# i vs Scale Link

The clearest difference is review sentiment: i at 50% against Scale Link's 0%. i also leads on rating (2.4 vs 1.5). Scale Link's advantage is update cadence (every 4 months vs every 14 months) and iOS requirement (10.3 vs 16.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

i holds the better App Store score, 2.4 against 1.5. Both are backed by a comparable volume of ratings — 14 and 8 respectively. Written reviews point the same way: 50% of i's written reviews are positive against 0% of Scale Link's.

i ships an update every 14 months, Scale Link every 4 months. The most recent releases landed on June 1, 2026 and June 8, 2026 respectively.

## The numbers

| Metric | i | Scale Link |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (14 ratings)](https://appshunter.io/ios/app/i-scale/id926099803/reviews)** | [1.5 (8 ratings)](https://appshunter.io/ios/app/scale-link/id1170676390/reviews) |
| Number of ratings | **14** | 8 |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 5 MB | 41 MB |
| Requires iOS | 16.0 | **10.3** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Qingying Electronic Technology LLC](https://appshunter.io/developer/926099802) | [Fabricantes de B√°sculas Torrey, S.A. de C.V.](https://appshunter.io/developer/687452627) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-scale/id926099803)

Transform your microscope into a digital one using your phone and a special adapter. Capture images with embedded scale bars and annotations, then easily share them with others.

**Highlights:** Capture digital micrographs, Support magnification up to 5 objectives, Scale-bar embedding and calibration, Stamp remarks, date/time, magnification, Direct email and message sharing

**Features:** macOS Compatibility

**In-app purchases:** none


### Scale Link

[App page](https://appshunter.io/ios/app/scale-link/id1170676390)

Manage, configure, and review sales reports directly from your Torrey scale. Update product information, manage sellers, and set up advertising messages. Customize ticket headers and barcode formats for POS compatibility.

**Highlights:** Manage products and prices, Add new products, Organize sales team, Configure advertising messages, Customize ticket headers, Generate sales reports

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is i free?

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

### Is Scale Link free?

Scale Link is free to download, with no in-app purchases.

### Which has better reviews, i or Scale Link?

i is rated higher. i averages 2.4 out of 5 from 14 ratings, while Scale Link averages 1.5 from 8 ratings.

### Do i or Scale Link have ads?

Neither i nor Scale Link shows ads.

### Which is updated more often, i or Scale Link?

i ships an update every 14 months, and Scale Link every 4 months. Most recently, i was updated on June 1, 2026 and Scale Link on June 8, 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.*