# ISM vs FuelFlow Driver

The clearest difference is update cadence: FuelFlow Driver at every 2 months against ISM's every 7 months. ISM's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

ISM ships an update every 7 months, FuelFlow Driver every 2 months. The most recent releases landed on October 23, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | ISM | FuelFlow Driver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/ism-wf200/id6698873286/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 2 MB | 45 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Insize Co., Ltd.](https://appshunter.io/developer/1489274019) | [FuelFlow, LLC](https://appshunter.io/developer/1855867400) |

## What reviewers say

### 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


### FuelFlow Driver

[App page](https://appshunter.io/ios/app/fuelflow-driver/id6755723494)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ISM free?

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

### Is FuelFlow Driver free?

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

### Do ISM or FuelFlow Driver have ads?

Neither ISM nor FuelFlow Driver shows ads.

### Which is updated more often, ISM or FuelFlow Driver?

ISM ships an update every 7 months, and FuelFlow Driver every 2 months. Most recently, ISM was updated on October 23, 2026 and FuelFlow Driver on October 28, 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.*