eM Client vs TourOS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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. The most recent releases landed on October 22, 2026 and October 17, 2026 respectively.
| Parameter | eM Client | TourOS |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (49 ratings) — better | — |
| Positive reviews | 48.0% of reviews | — |
| Number of ratings | 49 — 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 | 178 MB | 49 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









