Comparison

Bubble 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

Bubble Mail

Features
Read full description

Bubble makes Gmail feel less like an inbox and more like a conversation. See every Gmail thread as a clear, chronological exchange while correspondents continue to receive ordinary email. Built for clarity • Gmail thread IDs keep conversations correctly separated • Subjects stay available without dominating the screen • Exact visible recipients are shown before you send • Cleaned message text can always be reversed to the complete original • Search and filters help you find unread, starred, sent, file, and group conversations Clear old clutter safely with Bubble Sweep • Choose Promotions, Social, Updates, or Forums • Filter by age • Protect starred, important, or attachment mail • Preview the exact Gmail search and count before changing anything • Archive by default or move exact matches to recoverable Trash • Leave the Sweep screen or switch apps while work continues on supported iOS versions • Resume from a protected on-device checkpoint if iOS pauses the task • Undo completed changes Private by design Bubble processes and caches mailbox content on your iPhone. It blocks remote images, tracking pixels, scripts, forms, and active HTML by default. Bubble does not sell mailbox data or add advertising or analytics to the mail path. Disconnecting removes the selected account’s Bubble data from the device while the original mail stays in Gmail. Bubble Plus Optional purchases unlock up to eight Gmail accounts, more pins, private templates and signatures, saved triage views, an attachment center, expanded offline history, custom swipe actions, and additional themes, effects, sounds, and app icons. Purchases are handled by Apple. A Gmail account is required for live mail. People using other email apps do not need Bubble. Support: contactenvisiondigital@gmail.com Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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

Bubble Mail3 screens
One Big Keyboard4 screens

Verdict

The call

Bubble Mail and One Big Keyboard are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Bubble Mail sells 5 in-app purchases, starting at $2.99 per month and One Big Keyboard sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Bubble Mail versus One Big Keyboard: the parameters behind the verdict, then further details
ParameterBubble MailOne Big Keyboard
PriceFreeFree
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone
Requires iOS18.017.0 — better
Further details — not scored
Size12 MB3 MB
Age rating4+4+
DeveloperETHAN PEALHello Good Day LLC

In-app purchases

5 purchases

Bubble Mail

Subscriptions2
  • Bubble Plus Monthly$2.991 Month
  • Bubble Plus Annual$24.991 Year
One-time3
  • Playful Theme Pack$9.99
  • Founding Supporter$14.99
  • Bubble Plus Lifetime$49.99
1 purchases

One Big Keyboard

One-time1
  • One Big Keyboard Pro$4.99

Questions

Is Bubble Mail free?
Bubble Mail is free to download, with in-app purchases available.
Is One Big Keyboard free?
One Big Keyboard is free to download, with in-app purchases available.
Do Bubble Mail or One Big Keyboard have ads?
Neither Bubble Mail nor One Big Keyboard shows ads.

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