# Numbers in Bulgarian language vs Vipervision

The clearest difference is ads: Vipervision at none against Numbers in Bulgarian language's shown. Numbers in Bulgarian language's advantage is update cadence (every 3 weeks vs every 6 weeks) and iOS requirement (15.4 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Numbers in Bulgarian language sells 5 in-app purchases, starting at $3.99 per month and Vipervision sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Numbers in Bulgarian language ships an update every 3 weeks, Vipervision every 6 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Numbers in Bulgarian language | Vipervision |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/numbers-in-bulgarian-language/id1517693215/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 19 MB | 11 MB |
| Requires iOS | **15.4** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nelly Latypova](https://appshunter.io/developer/1150816403) | [boyswithbeards](https://appshunter.io/developer/655746341) |

## What reviewers say

### Numbers in Bulgarian language

[App page](https://appshunter.io/ios/app/numbers-in-bulgarian-language/id1517693215)

Master Bulgarian numbers with interactive tests and a handy converter. This app offers a systematic approach to learning digits and their written forms, suitable for all ages and proficiency levels. Improve your vocabulary and language skills for daily life, travel, or exams.

**Highlights:** Interactive learning tests, Fast practice tests, Mathematical tests, Logical number sequence tests, Number to alphabetic converter, Systematic learning approach

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Learn Languages Better Pro | $3.99 | per month |
| Learn Languages Better Pro | $7.49 | per month |
| Language Learning Course Pro | $8.49 | per 7 days |
| Pro Complete Language Course | $34.99 | per year |
| Remove advertising | $3.99 | one-time |


### Vipervision

[App page](https://appshunter.io/ios/app/vipervision-snake-identifier/id6767580607)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Yearly Premium | $44.99 | per year |


## Frequently asked questions

### Is Numbers in Bulgarian language free?

Numbers in Bulgarian language is free to download, with in-app purchases available.

### Is Vipervision free?

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

### Do Numbers in Bulgarian language or Vipervision have ads?

Numbers in Bulgarian language shows ads; Vipervision does not.

### Which is updated more often, Numbers in Bulgarian language or Vipervision?

Numbers in Bulgarian language ships an update every 3 weeks, and Vipervision every 6 weeks. Most recently, Numbers in Bulgarian language was updated on November 3, 2026 and Vipervision on October 31, 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.*