# Hoya Sensor vs Nextsense eSign

Hoya Sensor and Nextsense eSign are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Hoya Sensor ships an update every 28 months, Nextsense eSign every 16 months. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Hoya Sensor | Nextsense eSign |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/hoya-sensor/id1202812114/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 16 months** |
| Monetization | Free | — |
| Size | 31 MB | 20 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hoya Holdings NV](https://appshunter.io/developer/492618708) | [Nextsense D.O.O.](https://appshunter.io/developer/703327499) |

## What reviewers say

### Hoya Sensor

[App page](https://appshunter.io/ios/app/hoya-sensor/id1202812114)

This app educates patients about blue light and UV protection lenses through simulations and images. It also allows for measuring blue light and UV radiation from various sources with a special device.

**Highlights:** Blue light blocking lens explanation, Blue light and UV radiation measurement, Simulations and images, Patient education tool, UV protection lens benefits

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

**In-app purchases:** none


### Nextsense eSign

[App page](https://appshunter.io/ios/app/nextsense-esign/id1442783894)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hoya Sensor free?

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

### Is Nextsense eSign free?

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

### Do Hoya Sensor or Nextsense eSign have ads?

Neither Hoya Sensor nor Nextsense eSign shows ads.

### Which is updated more often, Hoya Sensor or Nextsense eSign?

Hoya Sensor ships an update every 28 months, and Nextsense eSign every 16 months. Most recently, Hoya Sensor was updated on October 24, 2026 and Nextsense eSign on October 26, 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.*