eM Client vs TourOS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
eM Client
Manage emails, calendars, tasks, contacts, and notes efficiently in one application. Features AI assistance for drafting and replying, robust security with PGP and S/MIME encryption, and instant message translation. Offers advanced privacy options and seamless integration with cloud storage and online meetings.
- Unified inbox for emails, calendars, tasks, contacts, and notes
- AI-powered email drafting and reply assistance
- PGP and S/MIME encryption for secure communication
- Instant message translation
- Advanced privacy and mail-tracking pixel detection
- Integration with cloud storage and online meetings
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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
TourOS
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
eM Client ships an update every 10 days, TourOS every 4 weeks. Both last shipped on November 13, 2026.
| Parameter | eM Client | TourOS |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (51 ratings) — better | — |
| Positive reviews | 47.5% of reviews | — |
| Number of ratings | 51 — better | — |
| Update frequency | Every 10 days — better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 179 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | eM Client | Michael 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
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- Actions from notifications (archive, mark as read, etc.)
TourOS
Not enough reviews yet to summarise bugs or requests.
In-app purchases
eM Client
No in-app purchases
TourOS
No in-app purchases









