# Gemetrix vs Night Vision

The clearest difference is rating: Night Vision at 4.5 against Gemetrix's 2.2. Night Vision also leads on update cadence (every 3 days vs monthly) and review sentiment (75% vs 50%). Gemetrix's advantage is in-app purchases (none vs 2) and iOS requirement (10.3 vs 14.0). On price, ads and device support there is nothing between them.

Both are free to download. Night Vision sells 2 in-app purchases, starting at $4.99 per 7 days. Gemetrix asks for nothing beyond the download.

Night Vision holds the better App Store score, 4.5 against 2.2. That said, the two scores are not equally well evidenced: Night Vision has 370 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 50% of Gemetrix's written reviews are positive against 75% of Night Vision's.

Gemetrix ships an update monthly, Night Vision every 3 days. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Gemetrix | Night Vision |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.2 (5 ratings)](https://appshunter.io/ios/app/gemetrix/id1363103077/reviews) | **[4.5 (370 ratings)](https://appshunter.io/ios/app/night-vision-thermal-camera/id6692618890/reviews)** |
| Number of ratings | 5 | **370** |
| Positive reviews | 50.0% of reviews | **75.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | **Free** | Subscription |
| Size | 18 MB | 7 MB |
| Requires iOS | **10.3** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [John Chapman](https://appshunter.io/developer/1363103076) | [Davros Pashayan](https://appshunter.io/developer/1763634740) |

## What reviewers say

### Gemetrix

[App page](https://appshunter.io/ios/app/gemetrix/id1363103077)

Control your smartphone camera's exposure, ISO, color temperature, and focus for both short-wave and long-wave UV illuminations. Compare captured images side-by-side or with a slider, and save them with clear labeling.

**Highlights:** UV illumination control (SWUV & LWUV), Adjustable exposure, ISO, color temperature, focus, Side-by-side image comparison, Image slider comparison, Save labeled images

**Features:** macOS Compatibility

**In-app purchases:** none


### Night Vision

[App page](https://appshunter.io/ios/app/night-vision-thermal-camera/id6692618890)

Experience the night with a realistic green filter, transforming your photos and videos with a classic night vision effect. Explore multiple viewing modes to simulate goggles, binoculars, and scopes. Capture and share your nocturnal creations easily.

**Highlights:** Realistic green night vision filter, Multiple viewing modes (goggles, binoculars, scopes), Capture and share photos/videos, Simple and intuitive interface, Enhance visual content with nocturnal look

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Night Vision Effect Premium | $4.99 | per 7 days |
| Night Vision Effect Pro | $4.99 | per 7 days |


## Frequently asked questions

### Is Gemetrix free?

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

### Is Night Vision free?

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

### Which has better reviews, Gemetrix or Night Vision?

Night Vision is rated higher. Gemetrix averages 2.2 out of 5 from 5 ratings, while Night Vision averages 4.5 from 370 ratings.

### Do Gemetrix or Night Vision have ads?

Neither Gemetrix nor Night Vision shows ads.

### Which is updated more often, Gemetrix or Night Vision?

Gemetrix ships an update monthly, and Night Vision every 3 days. Most recently, Gemetrix was updated on November 2, 2026 and Night Vision on November 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.*