# i vs ISM

The clearest difference is review sentiment: ISM at 100% against i's 20%. ISM also leads on rating (5.0 vs 2.7) and iOS requirement (12.0 vs 16.0). i's advantage is ratings volume (35 vs 9). On price, update cadence, 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.

ISM holds the better App Store score, 5.0 against 2.7. Both are backed by a comparable volume of ratings — 35 and 9 respectively. Written reviews point the same way: 20% of i's written reviews are positive against 100% of ISM's.

i ships an update every 14 months, ISM every 7 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | i | ISM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (35 ratings)](https://appshunter.io/ios/app/i-seeing/id926099814/reviews) | **[5.0 (9 ratings)](https://appshunter.io/ios/app/ism-wf200/id6698873286/reviews)** |
| Number of ratings | **35** | 9 |
| Positive reviews | 20.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 7 months** |
| Monetization | Free | Free |
| Size | 6 MB | 2 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Qingying Electronic Technology LLC](https://appshunter.io/developer/926099802) | [Insize Co., Ltd.](https://appshunter.io/developer/1489274019) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-seeing/id926099814)

Transform your smartphone into a powerful magnification tool. Observe and record microscopic details with your phone's camera and a macro lens. Measure objects with a scale bar and add notes to your digital micrographs.

**Highlights:** Professional magnification tool, Record digital micrographs, Optical magnification, Up to 10x digital zoom, Scale bar for measurement, Add notes and remarks, Direct photo sharing

**Features:** macOS Compatibility

**In-app purchases:** none


### ISM

[App page](https://appshunter.io/ios/app/ism-wf200/id6698873286)

Explore the microscopic world with a WiFi digital microscope. Capture images, record videos, and perform measurements. Ideal for educational, research, and hobbyist use.

**Highlights:** Microscopic observation, Image capture, Video recording, Measurement tools, WiFi microscope control

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is i free?

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

### Is ISM free?

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

### Which has better reviews, i or ISM?

ISM is rated higher. i averages 2.7 out of 5 from 35 ratings, while ISM averages 5.0 from 9 ratings.

### Do i or ISM have ads?

Neither i nor ISM shows ads.

### Which is updated more often, i or ISM?

i ships an update every 14 months, and ISM every 7 months. Most recently, i was updated on November 1, 2026 and ISM on October 30, 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.*