# ECHO Pro vs Leica PAULA

The clearest difference is update cadence: ECHO Pro at every 2 weeks against Leica PAULA's every 4 months. Leica PAULA's advantage is iOS requirement (12.1 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

ECHO Pro ships an update every 2 weeks, Leica PAULA every 4 months. The most recent releases landed on June 1, 2026 and March 11, 2026 respectively.

## The numbers

| Metric | ECHO Pro | Leica PAULA |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 103 MB | 127 MB |
| Requires iOS | 15.0 | **12.1** |
| Devices | iPad | iPad |
| Age rating | 4+ | 12+ |
| Developer | [Echo Laboratories](https://appshunter.io/developer/935502816) | [Leica Microsystems GmbH](https://appshunter.io/developer/526669069) |

## What reviewers say

### ECHO Pro

[App page](https://appshunter.io/ios/app/echo-pro/id1052945965)

This app transforms your compatible iPad into a powerful microscope control and imaging device. Capture, annotate, and share high-quality brightfield and fluorescence images with intuitive on-screen controls and advanced features like Anti-Shake.

**Highlights:** Brightfield imaging with adjustable contrast, Epi-fluorescence imaging (Revolve microscope), Anti-Shake feature for blur-free images, Integrated photo browser and cloud sharing, Photo annotation for cell counting and measurements, Automatic saving of image settings

**In-app purchases:** none


### Leica PAULA

[App page](https://appshunter.io/ios/app/leica-paula/id1192699434)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ECHO Pro free?

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

### Is Leica PAULA free?

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

### Do ECHO Pro or Leica PAULA have ads?

Neither ECHO Pro nor Leica PAULA shows ads.

### Which is updated more often, ECHO Pro or Leica PAULA?

ECHO Pro ships an update every 2 weeks, and Leica PAULA every 4 months. Most recently, ECHO Pro was updated on June 1, 2026 and Leica PAULA on March 11, 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.*