# Sharper Image Smart vs Stackr

The clearest difference is review sentiment: Stackr at 72% against Sharper Image Smart's 9%. Stackr also leads on rating (4.4 vs 1.7) and update cadence (every 4 days vs every 10 days). Sharper Image Smart's advantage is in-app purchases (none vs 7) and iOS requirement (8.0 vs 17.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Stackr sells 7 in-app purchases, starting at $7.99 per 7 days. Sharper Image Smart asks for nothing beyond the download.

Stackr holds the better App Store score, 4.4 against 1.7. Both are backed by a comparable volume of ratings — 244 and 143 respectively. Written reviews point the same way: 9% of Sharper Image Smart's written reviews are positive against 72% of Stackr's.

Sharper Image Smart ships an update every 10 days, Stackr every 4 days. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Sharper Image Smart | Stackr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.7 (244 ratings)](https://appshunter.io/ios/app/sharper-image-smart/id1360087532/reviews) | **[4.4 (143 ratings)](https://appshunter.io/ios/app/stackr-peptide-glp-1-tracker/id6764821587/reviews)** |
| Number of ratings | **244** | 143 |
| Positive reviews | 8.7% of reviews | **72.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 4 days** |
| Monetization | **Free** | Freemium |
| Best chart rank | — | **#188** |
| Size | 4 MB | 88 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [MerchSource, LLC](https://appshunter.io/developer/1246580470) | [Stackr Holdings LLC](https://appshunter.io/developer/1896525659) |

## What reviewers say

### Sharper Image Smart

[App page](https://appshunter.io/ios/app/sharper-image-smart/id1360087532)

This application enables multiple household members to set and monitor weight loss objectives. It utilizes Bluetooth technology for seamless tracking and can sync data with the Apple Health app if authorized.

**Highlights:** Multiple user support, Weight loss goal setting, Bluetooth tracking, Apple Health sync, Effortless tracking

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Consistent and detailed
- 💡 Good functionality

**What reviewers complain about**

- 🐛 Impedance error
- 🐛 Bluetooth connectivity issues
- 🐛 Fails to save/sync data
- 🐛 Doesn't calculate all metrics
- 🐛 Stuck on kilograms

**Reported bugs**

- App crashes
- Doesn't work with latest iOS
- Doesn't save weight/body composition data

**Requested features**

- Ability to export data
- Stay logged in
- Half-inch height options


### Stackr

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

**Currently charting:** #188 Top Free · Health & Fitness, #195 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 Sharper Image Smart free?

Sharper Image Smart is free to download, with no in-app purchases.

### Is Stackr free?

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

### Which has better reviews, Sharper Image Smart or Stackr?

Stackr is rated higher. Sharper Image Smart averages 1.7 out of 5 from 244 ratings, while Stackr averages 4.4 from 143 ratings.

### Do Sharper Image Smart or Stackr have ads?

Neither Sharper Image Smart nor Stackr shows ads.

### Which is updated more often, Sharper Image Smart or Stackr?

Sharper Image Smart ships an update every 10 days, and Stackr every 4 days. Most recently, Sharper Image Smart was updated on October 7, 2026 and Stackr on October 13, 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.*