# JJ Solar vs Kael

The clearest difference is in-app purchases: JJ Solar at none against Kael's 2. JJ Solar also leads on iOS requirement (13.4 vs 17.0). Kael's advantage is update cadence (every 4 days vs fortnightly). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Kael sells 2 in-app purchases, starting at $7.99 per month. JJ Solar asks for nothing beyond the download.

JJ Solar ships an update fortnightly, Kael every 4 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | JJ Solar | Kael |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/kael-quit-doomscrolling/id6771115892/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | **Free** | Freemium |
| Size | 56 MB | 7 MB |
| Requires iOS | **13.4** | 17.0 |
| Devices | iPhone, iPod | iPhone, Mac |
| Age rating | 4+ | 4+ |
| Developer | [AHASOLAR TECHNOLOGIES LIMITED](https://appshunter.io/developer/1632224285) | [RAJ JIGNESHKUMAR PATEL](https://appshunter.io/developer/1894717521) |

## What reviewers say

### JJ Solar

[App page](https://appshunter.io/ios/app/jj-solar/id1486782756)

This platform connects consumers with solar energy solutions. It facilitates the estimation of solar PV installations, communication with providers, online payments, and scheduling of site visits for a seamless green energy transition.

**Highlights:** Solar PV installation estimation, Connect with solar providers, Online payment processing, Schedule site visits, Track earnings, Plan daily activities

**In-app purchases:** none


### Kael

[App page](https://appshunter.io/ios/app/kael-quit-doomscrolling/id6771115892)

This app uses AI to help you block distracting apps and websites by requiring a reason for access. It adapts its strictness based on your schedule and location, promoting focused work and study. It also includes features for managing deadlines, scheduling breaks, and collaborating with friends.

**Highlights:** AI-driven app blocking, Context-aware strictness modes, Deadline tracking, Calendar and to-do integration, Location-based focus zones, Group accountability features, Focus pattern analysis

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kael Pro — Monthly | $7.99 | per month |
| Kael Pro — Yearly | $89.99 | per year |


## Frequently asked questions

### Is JJ Solar free?

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

### Is Kael free?

Kael is free to download, with in-app purchases available.

### Do JJ Solar or Kael have ads?

Neither JJ Solar nor Kael shows ads.

### Which is updated more often, JJ Solar or Kael?

JJ Solar ships an update fortnightly, and Kael every 4 days. Most recently, JJ Solar was updated on November 3, 2026 and Kael on November 5, 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.*