33eSIM vs Mars Signal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
33eSIM
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33ESIM是一家专注于跨境电信服务的科技企业，主要通过 eSIM 技术为全球商务及旅游人士提供即时移动5G数据解决方案。
Mars Signal
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Mars Signal helps travelers stay connected before departure with eSIM data plans, physical SIM cards, and SeSIM carrier cards. Browse available destinations and card products, compare package duration and data size, and manage your purchased cards from one mobile app. Mars Signal is designed for users who need reliable connectivity for travel, business trips, long stays, and backup network access. Key features: - Shop travel connectivity products including eSIM, physical SIM, and SeSIM cards. - View package details such as destination, data amount, validity period, and delivery type. - Manage your card assets and check card information in the card wallet. - Access help and account tools from a mobile-first app experience. Mars Signal focuses on simple, practical connectivity for global consumers.
Screenshots
Verdict
The clearest difference is update cadence: Mars Signal at weekly against 33eSIM's monthly. 33eSIM's advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
33eSIM ships an update monthly, Mars Signal weekly. Both last shipped on October 31, 2026.
| Parameter | 33eSIM | Mars Signal |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 26 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | HK GOOD SPEED LIMITED | ONE TREE HILL TECH LIMITED |
In-app purchases
33eSIM
No in-app purchases
Mars Signal
No in-app purchases
