# Xignature vs Indoor Humidity Predictor

The clearest difference is price: Xignature at Free against Indoor Humidity Predictor's $3.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Xignature is free to download; Indoor Humidity Predictor costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Xignature | Indoor Humidity Predictor |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | — | **[2.0 (4 ratings)](https://appshunter.io/ios/app/indoor-humidity-predictor/id6748092001/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | — | Paid |
| Size | 67 MB | 19 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [PT. DIGITAL TANDATANGAN ASLI](https://appshunter.io/developer/1621019445) | [Constant Heritage, LLC](https://appshunter.io/developer/1206999958) |

## What reviewers say

### Xignature

[App page](https://appshunter.io/ios/app/xignature/id1621019443)

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

**In-app purchases:** none


### Indoor Humidity Predictor

[App page](https://appshunter.io/ios/app/indoor-humidity-predictor/id6748092001)

Transform your iPhone into a smart hygrometer to measure indoor humidity levels without extra hardware. Track air quality, protect wooden instruments, care for houseplants, and manage allergies with quick scans and actionable tips.

**Highlights:** Measure indoor humidity with phone sensors, Track air quality and health impacts, Protect wooden instruments and houseplants, Receive smart recommendations for air quality, Monitor humidity trends over time, Works offline after initial setup

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Xignature free?

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

### Is Indoor Humidity Predictor free?

Indoor Humidity Predictor costs $3.99, with no in-app purchases.

### Do Xignature or Indoor Humidity Predictor have ads?

Neither Xignature nor Indoor Humidity Predictor shows ads.

### Which is updated more often, Xignature or Indoor Humidity Predictor?

Xignature ships an update monthly, and Indoor Humidity Predictor monthly. Most recently, Xignature was updated on November 3, 2026 and Indoor Humidity Predictor on October 31, 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.*