# Attend vs Slope Level RX

The clearest difference is price: Attend at Free against Slope Level RX's $1.99. Attend also leads on in-app purchases (none vs 1) and iOS requirement (12.0 vs 17.0). Slope Level RX's advantage is update cadence (every 3 weeks vs every 12 months). On ads and device support there is nothing between them.

Attend is free to download; Slope Level RX costs $1.99 up front. Slope Level RX sells 1 one-off in-app purchase. Attend asks for nothing beyond the download.

Attend ships an update every 12 months, Slope Level RX every 3 weeks. Both last shipped on September 9, 2026.

## The numbers

| Metric | Attend | Slope Level RX |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Size | 57 MB | 2 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Neartech Solutions SL](https://appshunter.io/developer/1495957494) | [浩东 许](https://appshunter.io/developer/1834069800) |

## What reviewers say

### Attend

[App page](https://appshunter.io/ios/app/attend-m/id1496135900)

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Attend free?

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

### Is Slope Level RX free?

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

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

Neither Attend nor Slope Level RX shows ads.

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

Attend ships an update every 12 months, and Slope Level RX every 3 weeks. Most recently, Attend was updated on September 9, 2026 and Slope Level RX on September 9, 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.*