFERENT • An operator chip row over a full QWERTY — the operators you use most, always one tap away • Swipeable operator pages: site targeting, file types, exact match, exclusions, and the full power set • Templates — save a reusable pattern like "site: [pick] filetype: [pick] [keywords]" and fill the blanks with taps • "Describe a search" — type plain English, get the right operator string, built entirely on-device • Saved searches, custom operators, and custom pages — make it yours OPERATORS BUILT IN • site: — search inside one website • filetype: — find PDFs, slides, spreadsheets • "exact phrase" — match words exactly • -exclude — drop results you don't want • intitle:, inurl:, OR, before:/after:, related:, and the rest MADE YOURS • Color themes — recolor the whole keyboard, or mix your own • Seven key-click sounds, from a classic tock to a mechanical click • Sync your operators, templates, and theme across devices through your own private iCloud PRIVATE BY DESIGN No ads. No tracking. Nothing you type ever leaves your device — the keyboard has no networking code at all. Full Access is used only to save your own setup to your device. FREE FOREVER The keyboard and its core operators are free, always. One-time Pro unlocks custom operators, templates, saved searches, color themes, extra sounds, and iCloud sync. Works with Google and any search engine that supports operators like site: and filetype:. Turn your keyboard into a search tool. Find what you're actually looking for.

Screenshots

Superhuman Mail4 screens
One Big Keyboard4 screens

Verdict

The call

The clearest difference is in-app purchases: Superhuman Mail at none against One Big Keyboard's 1. One Big Keyboard's advantage is iOS requirement (17.0 vs 26.0). On price, ads and device support 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. One Big Keyboard sells 1 one-off in-app purchase. Superhuman Mail asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Superhuman Mail versus One Big Keyboard: the parameters behind the verdict, then further details
ParameterSuperhuman MailOne Big Keyboard
PriceFreeFree
Rating4.6 (3.8K ratings) — better—
Positive reviews41.1% of reviews—
Number of ratings3.8K — better—
Update frequencyWeekly—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS26.017.0 — better
Further details — not scored
Size101 MB3 MB
Age rating12+4+
DeveloperSuperhuman LabsHello Good Day LLC

Bugs and requests

Superhuman Mail

Reported bugs

4 issues
  • Login issues and account activation problems
  • Emails not loading or syncing properly
  • Formatting issues in email threads
  • Crashes and freezes on various devices

Requested features

5 requests
  • Unified inbox for multiple accounts
  • Better calendar integration
  • More customization options
  • Improved mobile app experience
  • Table support in email composition

One Big Keyboard

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Superhuman Mail

No in-app purchases

1 purchases

One Big Keyboard

One-time1
  • One Big Keyboard Pro$4.99

Questions

Is Superhuman Mail free?
Superhuman Mail is free to download, with no in-app purchases.
Is One Big Keyboard free?
One Big Keyboard is free to download, with in-app purchases available.
Do Superhuman Mail or One Big Keyboard have ads?
Neither Superhuman Mail nor One Big Keyboard shows ads.

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