OCENS OneMail vs MT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OCENS OneMail
This app allows you to efficiently manage your email accounts, even on slow or expensive connections like satellite phones. It downloads only essential message details first, letting you review and select emails offline before downloading full content, saving time and airtime.
- Low-bandwidth email checking
- Offline email review
- Selective message download
- Compressed and encrypted transfers
- IMAP account support
- Satellite phone compatibility
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OneMail is the companion app for your OCENSMail account. OneMail allows you to keep tabs on your OCENSMail account and any IMAP enabled email account when you are using limited bandwidth connections such a a satellite phone or slower 2g cellular networks that would normally make this impossible. OneMail takes a very unconventional approach to checking your email account through slow or expensive connections. When you use OneMail to check your email, it auto-dials through your satellite link and then downloads the From, Subject and Size of the mails waiting for you in just seconds. It then auto-disconnects from your satellite phone so you aren’t burning unnecessary airtime while you review this summary information. Now that you are offline, scan down the OneMail list of waiting mail to see if any are of pressing or particular interest, swipe or tap on those messages to highlight them, then re-connect with OneMail. This time OneMail will access and quickly download those message before then once again auto-disconnecting. At your leisure you can now freely review the complete message and reply to those emails before reconnecting to send replies and/or look for new mail. OneMail is completely private. Mail transfers are compressed and encrypted. OneMail is compatible with the Iridium GO!, Iridium GO! exec, Iridium Certus and handhelds, Inmarsat and Globalstar handheld satellite phones, Globalstar SatFi, and the Sidekick family of satellite Wi-Fi routers.
MT
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Official app for setting up the Steamrock MT-11 Digital Moon Tracker using NFC.
Screenshots
Verdict
The clearest difference is iOS requirement: MT at 13.0 against OCENS OneMail's 16.0. On price, update cadence, ads and in-app purchases 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.
OCENS OneMail ships an update every 3 months, MT every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | OCENS OneMail | MT |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 36 MB | 17 MB |
| Age rating | 4+ | 17+ |
| Developer | OCENS, Inc. | Steamrock Inc. |
In-app purchases
OCENS OneMail
No in-app purchases
MT
No in-app purchases
