# Контур.Экстерн vs 1С

The clearest difference is update cadence: Контур.Экстерн at every 6 weeks against 1С's every 3 months. 1С's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, ads and in-app purchases there is nothing between them.

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

Контур.Экстерн ships an update every 6 weeks, 1С every 3 months. The most recent releases landed on September 19, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Контур.Экстерн | 1С |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/id1462879472/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 65.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free | — |
| Size | 89 MB | 119 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SKB Kontur](https://appshunter.io/developer/417000920) | [1C-SOFT LIMITED LIABILITY COMPANY](https://appshunter.io/developer/1188302931) |

## What reviewers say

### Контур.Экстерн

[App page](https://appshunter.io/ios/app/id1462879472)

Manage your reporting and stay updated on tax and government notifications from your phone. Track report statuses, receive alerts for requirements, and communicate with support 24/7.

**Highlights:** Reporting calendar and deadlines, Real-time report status monitoring, Notifications from tax and pension authorities, View FNS and Rosstat reports, Manage tax authority requirements, 24/7 technical support chat

**Features:** macOS Compatibility

**In-app purchases:** none


### 1С

[App page](https://appshunter.io/ios/app/1/id6670476914)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Контур.Экстерн free?

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

### Is 1С free?

1С is free to download, with no in-app purchases.

### Do Контур.Экстерн or 1С have ads?

Neither Контур.Экстерн nor 1С shows ads.

### Which is updated more often, Контур.Экстерн or 1С?

Контур.Экстерн ships an update every 6 weeks, and 1С every 3 months. Most recently, Контур.Экстерн was updated on September 19, 2026 and 1С on September 16, 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.*