# GLS Studio vs Solid

The clearest difference is in-app purchases: GLS Studio at none against Solid's 3. GLS Studio also leads on iOS requirement (15.0 vs 26.0). Solid's advantage is update cadence (every 5 weeks vs every 20 months). On price, ads and device support there is nothing between them.

Both are free to download. Solid sells 3 in-app purchases, starting at $3.99 per 7 days. GLS Studio asks for nothing beyond the download.

GLS Studio ships an update every 20 months, Solid every 5 weeks. The most recent releases landed on November 8, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | GLS Studio | Solid |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 5 weeks** |
| Size | 60 MB | 6 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Yun Chan Che](https://appshunter.io/developer/1755705294) | [Shamil Tursynbaev](https://appshunter.io/developer/1815495350) |

## What reviewers say

### GLS Studio

[App page](https://appshunter.io/ios/app/gls-studio/id6514304305)

**Features:** macOS Compatibility

**In-app purchases:** none


### Solid

[App page](https://appshunter.io/ios/app/solid-baby-food-tracker/id6794577094)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plus | $3.99 | per 7 days |
| Yearly Plus Offer | $19.99 | per year |
| Yearly Plus | $34.99 | per year |


## Frequently asked questions

### Is GLS Studio free?

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

### Is Solid free?

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

### Do GLS Studio or Solid have ads?

Neither GLS Studio nor Solid shows ads.

### Which is updated more often, GLS Studio or Solid?

GLS Studio ships an update every 20 months, and Solid every 5 weeks. Most recently, GLS Studio was updated on November 8, 2026 and Solid on November 10, 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.*