# Regimen vs Stackr

The clearest difference is rating: Regimen at 4.8 against Stackr's 4.4. Regimen also leads on review sentiment (94% vs 68%) and device support (3 vs 1). Stackr's advantage is chart position (#196 vs unranked). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Regimen sells 2 in-app purchases, starting at $7.99 per month and Stackr sells 7 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Regimen holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 574 and 225 respectively. Written reviews point the same way: 94% of Regimen's written reviews are positive against 68% of Stackr's.

Regimen ships an update every 9 days, Stackr weekly. Both last shipped on November 9, 2026.

## The numbers

| Metric | Regimen | Stackr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (574 ratings)](https://appshunter.io/ios/app/regimen-peptide-tracker/id6753905449/reviews)** | [4.4 (225 ratings)](https://appshunter.io/ios/app/stackr-peptide-glp-1-tracker/id6764821587/reviews) |
| Number of ratings | **574** | 225 |
| Positive reviews | **94.2% of reviews** | 67.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Weekly** |
| Monetization | Freemium | Freemium |
| Best chart rank | — | **#196** |
| Size | 27 MB | 88 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Awaken Labs LLC](https://appshunter.io/developer/1845610555) | [Stackr Holdings LLC](https://appshunter.io/developer/1896525659) |

## What reviewers say

### Regimen

[App page](https://appshunter.io/ios/app/regimen-peptide-tracker/id6753905449)

Log injections, doses, side effects, and weight for GLP-1, TRT, HRT, and peptide medications. Plan schedules, rotate injection sites, track vials, bloodwork, and nutrition. Syncs with Apple Health and offers a compound library.

**Highlights:** Log injections and doses, Track side effects and weight, Schedule custom dosing, Rotate injection sites, Sync with Apple Health, Monitor bloodwork and labs, Visualize medication levels

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Regimen Premium | $7.99 | per month |
| Regimen Premium Annual | $49.99 | per year |


### Stackr

[App page](https://appshunter.io/ios/app/stackr-peptide-glp-1-tracker/id6764821587)

**Currently charting:** #196 Top Grossing · Health & Fitness (US App Store)

This app simplifies tracking peptide and GLP-1 doses, including supplies like vials and pens. It offers smart reminders, home screen widgets, and visual charts of estimated active levels based on half-life. Designed for users managing peptide protocols, it keeps your dosing information organized and accessible.

**Highlights:** Log peptide and GLP-1 doses, Track vials, pens, and other supplies, Smart reminders for next doses, Home screen widgets, Estimated active level charts, Multi-peptide stack tracking, Reference pages for common compounds

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stackr+ Weekly | $7.99 | per 7 days |
| Monthly | $12.99 | per month |
| Stackr+ Yearly | $29.99 | per year |
| Stackr+ Yearly | $49.99 | per year |
| Stackr+ Yearly | $49.99 | per year |
| Stackr+ Yearly | $59.99 | per year |
| Yearly | $69.99 | per year |


## Frequently asked questions

### Is Regimen free?

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

### Is Stackr free?

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

### Which has better reviews, Regimen or Stackr?

Regimen is rated higher. Regimen averages 4.8 out of 5 from 574 ratings, while Stackr averages 4.4 from 225 ratings.

### Do Regimen or Stackr have ads?

Neither Regimen nor Stackr shows ads.

### Which is updated more often, Regimen or Stackr?

Regimen ships an update every 9 days, and Stackr weekly. Most recently, Regimen was updated on November 9, 2026 and Stackr on November 9, 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.*