# Spark SLO vs SLO x FORM

The clearest difference is ratings volume: Spark SLO at 555 against SLO x FORM's 27. SLO x FORM's advantage is monetization model (free vs ad-supported). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Spark SLO against 5.0 for SLO x FORM. That said, the two scores are not equally well evidenced: Spark SLO has 555 ratings behind it against 27, so its average is the more settled of the two.

Spark SLO ships an update monthly, SLO x FORM every 3 weeks. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Spark SLO | SLO x FORM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (555 ratings)](https://appshunter.io/ios/app/spark-slo/id1523088322/reviews)** | [5.0 (27 ratings)](https://appshunter.io/ios/app/slo-x-form/id6748541120/reviews) |
| Number of ratings | **555** | 27 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 38 MB | 38 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nick and Steph Young LLC](https://appshunter.io/developer/1497625125) | [SLO x FORM](https://appshunter.io/developer/1826134265) |

## What reviewers say

### Spark SLO

[App page](https://appshunter.io/ios/app/spark-slo/id1523088322)

This app offers a supportive environment for yoga practice, encouraging freedom of expression, playfulness, and compassion. It aims to foster personal growth through inward exploration in a judgment-free space.

**Highlights:** Supportive family-based yoga, Freedom of expression, Playfulness and compassion, Inward exploration, Judgment-free space

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

**In-app purchases:** none


### SLO x FORM

[App page](https://appshunter.io/ios/app/slo-x-form/id6748541120)

Easily browse and purchase class packs or membership options. View the class schedule, filter by type, and manage your reservations to stay organized and committed to your fitness goals.

**Highlights:** Purchase class packs and memberships, Browse class schedule, Filter classes by type, Manage reservations, Stay organized with fitness goals

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Spark SLO free?

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

### Is SLO x FORM free?

SLO x FORM is free to download, with no in-app purchases.

### Which has better reviews, Spark SLO or SLO x FORM?

Spark SLO is rated higher. Spark SLO averages 5.0 out of 5 from 555 ratings, while SLO x FORM averages 5.0 from 27 ratings.

### Do Spark SLO or SLO x FORM have ads?

Neither Spark SLO nor SLO x FORM shows ads.

### Which is updated more often, Spark SLO or SLO x FORM?

Spark SLO ships an update monthly, and SLO x FORM every 3 weeks. Most recently, Spark SLO was updated on November 7, 2026 and SLO x FORM 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.*