# ExtCalc vs Night Eyes

The clearest difference is review sentiment: Night Eyes at 65% against ExtCalc's 0%. Night Eyes also leads on update cadence (every 2 months vs every 5 months). ExtCalc's advantage is ads (none vs shown) and device support (6 vs 2). On price, in-app purchases, monetization model and iOS requirement there is nothing between them.

Both are free to download. ExtCalc sells 1 in-app purchase, starting at $4.99 per year and Night Eyes sells 5 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ExtCalc ships an update every 5 months, Night Eyes every 2 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | ExtCalc | Night Eyes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (21K ratings)](https://appshunter.io/ios/app/night-eyes-night-camera/id954158424/reviews)** |
| Number of ratings | — | **21K** |
| Positive reviews | 0.0% of reviews | **64.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 7 MB | 23 MB |
| Requires iOS | 18.7 | **17.0** |
| Devices | **iPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Matthias Weber](https://appshunter.io/developer/386132193) | [Nico Schroeder](https://appshunter.io/developer/432790036) |

## What reviewers say

### ExtCalc

[App page](https://appshunter.io/ios/app/extcalc/id386132190)

This scientific calculator offers a colorized text view for formulas, allowing for individual calculation sheets and easy memorization of results. It features a customizable constants pool, VAT calculator, and cloud synchronization for seamless use across devices. Accessibility and team collaboration are also emphasized.

**Highlights:** Colorized formula view, Individual calculation sheets, Memorize results, Customizable constants pool, VAT calculator, Cloud synchronization, Apple Watch app

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Subscription | $4.99 | per year |


### Night Eyes

[App page](https://appshunter.io/ios/app/night-eyes-night-camera/id954158424)

Enhance your mobile device's camera for low-light photography. This app uses advanced algorithms to amplify residual light in real-time, allowing you to capture details in dim conditions. It offers various amplification modes, exposure times, and color filters for improved image quality.

**Highlights:** Residual light amplification, Real-time luminance histogram, Up to 1-second exposure time, 10x digital live zoom, Multiple color filters, HD photo capture

**Features:** Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Night Eyes - One Month Premium | $1.99 | per month |
| Night Eyes - One Year Premium | $6.99 | per year |
| Night Eyes - One Week Premium | $8.99 | per 7 days |
| Remove Ads | $9.99 | one-time |
| Night Eyes Pro - Lifetime | $9.99 | one-time |

**What reviewers like**

- 🚀 Excellent night vision capabilities
- 👍 Wide range of color filters
- 🔍 Impressive zoom and focus
- 💡 Useful for surveillance and low-light situations

**What reviewers complain about**

- 🐛 Occasional crashes and performance issues
- 🔋 Drains battery quickly in low-light conditions
- 🔒 Privacy concerns with location tracking
- 💰 Paid features should be free or better explained

**Reported bugs**

- App crashes when switching between modes
- Zoom and focus features not always reliable
- Compatibility issues with newer iPhone models

**Requested features**

- Add video recording capability
- Improve low-light performance without draining battery
- Provide more detailed instructions and tutorials
- Offer a free version without ads


## Frequently asked questions

### Is ExtCalc free?

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

### Is Night Eyes free?

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

### Do ExtCalc or Night Eyes have ads?

Night Eyes shows ads; ExtCalc does not.

### Which is updated more often, ExtCalc or Night Eyes?

ExtCalc ships an update every 5 months, and Night Eyes every 2 months. Most recently, ExtCalc was updated on November 1, 2026 and Night Eyes on November 6, 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.*