# KEYTECH vs Viettel Tammi

The clearest difference is rating: Viettel Tammi at 2.6 against KEYTECH's 1.0. Viettel Tammi also leads on ratings volume (220 vs 1) and update cadence (every 3 days vs fortnightly). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Viettel Tammi holds the better App Store score, 2.6 against 1.0. That said, the two scores are not equally well evidenced: Viettel Tammi has 220 ratings behind it against 1, so its average is the more settled of the two.

KEYTECH ships an update fortnightly, Viettel Tammi every 3 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | KEYTECH | Viettel Tammi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/keytech/id6474772049/reviews) | **[2.6 (220 ratings)](https://appshunter.io/ios/app/viettel-tammi/id6749427319/reviews)** |
| Number of ratings | 1 | **220** |
| Positive reviews | — | 13.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | — | Ad-supported |
| Best chart rank | — | **#85** |
| Size | 69 MB | 432 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bach Tuan Anh](https://appshunter.io/developer/1570579656) | [Viettel Telecom](https://appshunter.io/developer/365850426) |

## What reviewers say

### KEYTECH

[App page](https://appshunter.io/ios/app/keytech/id6474772049)

**Features:** macOS Compatibility

**In-app purchases:** none


### Viettel Tammi

[App page](https://appshunter.io/ios/app/viettel-tammi/id6749427319)

**Currently charting:** #85 Top Free · Business (US App Store)

This app simplifies daily life by integrating essential services like telecommunications, health, travel, and education. It offers convenient family utilities such as bill payments and personalized shopping with exclusive deals. Connect with others through its built-in call, chat, and meeting features.

**Highlights:** Smart telecommunications management, Integrated health, travel, and education services, Family utility bill payments, Personalized shopping and deals, OTT communication features (call, chat, meeting), User-friendly interface

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is KEYTECH free?

KEYTECH is free to download, with no in-app purchases.

### Is Viettel Tammi free?

Viettel Tammi is free to download, with no in-app purchases.

### Which has better reviews, KEYTECH or Viettel Tammi?

Viettel Tammi is rated higher. KEYTECH averages 1.0 out of 5 from 1 ratings, while Viettel Tammi averages 2.6 from 220 ratings.

### Do KEYTECH or Viettel Tammi have ads?

Neither KEYTECH nor Viettel Tammi shows ads.

### Which is updated more often, KEYTECH or Viettel Tammi?

KEYTECH ships an update fortnightly, and Viettel Tammi every 3 days. Most recently, KEYTECH was updated on October 24, 2026 and Viettel Tammi on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*