# Iris GLP vs Lighter

The clearest difference is monetization model: Iris GLP at freemium against Lighter's subscription. Lighter's advantage is ratings volume (24 vs 5). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. Iris GLP sells 2 in-app purchases, starting at $7.99 per month and Lighter sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Iris GLP against 5.0 for Lighter. Both are backed by a comparable volume of ratings — 5 and 24 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 23, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Iris GLP | Lighter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/iris-glp-1-tracker/id6784386060/reviews) | [5.0 (24 ratings)](https://appshunter.io/ios/app/lighter-glp-1-peptide-tracker/id6787544143/reviews) |
| Number of ratings | 5 | **24** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | Every 4 days |
| Monetization | **Freemium** | Subscription |
| Size | 31 MB | 82 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Iris Tracker LLC](https://appshunter.io/developer/6784386062) | [Flame Industries](https://appshunter.io/developer/1764665616) |

## What reviewers say

### Iris GLP

[App page](https://appshunter.io/ios/app/iris-glp-1-tracker/id6784386060)

This app helps adults manage their GLP-1 medication routines, track symptoms, weight, and nutrition. It provides dose history, reminders, and summaries for doctor's visits. Advanced features are available with a subscription.

**Highlights:** Medication logging and reminders, Symptom and side-effect tracking, Weight and nutrition monitoring, Appointment preparation summaries, Apple Health integration, Home screen widgets

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Iris+ Monthly | $7.99 | per month |
| Iris+ Annual | $39.99 | per year |


### Lighter

[App page](https://appshunter.io/ios/app/lighter-glp-1-peptide-tracker/id6787544143)

Effortlessly track your GLP-1 medication doses, injection sites, and side effects. Monitor your medication levels and weight trends with a simple, intuitive interface designed for consistency.

**Highlights:** Log injections or pills in seconds, Rotate injection sites on a body map, Set shot-day reminders, View estimated medication level, Track side effects and patterns, Monitor weight trends, No account required

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lighter Premium (Monthly) | $9.99 | per month |
| Lighter Premium (Annual) | $39.99 | per year |


## Frequently asked questions

### Is Iris GLP free?

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

### Is Lighter free?

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

### Which has better reviews, Iris GLP or Lighter?

Iris GLP and Lighter are both rated 5.0 out of 5 on the App Store, from 5 and 24 ratings respectively.

### Do Iris GLP or Lighter have ads?

Neither Iris GLP nor Lighter shows ads.

### Which is updated more often, Iris GLP or Lighter?

Iris GLP ships an update every 4 days, and Lighter every 4 days. Most recently, Iris GLP was updated on October 23, 2026 and Lighter on October 21, 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.*