# SlopeReader vs Loop

The clearest difference is in-app purchases: SlopeReader at none against Loop's 2. SlopeReader also leads on update cadence (daily vs fortnightly). Loop's advantage is iOS requirement (15.1 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. Loop sells 2 in-app purchases, starting at $9.99 per month. SlopeReader asks for nothing beyond the download.

SlopeReader ships an update daily, Loop fortnightly. The most recent releases landed on October 8, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SlopeReader | Loop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/slopereader/id6755605118/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Fortnightly |
| Monetization | Free | — |
| Size | 9 MB | 31 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Stephen Lee](https://appshunter.io/developer/1854830513) | [Tinywave AB](https://appshunter.io/developer/1871392396) |

## What reviewers say

### SlopeReader

[App page](https://appshunter.io/ios/app/slopereader/id6755605118)

This tool helps golfers measure green slopes with precision using their iPhone. It provides real-time visual feedback on pitch and roll, aiding in green reading and building Aimpoint Express techniques. The app works offline and offers smart calibration for accurate readings.

**Highlights:** Real-time bubble level for slope visualization, Multiple units: Percent, Degrees, Radians, Smart calibration for phone cases, Directional indicators for slope direction, Completely offline functionality, Always-on display for continuous measurement, Instant 60Hz sensor updates

**In-app purchases:** none


### Loop

[App page](https://appshunter.io/ios/app/loop-constraint-based-golf/id6758199007)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Loop Monthly Subscription | $9.99 | per month |
| Loop Season Pass (6 months) | $39.99 | per 6 months |


## Frequently asked questions

### Is SlopeReader free?

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

### Is Loop free?

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

### Do SlopeReader or Loop have ads?

Neither SlopeReader nor Loop shows ads.

### Which is updated more often, SlopeReader or Loop?

SlopeReader ships an update daily, and Loop fortnightly. Most recently, SlopeReader was updated on October 8, 2026 and Loop on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*