# Alfredo Backer vs Microscope Resolution

The clearest difference is price: Alfredo Backer at Free against Microscope Resolution's $1.99. Alfredo Backer also leads on ads (none vs shown). Microscope Resolution's advantage is update cadence (every 3 months vs every 8 months) and iOS requirement (13.0 vs 16.0). On in-app purchases and device support there is nothing between them.

Alfredo Backer is free to download; Microscope Resolution costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Alfredo Backer ships an update every 8 months, Microscope Resolution every 3 months. The most recent releases landed on September 18, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Alfredo Backer | Microscope Resolution |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | — | **[3.7 (6 ratings)](https://appshunter.io/ios/app/microscope-resolution/id1229786939/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 3 months** |
| Monetization | — | Paid |
| Size | 55 MB | 5 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Externato Alfredo Backer Ltda](https://appshunter.io/developer/1535072495) | [Andrew Barlow](https://appshunter.io/developer/1229786938) |

## What reviewers say

### Alfredo Backer

[App page](https://appshunter.io/ios/app/alfredo-backer/id1212354980)

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

**In-app purchases:** none


### Microscope Resolution

[App page](https://appshunter.io/ios/app/microscope-resolution/id1229786939)

Calculate microscope objective lens resolution and brightness. Match lenses to your imaging system and check sampling frequency. Save, share, and access calculation equations.

**Highlights:** Calculate lateral and axial resolution, Calculate objective brightness, Match objective to acquisition system, Check Nyquist sampling frequency, Save and restore objective data, Share objective data, Display calculation equations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Alfredo Backer free?

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

### Is Microscope Resolution free?

Microscope Resolution costs $1.99, with no in-app purchases.

### Do Alfredo Backer or Microscope Resolution have ads?

Microscope Resolution shows ads; Alfredo Backer does not.

### Which is updated more often, Alfredo Backer or Microscope Resolution?

Alfredo Backer ships an update every 8 months, and Microscope Resolution every 3 months. Most recently, Alfredo Backer was updated on September 18, 2026 and Microscope Resolution on October 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*