# MobiFone eContract vs Sen Kasa

The clearest difference is in-app purchases: MobiFone eContract at none against Sen Kasa's 4. MobiFone eContract also leads on iOS requirement (10.0 vs 16.0). Sen Kasa's advantage is update cadence (every 3 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Sen Kasa sells 4 in-app purchases, starting at $24.99 per month. MobiFone eContract asks for nothing beyond the download.

MobiFone eContract ships an update monthly, Sen Kasa every 3 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | MobiFone eContract | Sen Kasa |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/mobifone-econtract/id1604753922/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free | — |
| Size | 19 MB | 61 MB |
| Requires iOS | **10.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [VietNam Mobile Telecom Service](https://appshunter.io/developer/437730616) | [Ngoc Son Vu](https://appshunter.io/developer/6795590177) |

## What reviewers say

### MobiFone eContract

[App page](https://appshunter.io/ios/app/mobifone-econtract/id1604753922)

Digitally sign and manage contracts and documents with legal validity. This application ensures the legitimacy of digital signatures recognized by Vietnamese law, streamlining business processes.

**Highlights:** Contract signing, Contract template management, Contract type management, Organization management, User management

**Features:** macOS Compatibility

**In-app purchases:** none


### Sen Kasa

[App page](https://appshunter.io/ios/app/sen-kasa/id6795590175)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sen Kasa Silver | $24.99 | per month |
| Sen Kasa Gold | $39.99 | per month |
| Sen Kasa Operations | $39.99 | per month |
| Sen Kasa Operations | $399.99 | per year |


## Frequently asked questions

### Is MobiFone eContract free?

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

### Is Sen Kasa free?

Sen Kasa is free to download, with in-app purchases available.

### Do MobiFone eContract or Sen Kasa have ads?

Neither MobiFone eContract nor Sen Kasa shows ads.

### Which is updated more often, MobiFone eContract or Sen Kasa?

MobiFone eContract ships an update monthly, and Sen Kasa every 3 days. Most recently, MobiFone eContract was updated on October 24, 2026 and Sen Kasa on October 29, 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.*