# Slope Level RX vs SunLight

The clearest difference is price: SunLight at Free against Slope Level RX's $1.99. Slope Level RX's advantage is iOS requirement (17.0 vs 26.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

SunLight is free to download; Slope Level RX costs $1.99 up front. Slope Level RX sells 1 one-off in-app purchase and SunLight sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Slope Level RX ships an update every 3 weeks, SunLight fortnightly. The most recent releases landed on October 12, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Slope Level RX | SunLight |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Size | 2 MB | 69 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [浩东 许](https://appshunter.io/developer/1834069800) | [胜天 何](https://appshunter.io/developer/1667218804) |

## What reviewers say

### Slope Level RX

[App page](https://appshunter.io/ios/app/slope-level-rx/id6772923336)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Membership | $2.99 | one-time |


### SunLight

[App page](https://appshunter.io/ios/app/sunlight-3d-sun-path-tracker/id6784104999)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SunLight Pro Lifetime | $2.99 | one-time |


## Frequently asked questions

### Is Slope Level RX free?

Slope Level RX costs $1.99, and also offers in-app purchases.

### Is SunLight free?

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

### Do Slope Level RX or SunLight have ads?

Neither Slope Level RX nor SunLight shows ads.

### Which is updated more often, Slope Level RX or SunLight?

Slope Level RX ships an update every 3 weeks, and SunLight fortnightly. Most recently, Slope Level RX was updated on October 12, 2026 and SunLight on October 11, 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.*