Comparison

Inbox Zero vs Taac!

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

Head to head
About

Inbox Zero

This email client offers a fast, offline-capable experience for Gmail and Outlook, featuring an AI assistant for managing your inbox. It allows for easy unsubscribing, smart inbox organization, and quick replies.

Highlights
  • AI email assistant
  • Offline access
  • Unsubscribe from senders
  • Split inbox by tabs
  • Quick swipe actions
  • Scheduled sending
  • Undo send
Features
Read full description

Inbox Zero is a fast, native email app for Gmail and Outlook, with an AI assistant built in. FAST, EVEN OFFLINE Your mail is stored on your iPhone, so your inbox opens instantly and stays usable without a connection. Changes sync in the background. SPLIT INBOX Split your inbox into tabs for the mail you care about. Each tab shows its unread count, so you know where to look first. UNSUBSCRIBE IN SECONDS See who keeps emailing you and choose Keep, Auto-archive or Unsubscribe for each sender, one by one or in bulk. Unsubscribing is free. ASK AI Chat with the Inbox Zero assistant from your inbox or any email. Ask about your mail, or tell it how your email should be handled. NEVER MISS A REPLY Get a notification when an email needs your reply, and tap straight into the conversation. TRIAGE WITHOUT FRICTION Swipe to mark done or read, and jump straight to the next email after you archive. Mark a whole list done at once, and choose your own swipe actions. WRITE AND REPLY Reply inline with attachments, photos and dictation. Drafts show up in your list and open right where you left off. Schedule messages with Send later, and undo a send for 30 seconds. ALL YOUR ACCOUNTS Connect several Gmail and Outlook accounts and read them together or one at a time. BUILT FOR IPHONE A Liquid Glass design, emails that stay readable in dark mode, and remote images loaded through a privacy proxy. Inbox Zero requires a paid subscription. New users receive a 7-day free trial. Monthly and annual plans renew automatically unless canceled at least 24 hours before the end of the current billing period. Manage or cancel your subscription in your Apple ID account settings. Privacy Policy: https://www.getinboxzero.com/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Taac!

Features
Read full description

Taac! is the mail client that puts AI to work on your inbox without ever taking the controls away from you. Connect an IMAP/SMTP account — your own domain, Gmail, Outlook, iCloud — and mail arrives sorted: every unread message is triaged, replies are drafted for you, and they wait in a queue until you approve them. FOUR LEVELS OF AUTONOMY You decide how much the AI may do: from suggestions only, up to autonomous sending strictly within the rules and permissions you set. Every automatic action is written to an audit log you can read. WHAT YOU GET • Automatic triage of unread mail by priority and topic • Reply drafts ready to review, with your signature • Approval queue: accept or discard each proposed action with one tap • Rules written in your own words ("archive newsletters from X"), applied before the AI sees the mail • Conversation view gathering Inbox, Sent and Archive in one thread • A dependable outbox: if the network drops, the message stays queued and retries by itself • Scheduled send and snooze • One-tap newsletter unsubscribe • On-device search plus IMAP server search for older mail • Push notifications for the mail that matters • Address book with autocomplete • English and Italian interface, light and dark themes PRIVACY Mailbox credentials live in the system Keychain. Messages stay on the device. Sync between your devices is end-to-end encrypted with a key generated on device that we never transmit. AI features are optional: with no API key configured, no content leaves the device. No ads, no trackers, no profiling. PREMIUM (optional) The AI features can run on Taac!'s own model with a Premium subscription: Basic includes 4 million AI tokens a month, Pro 10 million. It is bought in the app, starts with a 7-day free trial and renews automatically until you cancel it in Settings -> Apple Account. You can instead keep using your own provider API key, with no subscription at all. REQUIREMENTS An existing IMAP/SMTP email account is required. Gmail and accounts with two-factor authentication need an "app password" generated by the provider, not your normal password. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.taacmail.app/privacy

Screenshots

Inbox Zero4 screens
Taac!4 screens

Verdict

The call

The clearest difference is iOS requirement: Taac! at 16.4 against Inbox Zero's 18.0. On price, update cadence, ads and in-app purchases 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. Inbox Zero sells 2 in-app purchases, starting at $19.99 per month and Taac! sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Inbox Zero ships an update weekly, Taac! every 9 days. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.

Scorecard1 real difference · 8 level
Inbox Zero versus Taac!: the parameters behind the verdict, then further details
ParameterInbox ZeroTaac!
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyWeekly — betterEvery 9 days
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhone, iPad — betteriPhone
Requires iOS18.016.4 — better
Further details — not scored
Size35 MB11 MB
Age rating4+4+
DeveloperInbox Zero Inc.Housegram Srl

In-app purchases

2 purchases

Inbox Zero

Subscriptions2
  • Inbox Zero Starter Monthly$19.991 Month
  • Inbox Zero Starter Annual$199.991 Year
4 purchases

Taac!

Subscriptions4
  • Premium Basic7 Days trial$3.991 Month
  • Premium Pro7 Days trial$8.991 Month
  • Premium Basic Yearly7 Days trial$44.991 Year
Show 1 more
  • Premium Pro Yearly7 Days trial$89.991 Year

Questions

Is Inbox Zero free?
Inbox Zero is free to download, with in-app purchases available.
Is Taac! free?
Taac! is free to download, with in-app purchases available.
Do Inbox Zero or Taac! have ads?
Neither Inbox Zero nor Taac! shows ads.
Which is updated more often, Inbox Zero or Taac!?
Inbox Zero ships an update weekly, and Taac! every 9 days. Most recently, Inbox Zero was updated on November 9, 2026 and Taac! on November 10, 2026.

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