eM Client vs ICOS PLS
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
ICOS PLS
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ICOS (Industrial Control & Observation System) by PLS is a secure monitoring platform for industrial equipment and distributed IoT edge devices. It gives authorized PLS Automation GmbH customers centralized access to live and historical plant data. Configurable dashboards make operational information easy to understand. Nine widget types - from line, bar and area charts to KPI cards, gauges, status indicators and statistics cards - turn plant data into clear, actionable insights. Configurable alarm rules detect threshold events and connection loss. Multi-level escalation can notify responsible teams sequentially or simultaneously, while push notifications provide immediate updates on important events. Live alarm status updates help teams coordinate their response. Key features: - Live and historical plant data visualization - Nine configurable dashboard widget types - Threshold and connection-loss alarm rules - Multi-level sequential or simultaneous escalation - Instant push notifications and live alarm updates - Two-factor authentication (TOTP) and fine-grained user permissions ICOS is a B2B application for authorized PLS Automation GmbH customers who monitor industrial equipment, facilities and distributed installations. An active ICOS customer account is required to use the app.
Screenshots
Verdict
eM Client and ICOS PLS are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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, ICOS PLS every 5 days. The most recent releases landed on October 27, 2026 and October 22, 2026 respectively.
| Parameter | eM Client | ICOS PLS |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (48 ratings) — better | — |
| Positive reviews | 48.0% of reviews | — |
| Number of ratings | 48 — better | — |
| Update frequency | Every 10 days | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 178 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | eM Client | at.pls.icos |
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.)
ICOS PLS
Not enough reviews yet to summarise bugs or requests.
In-app purchases
eM Client
No in-app purchases
ICOS PLS
No in-app purchases









