OneMessage vs Call.com
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OneMessage
Send secure, reliable text messages over satellite or cellular connections, saving bandwidth and money. This app ensures private, person-to-person communication, even at sea, with a familiar interface for easy conversation tracking.
- Secure and reliable text messaging
- Works over satellite (Iridium, Globalstar, Inmarsat) and Wi-Fi/cellular
- Saves bandwidth, time, and money
- Person-to-person private messaging
- Message queuing for cost-effective sending
- Threaded conversations
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Text Messaging – On Land or At Sea with OCENS OneMessage With OCENS OneMessage text messaging, you can easily maintain secure, reliable contact with your friends, family, or fleet while saving time, bandwidth, and money. OneMessage enables two-way, private and personal text messaging over your Wi-Fi connection through the Iridium GO! or other Iridium, Globalstar, Inmarsat satellite phones, or through a conventional cellular or Wi-Fi connection. OneMessage is person-to-person, not person-to-machine like other satellite messaging services. OneMessage ensures that texts reach only their intended recipient no matter how many devices are connected to the Wi-Fi, whether on land or at sea. Once you hit send, you can rest assured that your contacts will receive your text. Inbound messages are available for download when you connect to your sat phone, no matter where you are. Streamlined, Simple Onboard Communication Queue your messages using the OneMessage app, and then switch on your sat phone and send in seconds to save costs and minimize bandwidth usage. While you’re connected, OneMessage automatically receives any messages waiting for you on the network. Your messages appear threaded within OneMessage, just like you’d expect so that you can easily keep track of each conversation. Eliminate International Texting Fees for Good Iridium is treated as a foreign country by all cellular carriers. These carriers can charge US$15 per month or US$0.50 per message, and sometimes even apply overage rates when sending SMS messages to an Iridium phone. OneMessage users do NOT need to activate international texting service on their smartphone to send texts. With OneMessage, you get the maximum value from your satellite phone connection economically, while using an interface that feels intuitive and familiar to keep in touch no matter where you travel. Please review our Privacy Policy at http://www.ocens.com/Privacy-Policy.aspx and Terms of Use at http://downloads.ocens.com/terms-of-use.htm.
Call.com
Get a real virtual phone number on your device without needing a new SIM card. Make calls, send texts, and have HD video calls with a dedicated second line for work, travel, or personal use. Manage multiple numbers and stay connected globally.
- Virtual second phone number
- Voice and HD video calls
- SMS messaging
- Manage multiple numbers
- Personalized voicemail
- Call and SMS forwarding
- Availability controls
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Your second phone number in an app. A real virtual number you can use on any device — no SIM cards, no extra phones. Call.com gives you a dedicated second line for work, travel, or personal use. Choose a local number in the US, UK, France, Canada, Mexico, Australia, Austria, Belgium, Finland, and Puerto Rico, with more countries coming soon. VOICE CALLS Make crystal-clear calls to mobiles and landlines worldwide at low rates. Call other Call.com users for free. SMS Send affordable SMS messages to any mobile number in the world. VIDEO CALLS One-to-one or group HD video calls with up to 10 participants. Free between Call.com users. CHAT & VOICE MESSAGES Full-featured chat with support for images, files, emojis, and voice messages. WHO IT'S FOR — Freelancers & Small Business: A dedicated work line to separate business and personal communication. Project a professional image with a local number. — Remote Teams: Shared company credit, flexible billing, and the ability to reassign numbers between team members in one click. — Expats & Digital Nomads: Keep a local number in your home country while living abroad. Friends, family, and banks can reach you without international charges. — International Travellers: Connect over Wi-Fi and avoid expensive roaming fees. — International Callers: Stay in touch with friends and family overseas at affordable rates. — Coaches & Teachers: Communicate with students and clients on a dedicated number with flexible availability settings. — Property Managers & Hosts: A separate line for guest and client inquiries across multiple listings. — Tablet & Laptop Users: Turn any device into a fully functioning phone — no physical SIM required. MANAGE MULTIPLE NUMBERS Add more than one virtual number and manage them all from a single app. Each number comes with its own voicemail, availability schedule, and call controls. FEATURES — Personalized voicemail for each number — Call and SMS forwarding — Advanced availability controls and quiet hours — Block unwanted calls and messages — Send SMS to multiple contacts at once — Synchronized contacts across all your devices — Remote logout for account security — Login activity monitoring — Number porting — transfer an existing number to Call.com LOW INTERNATIONAL RATES Affordable calls and SMS to hundreds of destinations. Transparent pricing visible in the app before you call or send a message. USE ON MULTIPLE DEVICES Your calls, messages, and contacts stay synchronized across your devices. Trusted by over 1,000,000 users worldwide. Built in Europe. For support, contact our team directly in the app or email support@call.com
Screenshots
Verdict
The clearest difference is in-app purchases: OneMessage at none against Call.com's 33. OneMessage also leads on rating (5.0 vs 4.6) and iOS requirement (13.0 vs 16.4). Call.com's advantage is update cadence (every 10 days vs every 4 months) and ratings volume (742 vs 2). On price, ads and device support 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. Call.com sells 32 one-off in-app purchases. OneMessage asks for nothing beyond the download.
OneMessage holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Call.com has 742 ratings behind it against 2, so its average is the more settled of the two.
OneMessage ships an update every 4 months, Call.com every 10 days. The most recent releases landed on June 1, 2026 and September 21, 2026 respectively.
| Parameter | OneMessage | Call.com |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.6 (742 ratings) |
| Positive reviews | — | 37.3% of reviews |
| Number of ratings | 2 | 742 — better |
| Update frequency | Every 4 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 26 MB | 76 MB |
| Age rating | 4+ | 4+ |
| Developer | OCENS, Inc. | Call.com Telecom |
Customer experience
OneMessage
Call.com
Bugs and requests
OneMessage
Not enough reviews yet to summarise bugs or requests.
Call.com
Reported bugs
15 issues- In-app purchase not available
- System server very bad, loading time out
- Cannot log in to account
- Numbers scramble when making calls
- Error: 'sorry something went wrong, please try again' when making calls
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- Logged out and purchased number disappeared after update
- Fails KYC verification without explanation
- Error: 'fetch credit products error'
- App not logging in, says number is wrong
- Internal server error / unable to fetch payment data
- App not opening after migration from Cloud SIM
- Calls cut off after a few seconds
- Slow connection and calls disconnect after a few minutes
- Cannot get through to numbers
- Dropped SMS messages
Requested features
5 requests- Add ability to send/receive pictures and video
- Add more country options for numbers
- Improve UI for handling multiple numbers
- Allow default number selection
- Enable in-app purchases via App Store
In-app purchases
OneMessage
No in-app purchases
Call.com
- Add £1.39$1.99
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