# GlowBack vs Sleep Calculator

The clearest difference is ads: Sleep Calculator at none against GlowBack's shown. GlowBack's advantage is update cadence (every 11 days vs every 5 months) and iOS requirement (15.6 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. GlowBack sells 6 in-app purchases, starting at $19.99 per month and Sleep Calculator sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

GlowBack ships an update every 11 days, Sleep Calculator every 5 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | GlowBack | Sleep Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (123 ratings)](https://appshunter.io/ios/app/glowback-glp-1-tracker/id6752373585/reviews)** | — |
| Number of ratings | **123** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 11 days** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 203 MB | 6 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Meta Innovation](https://appshunter.io/developer/1698636975) | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) |

## What reviewers say

### GlowBack

[App page](https://appshunter.io/ios/app/glowback-glp-1-tracker/id6752373585)

This app helps users track GLP-1 medication injections, monitor weight and health metrics, and log daily intake. It provides visual analytics, progress trends, and goal management. Integrates with Apple Health for a comprehensive overview of your health journey.

**Highlights:** Log GLP-1 injections, Track weight and health changes, Monitor protein and water intake, View visual analytics and progress trends, Set and manage personal goals, Integrates with Apple Health

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $19.99 | per month |
| Quarterly | $29.99 | per 3 months |
| Annual | $35.99 | per year |
| Yearly | $39.99 | per year |
| Yearly | $59.99 | per year |
| Annual | $59.99 | per year |


### Sleep Calculator

[App page](https://appshunter.io/ios/app/sleep-calculator-bedtime/id6772125601)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Power Nap Weekly | $2.99 | per 7 days |
| Smart Alarm Yearly | $14.99 | per year |
| White Noise Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is GlowBack free?

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

### Is Sleep Calculator free?

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

### Do GlowBack or Sleep Calculator have ads?

GlowBack shows ads; Sleep Calculator does not.

### Which is updated more often, GlowBack or Sleep Calculator?

GlowBack ships an update every 11 days, and Sleep Calculator every 5 months. Most recently, GlowBack was updated on October 30, 2026 and Sleep Calculator on October 31, 2026.

---

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