# Сложение до 10 vs eKo Write

The clearest difference is price: eKo Write at Free against Сложение до 10's $2.99. eKo Write also leads on update cadence (every 8 days vs every 36 months). Сложение до 10's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 18.5). On ads and device support there is nothing between them.

eKo Write is free to download; Сложение до 10 costs $2.99 up front. eKo Write sells 1 one-off in-app purchase. Сложение до 10 asks for nothing beyond the download.

Сложение до 10 ships an update every 36 months, eKo Write every 8 days. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Сложение до 10 | eKo Write |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 8 days** |
| Size | 18 MB | 92 MB |
| Requires iOS | **12.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sergey Malugin](https://appshunter.io/developer/562782409) | [boyoung kim](https://appshunter.io/developer/1837090334) |

## What reviewers say

### Сложение до 10

[App page](https://appshunter.io/ios/app/10/id578054035)

**Features:** macOS Compatibility

**In-app purchases:** none


### eKo Write

[App page](https://appshunter.io/ios/app/eko-write/id6751829015)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| eKo Plus | $3.99 | one-time |


## Frequently asked questions

### Is Сложение до 10 free?

Сложение до 10 costs $2.99, with no in-app purchases.

### Is eKo Write free?

eKo Write is free to download, with in-app purchases available.

### Do Сложение до 10 or eKo Write have ads?

Neither Сложение до 10 nor eKo Write shows ads.

### Which is updated more often, Сложение до 10 or eKo Write?

Сложение до 10 ships an update every 36 months, and eKo Write every 8 days. Most recently, Сложение до 10 was updated on November 1, 2026 and eKo Write on November 5, 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.*