# Red Light Method Studio vs Formula Sift

The clearest difference is in-app purchases: Red Light Method Studio at none against Formula Sift's 3. Red Light Method Studio also leads on iOS requirement (16.6 vs 18.0). Formula Sift's advantage is update cadence (every 5 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Formula Sift sells 3 in-app purchases, starting at $2.99 per month. Red Light Method Studio asks for nothing beyond the download.

Red Light Method Studio ships an update every 3 weeks, Formula Sift every 5 days. The most recent releases landed on October 11, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Red Light Method Studio | Formula Sift |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/red-light-method-studio/id6479454856/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Free | — |
| Size | 97 MB | 7 MB |
| Requires iOS | **16.6** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Red Lite Gym LLC](https://appshunter.io/developer/1623820301) | [占辉 百](https://appshunter.io/developer/1081455103) |

## What reviewers say

### Red Light Method Studio

[App page](https://appshunter.io/ios/app/red-light-method-studio/id6479454856)

Book sessions for a unique fitness experience combining red light therapy and vibration plate exercise. Track your progress, set goals, and stay updated on studio events. Achieve better results by working your body from the inside.

**Highlights:** Effortless class scheduling, Book any class time, Track personal attendance goals, Monitor fitness progress, Stay updated on studio events, Community news updates

**Features:** Apple Wallet

**In-app purchases:** none


### Formula Sift

[App page](https://appshunter.io/ios/app/formula-sift-ingredient-check/id6766007677)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Membership | $2.99 | per month |
| Yearly Premium Membership | $9.99 | per year |
| Lifetime Premium | $17.99 | one-time |


## Frequently asked questions

### Is Red Light Method Studio free?

Red Light Method Studio is free to download, with no in-app purchases.

### Is Formula Sift free?

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

### Do Red Light Method Studio or Formula Sift have ads?

Neither Red Light Method Studio nor Formula Sift shows ads.

### Which is updated more often, Red Light Method Studio or Formula Sift?

Red Light Method Studio ships an update every 3 weeks, and Formula Sift every 5 days. Most recently, Red Light Method Studio was updated on October 11, 2026 and Formula Sift on October 3, 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.*