Comparison

eM Client vs TourOS

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

Head to head
About

eM Client

This app unifies email, calendar, tasks, contacts, and notes into a single, AI-enhanced platform. It offers advanced features typically found on desktop, including instant message translation and robust encryption, for seamless management of multiple accounts on your iPhone and iPad.

Highlights
  • AI-enhanced email drafting and replies
  • Unified inbox for email, calendar, tasks, contacts, and notes
  • Instant message translation
  • PGP and S/MIME encryption
  • Quick import from desktop app
  • Mail-tracking pixel detection
  • Snooze and Undo Send features
Read full description

These features include: • Super easy setup including quick import from the desktop app via QR code • AI Support for replies and email drafting • Emails, calendars, tasks, contacts and notes all in one place • Favorite, Global, and search folders to easily manage multiple accounts • Instant message translation • PGP and S/MIME encryption • Tags and Gmail labels support to sort and color-code your messages • Signatures you can choose from and assign to your accounts • QuickText: snippets of text you can quickly insert into your emails • Templates • Messages grouped into conversations • Advanced privacy options • Mail-Tracking pixel detection • Snooze • Watch for reply • Undo Send • Password protection • Online meetings integration • Cloud storage providers integration • Mobile device management (MDM) support and more

About

TourOS

Features
Read full description

TourOS is the app for tour guides: it brings your calendar, shift schedule, booking details and guest messaging together in one place – synced live with your team's back office. Features at a glance: • Calendar – day, week and agenda views of your tours, filterable by guide and status • Shifts & availability – see your assignments at a glance, manage your own availability • Bookings – guest count, special requests and payment status right at the appointment • On-site check-in – log guest arrivals, status visible to your team in real time • Messages – chat directly with guests about their booking, including photos and file attachments • Push notifications – get notified instantly about new bookings, assignments and messages • Tour reports – quickly document what mattered after each tour • Time off & absences – submit requests and track their status • Payouts – overview of your settled tours and earnings TourOS runs in the background as the central platform for booking, scheduling and guest communication. The app is intended for guides working with a TourOS operator and requires an active account from your employer.

Screenshots

eM Client4 screens
TourOS1 screens

Verdict

The call

The clearest difference is update cadence: eM Client at every 10 days against TourOS's every 4 weeks. eM Client also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

eM Client ships an update every 10 days, TourOS every 4 weeks. The most recent releases landed on October 22, 2026 and October 17, 2026 respectively.

Scorecard2 real differences · 8 level
eM Client versus TourOS: the parameters behind the verdict, then further details
ParametereM ClientTourOS
PriceFreeFree
Rating3.7 (49 ratings) — better—
Positive reviews48.0% of reviews—
Number of ratings49 — better—
Update frequencyEvery 10 days — betterEvery 4 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.4
Further details — not scored
Size178 MB49 MB
Age rating4+4+
DevelopereM ClientMichael Piel

Bugs and requests

eM Client

Reported bugs

4 issues
  • Emails not sending immediately
  • Drafts not visible or editable
  • Inconsistent behavior when switching between folders
  • Trouble signing in to multiple Google accounts

Requested features

6 requests
  • Calendar integration
  • Improved background refresh and sync
  • Custom notification sounds
  • Ability to sort emails by sender
  • More customization options
Show 1 more
  • Actions from notifications (archive, mark as read, etc.)

TourOS

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

eM Client

No in-app purchases

None

TourOS

No in-app purchases

Questions

Is eM Client free?
eM Client is free to download, with no in-app purchases.
Is TourOS free?
TourOS is free to download, with no in-app purchases.
Do eM Client or TourOS have ads?
Neither eM Client nor TourOS shows ads.
Which is updated more often, eM Client or TourOS?
eM Client ships an update every 10 days, and TourOS every 4 weeks. Most recently, eM Client was updated on October 22, 2026 and TourOS on October 17, 2026.

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