# Sensor Chemstore vs BilagSky

The clearest difference is update cadence: BilagSky at every 9 days against Sensor Chemstore's every 6 months. 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.

Sensor Chemstore ships an update every 6 months, BilagSky every 9 days. The most recent releases landed on May 16, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Sensor Chemstore | BilagSky |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 9 days** |
| Size | 51 MB | 69 MB |
| Requires iOS | 17.2 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Sensor Chemcontrol AS](https://appshunter.io/developer/1498593538) | [Oryton AS](https://appshunter.io/developer/1277067223) |

## What reviewers say

### Sensor Chemstore

[App page](https://appshunter.io/ios/app/sensor-chemstore/id1498593539)

**Features:** macOS Compatibility

**In-app purchases:** none


### BilagSky

[App page](https://appshunter.io/ios/app/bilagsky/id1505173213)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sensor Chemstore free?

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

### Is BilagSky free?

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

### Do Sensor Chemstore or BilagSky have ads?

Neither Sensor Chemstore nor BilagSky shows ads.

### Which is updated more often, Sensor Chemstore or BilagSky?

Sensor Chemstore ships an update every 6 months, and BilagSky every 9 days. Most recently, Sensor Chemstore was updated on May 16, 2026 and BilagSky on September 15, 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.*