1Sim Connect vs Calls2Go
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
1Sim Connect
Make free calls and send free SMS messages to any OneSimCard phone worldwide. Requires a simple activation by the OneSimCard recipient. Enjoy cost-free communication with an internet connection.
- Free calls to OneSimCard phones
- Free SMS to OneSimCard phones
- Requires internet connection
- Activation by recipient needed
- Global communication
Read full descriptionHide full description
OneSimCard Connect allows you to make calls to a OneSimCard phone at no cost. All you need is an internet connection and you can call to a OneSimCard phone for FREE anywhere in the world. Calling to OneSimCard for free requires a simple activation of this feature by OneSimCard Customer you will be calling to. This is done from My SIM Cards menu of OneSimCard.com. The app also lets you send free SMS text messages to a OneSimCard phone. These SMS text messages are free not just for the sender, but also for the receiver! What's better than free?
Calls2Go
Read full descriptionHide full description
Stay connected with Calls2Go, the comprehensive calling and SMS app that ensures you can reach anyone, anywhere, at any time. Whether you need to make high-quality voice calls or send instant SMS messages, Calls2Go provides a seamless, reliable, and cost-effective solution for all your communication needs.
Screenshots
Verdict
The clearest difference is update cadence: Calls2Go at every 3 days against 1Sim Connect's every 3 months. 1Sim Connect's advantage is iOS requirement (6.1 vs 15.0). 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.
1Sim Connect ships an update every 3 months, Calls2Go every 3 days. The most recent releases landed on November 1, 2026 and October 27, 2026 respectively.
| Parameter | 1Sim Connect | Calls2Go |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 6.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 15 MB | 38 MB |
| Age rating | 4+ | 17+ |
| Developer | Belmont Telecom, Inc. | Robert Galapo |
In-app purchases
1Sim Connect
No in-app purchases
Calls2Go
No in-app purchases
