# Flow Conversions vs TELEDYNE ISCO FlowCalc

The clearest difference is rating: Flow Conversions at 5.0 against TELEDYNE ISCO FlowCalc's 4.5. Flow Conversions also leads on ads (none vs shown) and monetization model (free vs ad-supported). On price, review sentiment, ratings volume and update cadence there is nothing between them.

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

Flow Conversions holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Flow Conversions ships an update every 8 days, TELEDYNE ISCO FlowCalc weekly. The most recent releases landed on October 16, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Flow Conversions | TELEDYNE ISCO FlowCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flow-conversions/id1276206364/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/teledyne-isco-flowcalc/id6504916802/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 8 days | **Weekly** |
| Monetization | **Free** | Ad-supported |
| Size | 12 MB | 26 MB |
| Requires iOS | **10.3** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jeff Evans](https://appshunter.io/developer/1155207587) | [FutureSight Studios Ltd](https://appshunter.io/developer/1752834411) |

## What reviewers say

### Flow Conversions

[App page](https://appshunter.io/ios/app/flow-conversions/id1276206364)

Easily convert water flow rates between various units of measurement. This utility app provides a straightforward way to calculate and understand different flow rate values.

**Highlights:** Calculate flow rate, Multiple units of measure, Water flow conversions, Simple interface

**Features:** macOS Compatibility

**In-app purchases:** none


### TELEDYNE ISCO FlowCalc

[App page](https://appshunter.io/ios/app/teledyne-isco-flowcalc/id6504916802)

This utility app provides quick and accurate open channel flow rate calculations for field or office use. Select your measurement method, enter dimensions and head/velocity, and receive instant results. It supports multiple flow methods, area-velocity calculations, and unit switching.

**Highlights:** Instant flow rate calculations, Multiple weir and flume types, Area-velocity mode for pipes, Save favorite site setups, Imperial and metric unit support, Based on ISCO Handbook formulas

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flow Conversions free?

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

### Is TELEDYNE ISCO FlowCalc free?

TELEDYNE ISCO FlowCalc is free to download, with no in-app purchases.

### Which has better reviews, Flow Conversions or TELEDYNE ISCO FlowCalc?

Flow Conversions is rated higher. Flow Conversions averages 5.0 out of 5 from 1 ratings, while TELEDYNE ISCO FlowCalc averages 4.5 from 2 ratings.

### Do Flow Conversions or TELEDYNE ISCO FlowCalc have ads?

TELEDYNE ISCO FlowCalc shows ads; Flow Conversions does not.

### Which is updated more often, Flow Conversions or TELEDYNE ISCO FlowCalc?

Flow Conversions ships an update every 8 days, and TELEDYNE ISCO FlowCalc weekly. Most recently, Flow Conversions was updated on October 16, 2026 and TELEDYNE ISCO FlowCalc on October 2, 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.*