Tandem by BlindShell vs Zerogram
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tandem by BlindShell
Connect with loved ones through text, voice, and video calls. Offers remote control functionality for assistance with a specific phone model, ensuring easy communication and support.
- Text messaging
- Voice messages
- Free calls
- Video calls
- Remote phone control
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Chat & Voice Messages Send text or voice messages effortlessly to stay in touch with your loved ones, no matter where you are. Calls & Video Calls Make free calls or video calls for support or simply to chat with friends and family. Remote Control Provide real-time help by remotely controlling your loved one’s BlindShell phone (with their permission), making it easy to assist with apps or settings.
Zerogram
This is a free, independent Telegram client designed for blind and low-vision users. It offers full compatibility with screen readers, allowing seamless communication through chats, groups, and channels.
- Screen reader compatibility
- Secure login
- Full chat functionality
- Voice message recording
- Media and document sharing
- Message management
- Customizable appearance
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Zerogram is an independent Telegram client designed for blind and low-vision users. Built with Telegram’s official open-source TDLib library, it works with your Telegram account and conversations. VoiceOver labels, hints and actions help you navigate chats, groups, channels and bots; read, reply to, edit and forward messages; send voice messages, photos, videos and files; and use supported calls and live streams. Explore chat folders, search, translation, notification sounds, storage settings and appearance options. Zerogram supports 15 interface languages. The app is free to download. Adding multiple accounts is available as an optional in-app purchase. Zerogram is an independent app and is not the official Telegram application.
Screenshots
Verdict
The clearest difference is review sentiment: Zerogram at 60% against Tandem by BlindShell's 0%. Zerogram also leads on update cadence (every 2 days vs every 2 months). Tandem by BlindShell's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and monetization model 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.
Tandem by BlindShell ships an update every 2 months, Zerogram every 2 days. The most recent releases landed on September 23, 2026 and October 10, 2026 respectively.
| Parameter | Tandem by BlindShell | Zerogram |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.2 (9 ratings) — better |
| Positive reviews | 0.0% of reviews | 60.0% of reviews — better |
| Number of ratings | — | 9 — better |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 55 MB | 191 MB |
| Age rating | 4+ | 17+ |
| Developer | Matapo, a.s. | MERIC KARACA |
Customer experience
Tandem by BlindShell
Zerogram
In-app purchases
Tandem by BlindShell
No in-app purchases
Zerogram
No in-app purchases
