# Otto: AI Email & Calendar — Replies, Summaries & Follow-Up

> Replies, Summaries & Follow-Up (iPhone/iPad app by Arghyadeep Karmakar.)

- Source: https://appshunter.io/ios/app/otto-ai-email-and-calendar/id6790373276 (this page in markdown: same URL + `.md`)
- Developer: [Arghyadeep Karmakar](https://appshunter.io/developer/6790373278)
- Category: Productivity, Business
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 12 MB
- Languages: English
- Released: 2026-08-06
- Data updated: 2026-11-10

## What is Otto?

Bring your Gmail and Outlook inboxes into Otto. Catch important messages, prepare replies and manage follow-ups with an AI assistant. You review important actions before they happen.

FIND WHAT NEEDS YOU
Ask Otto to summarize your inbox, surface important messages and help you take the next step.

REVIEW YOUR REPLY
Prepare a reply in plain English. Read and edit the draft before you approve sending it.

KEEP FOLLOW-UPS MOVING
Snooze messages, schedule sends and set follow-up reminders. Set up briefs and digests to fit your routine.

GMAIL AND OUTLOOK
Connect supported Google and Microsoft mailboxes. Use your mail, calendar, tasks and notes on iPhone and iPad. Provider support and available actions can differ; work or school accounts may require administrator permission.

START FREE
Read and manage one connected mailbox, with limited AI usage. Explore sample data before connecting an account.

PLUS AND PRO
Paid plans add more connected accounts and higher AI allowances. Pro includes additional advanced assistant features. AI usage is metered and subject to plan limits; the app shows your current allowance and available plans before purchase. Multiple connected accounts require a paid plan.

YOUR CHOICE, YOUR CONTROL
Check drafts and important actions before approving them. Review the privacy policy for how connected account data and AI requests are handled.

Subscriptions renew automatically unless canceled through your store account. Prices and available offers are shown in the app before purchase.

Privacy: https://ottomail.app/privacy
Terms of Use (EULA): https://ottomail.app/terms

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Otto Plus | $6.99 | per month |
| Otto Plus | $55.99 | per year |
| Otto Pro | $19.99 | per month |
| Otto Pro | $159.99 | per year |
| Otto Plus | $1.99 | per 7 days |
| Otto Pro | $5.99 | per 7 days |


## Is Otto safe?

Not enough ratings yet to assess Otto.

## Is Otto legit?

Otto: AI Email & Calendar appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Otto is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.2.7 — 2026-11-09

Small fixes under the hood. Most of Otto updates on its own, so you already have the newest features.

### 1.2.6 — 2026-10-19

Clearer setup when you connect Gmail or Outlook, plus reliability fixes.

### 1.2.4 — 2026-10-09

Improved sign-in reliability and refreshed App Store previews.

### 1.2.3 — 2026-10-02

Smoother sign-in, more reliable assistant replies after you switch apps, and stability fixes.

### 1.2.2 — 2026-09-26

Improved Google and Outlook sign-in on iPhone and iPad, with clearer recovery if the sign-in window closes early. More helpful error messages and fixes for initial loading. Includes iPad support, improved phone layouts and the iOS 27 startup fix.

## Apps similar to Otto

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Emailligent: AI Email Search](https://appshunter.io/ios/app/emailligent-ai-email-search/id6795404757) | — | Free | Productivity |
| [LifeOps Assistant](https://appshunter.io/ios/app/lifeops-assistant/id6793183244) | — | Free | Productivity |
| [Kimpa](https://appshunter.io/ios/app/kimpa/id6777559818) | — | Free | Productivity |
| [TaskPort: Tasks for AI Agents](https://appshunter.io/ios/app/taskport-tasks-for-ai-agents/id6791870274) | — | Free | Productivity |
| [Vane: AI Executive Assistant](https://appshunter.io/ios/app/vane-ai-executive-assistant/id6777098808) | — | Free | Productivity |
| [Thelemail](https://appshunter.io/ios/app/thelemail/id6784469611) | — | Free | Productivity |

## More apps by Arghyadeep Karmakar

- [Trotlings: Walk Pet & Friends](https://appshunter.io/ios/app/trotlings-walk-pet-and-friends/id6820989637)
- [Pawhold: Shared Pet Care Log](https://appshunter.io/ios/app/pawhold-shared-pet-care-log/id6820989648)
- [Pointhouse: Game Scorekeeper](https://appshunter.io/ios/app/pointhouse-game-scorekeeper/id6820990154)
- [Dawnmates: Wake Up Early](https://appshunter.io/ios/app/dawnmates-wake-up-early/id6820990249)

All apps by Arghyadeep Karmakar: https://appshunter.io/developer/6790373278

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-10.*