# Русские меры vs LensDataBase

The clearest difference is in-app purchases: LensDataBase at none against Русские меры's 1. Русские меры's advantage is device support (4 vs 2) and iOS requirement (16.0 vs 18.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Русские меры sells 1 one-off in-app purchase. LensDataBase asks for nothing beyond the download.

Русские меры ships an update every 5 days, LensDataBase weekly. The most recent releases landed on August 14, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Русские меры | LensDataBase |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id1638481772/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | Free | — |
| Size | 18 MB | 7 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dmitry Kanunnikoff](https://appshunter.io/developer/1449411291) | [Evgenii Skvortsov](https://appshunter.io/developer/1719877397) |

## What reviewers say

### Русские меры

[App page](https://appshunter.io/ios/app/id1638481772)

This app helps you convert between historical Russian units of measurement and modern units. It's perfect for history buffs and cultural enthusiasts interested in pre-revolutionary Russia.

**Highlights:** Converts historical Russian units, Converts to modern units, Explains historical measurements, Focuses on pre-revolutionary Russia, No usage restrictions

**Features:** Apple Watch app, iMessage stickers

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Чаевые | $0.99 | one-time |


### LensDataBase

[App page](https://appshunter.io/ios/app/lensdatabase/id6748017755)

**In-app purchases:** none


## Frequently asked questions

### Is Русские меры free?

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

### Is LensDataBase free?

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

### Do Русские меры or LensDataBase have ads?

Neither Русские меры nor LensDataBase shows ads.

### Which is updated more often, Русские меры or LensDataBase?

Русские меры ships an update every 5 days, and LensDataBase weekly. Most recently, Русские меры was updated on August 14, 2026 and LensDataBase on September 8, 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.*