# Flow Test Calculator vs FormLink

Flow Test Calculator and FormLink both sit at 4.1 stars, but that hides the real split: 69% of Flow Test Calculator's written reviews are positive against 0% of FormLink's. Flow Test Calculator also leads on ratings volume (63 vs 4). FormLink's advantage is in-app purchases (none vs 4) and update cadence (monthly vs every 90 months). On price, rating, ads and device support there is nothing between them.

Both are free to download. Flow Test Calculator sells 4 one-off in-app purchases. FormLink asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.1 for Flow Test Calculator against 4.0 for FormLink. That said, the two scores are not equally well evidenced: Flow Test Calculator has 63 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 69% of Flow Test Calculator's written reviews are positive against 0% of FormLink's.

Flow Test Calculator ships an update every 90 months, FormLink monthly. The most recent releases landed on September 18, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Flow Test Calculator | FormLink |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (63 ratings)](https://appshunter.io/ios/app/flow-test-calculator/id853530759/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/formlink/id1622429554/reviews) |
| Number of ratings | **63** | 4 |
| Positive reviews | **68.8% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 90 months | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 2 MB | 1 MB |
| Requires iOS | 14.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Larry Owens](https://appshunter.io/developer/496138296) | [Inspect Point Holdings, LLC](https://appshunter.io/developer/1774310924) |

## What reviewers say

### Flow Test Calculator

[App page](https://appshunter.io/ios/app/flow-test-calculator/id853530759)

Calculate hydrant flow rates and determine maximum water system flow. This tool uses a standard variation of the Hazen-Williams formula for calculations. Imperial units are currently supported, with metric coming soon.

**Highlights:** Hydrant flow rate calculation, Maximum water system flow determination, Hazen-Williams formula implementation, Imperial unit support, Future metric unit support

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Disable Purchase Requests | $0.99 | one-time |
| Disable Purchase Requests 1.99 | $1.99 | one-time |
| Disable Purchase Request 4.99 | $4.99 | one-time |
| Disable Purchase Requests 9.99 | $9.99 | one-time |


### FormLink

[App page](https://appshunter.io/ios/app/formlink/id1622429554)

Streamline fire and life safety inspections with digital forms and issue tracking. Generate professional PDF reports quickly and manage compliance. Access data anywhere, online or offline, and easily switch from paper-based processes.

**Highlights:** Digital inspection forms, Issue tracking and deficiency management, Professional PDF report generation, Offline form completion, Custom form building tools, Inspection due date tracking

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flow Test Calculator free?

Flow Test Calculator is free to download, with in-app purchases available.

### Is FormLink free?

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

### Which has better reviews, Flow Test Calculator or FormLink?

Flow Test Calculator is rated higher. Flow Test Calculator averages 4.1 out of 5 from 63 ratings, while FormLink averages 4.0 from 4 ratings.

### Do Flow Test Calculator or FormLink have ads?

Neither Flow Test Calculator nor FormLink shows ads.

### Which is updated more often, Flow Test Calculator or FormLink?

Flow Test Calculator ships an update every 90 months, and FormLink monthly. Most recently, Flow Test Calculator was updated on September 18, 2026 and FormLink on September 23, 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.*