Gradient Comfort vs ORNL Library Self
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gradient Comfort
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.
- Remote temperature adjustment
- Fan speed control
- Customizable comfort schedules
- Control from anywhere
- Energy efficient system management
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Put air comfort in your control with the Gradient app. The Gradient is a WiFi-enabled, energy efficient, hybrid cooling and heating system that replaces your window AC. This app enables you to adjust your Gradient’s settings from anywhere; set temperature/fan speed; schedule air comfort.
ORNL Library Self
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The ORNL Library Self-Checkout is your key to a swift and convenient borrowing experience, perfect for those working late or on the go. Download the app or visit the kiosk to scan and check out your materials.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Gradient Comfort | ORNL Library Self |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (10 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 50 MB | 356 MB |
| Age rating | 4+ | 17+ |
| Developer | Treau, Inc | Meescan Inc. |
In-app purchases
Gradient Comfort
No in-app purchases
ORNL Library Self
No in-app purchases
Questions
Is Gradient Comfort free?
Is ORNL Library Self free?
Do Gradient Comfort or ORNL Library Self have ads?
Which is updated more often, Gradient Comfort or ORNL Library Self?
Other comparisons
