# FSS Window Pro vs PairInk

The clearest difference is update cadence: PairInk at every 6 days against FSS Window Pro's every 7 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. FSS Window Pro sells 1 in-app purchase, starting at $64.99 per month and PairInk sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

FSS Window Pro ships an update every 7 months, PairInk every 6 days. The most recent releases landed on November 3, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | FSS Window Pro | PairInk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (7 ratings)](https://appshunter.io/ios/app/fss-window-pro/id6451383847/reviews)** | — |
| Number of ratings | **7** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 days** |
| Monetization | Subscription | — |
| Size | 187 MB | 27 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Cereus Holdings, LLC](https://appshunter.io/developer/1697854660) | [Jawad Jaber](https://appshunter.io/developer/828202845) |

## What reviewers say

### FSS Window Pro

[App page](https://appshunter.io/ios/app/fss-window-pro/id6451383847)

Streamline window treatment sales consultations with systematic measuring, automatic dimension capture via Bluetooth laser devices, and detailed note-taking.  Generate reports, export data, and manage jobsite photos from a cloud-based portal.

**Highlights:** Systematic window measuring, Automatic dimension capture (Bluetooth laser), Product and installation note capture, Visual dimension guide, Attach and take window pictures, Cloud data storage, Website portal for reports and exports

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $64.99 | per month |


### PairInk

[App page](https://appshunter.io/ios/app/pairink-whiteboard-and-notes/id6814097129)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7-day Trial | Free | one-time |
| PairInk Full Unlock | $39.00 | one-time |


## Frequently asked questions

### Is FSS Window Pro free?

FSS Window Pro is free to download, with in-app purchases available.

### Is PairInk free?

PairInk is free to download, with in-app purchases available.

### Do FSS Window Pro or PairInk have ads?

Neither FSS Window Pro nor PairInk shows ads.

### Which is updated more often, FSS Window Pro or PairInk?

FSS Window Pro ships an update every 7 months, and PairInk every 6 days. Most recently, FSS Window Pro was updated on November 3, 2026 and PairInk on November 10, 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.*