Comparison

TTP vs Inbox Zero

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

Head to head
About

TTP

Features
Read full description

Organizing all activities, components and stake holders involved in an event in a hierarchical manner. Assigning the resources to activities, so that they are utilized in an optimum way, saving time and cost, thereby ensuring users' peace of mind. Also, maintaining a repository of the resources and stake holders, so that they can be utilized for further events, if required.

About

Inbox Zero

This AI-powered assistant helps you manage your email inbox efficiently. It prioritizes important messages, drafts replies in your style, and helps you unsubscribe from unwanted newsletters. Automate email handling with custom rules and stay in control of your communications.

Highlights
  • Prioritize important emails
  • Draft AI-assisted replies
  • Unsubscribe from newsletters
  • Bulk archive emails
  • Create custom automation rules
  • Manage multiple Gmail accounts
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/

Screenshots

TTP4 screens
Inbox Zero4 screens

Verdict

The call

The clearest difference is in-app purchases: TTP at none against Inbox Zero's 2. Inbox Zero's advantage is update cadence (weekly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Inbox Zero sells 2 in-app purchases, starting at $19.99 per month. TTP asks for nothing beyond the download.

UpkeepUpdate frequency

TTP ships an update every 2 months, Inbox Zero weekly. Both last shipped on October 20, 2026.

Scorecard2 real differences ยท 5 level
TTP versus Inbox Zero: the parameters behind the verdict, then further details
ParameterTTPInbox Zero
PriceFreeFree
Update frequencyEvery 2 monthsWeekly โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
Monetizationโ€”Subscription
DevicesiPhoneiPhone, iPad โ€” better
Requires iOS17.6 โ€” better18.0
Further details โ€” not scored
Size7 MB35 MB
Age rating4+4+
DeveloperVARELI TECSOFT PRIVATE LIMITEDInbox Zero Inc.

In-app purchases

None

TTP

No in-app purchases

2 purchases

Inbox Zero

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

Questions

Is TTP free?
TTP is free to download, with no in-app purchases.
Is Inbox Zero free?
Inbox Zero is free to download, with in-app purchases available.
Do TTP or Inbox Zero have ads?
Neither TTP nor Inbox Zero shows ads.
Which is updated more often, TTP or Inbox Zero?
TTP ships an update every 2 months, and Inbox Zero weekly. Most recently, TTP was updated on October 20, 2026 and Inbox Zero on October 20, 2026.

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