# Gradient Comfort vs ORNL Library Self

The clearest difference is update cadence: ORNL Library Self at fortnightly against Gradient Comfort's every 2 months. ORNL Library Self also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

Gradient Comfort ships an update every 2 months, ORNL Library Self fortnightly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Gradient Comfort | ORNL Library Self |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (10 ratings)](https://appshunter.io/ios/app/gradient-comfort/id1634250356/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 50 MB | 356 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Treau, Inc](https://appshunter.io/developer/1457064311) | [Meescan Inc.](https://appshunter.io/developer/1609729285) |

## What reviewers say

### Gradient Comfort

[App page](https://appshunter.io/ios/app/gradient-comfort/id1634250356)

Control your WiFi-enabled hybrid cooling and heating system remotely. Adjust temperature, fan speed, and set schedules for optimal air comfort from anywhere. This app enhances the functionality of your window AC replacement.

**Highlights:** Remote temperature adjustment, Fan speed control, Customizable comfort schedules, Control from anywhere, Energy efficient system management

**Features:** macOS Compatibility

**In-app purchases:** none


### ORNL Library Self

[App page](https://appshunter.io/ios/app/ornl-library-self-checkout/id6473654261)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gradient Comfort free?

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

### Is ORNL Library Self free?

ORNL Library Self is free to download, with no in-app purchases.

### Do Gradient Comfort or ORNL Library Self have ads?

Neither Gradient Comfort nor ORNL Library Self shows ads.

### Which is updated more often, Gradient Comfort or ORNL Library Self?

Gradient Comfort ships an update every 2 months, and ORNL Library Self fortnightly. Most recently, Gradient Comfort was updated on November 3, 2026 and ORNL Library Self on November 4, 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.*