# PolyWorks|DataLoop vs Riff Calendar

The clearest difference is rating: PolyWorks|DataLoop at 5.0 against Riff Calendar's 4.0. PolyWorks|DataLoop also leads on in-app purchases (none vs 3) and iOS requirement (17.0 vs 26.0). Riff Calendar's advantage is update cadence (every 5 days vs every 2 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Riff Calendar sells 3 in-app purchases, starting at $2.99 per month. PolyWorks|DataLoop asks for nothing beyond the download.

PolyWorks|DataLoop holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

PolyWorks|DataLoop ships an update every 2 months, Riff Calendar every 5 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PolyWorks|DataLoop | Riff Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/polyworksdataloop/id1497059661/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/riff-calendar/id6789502725/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 11 MB | 13 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [InnovMetric Software Inc](https://appshunter.io/developer/422670141) | [KJELL MAGNUS REX](https://appshunter.io/developer/6789502727) |

## What reviewers say

### PolyWorks|DataLoop

[App page](https://appshunter.io/ios/app/polyworksdataloop/id1497059661)

Monitor 3D measurement activities and access inspection projects on the go. View detailed results, reports, and navigate color-mapped 3D models directly from your mobile device.

**Highlights:** Monitor 3D measurement activities, Access inspection projects, View inspection results, Access formatted reports, Navigate color-mapped 3D models

**Features:** macOS Compatibility

**In-app purchases:** none


### Riff Calendar

[App page](https://appshunter.io/ios/app/riff-calendar/id6789502725)

This calendar app allows you to zoom in and out of your schedule, viewing a half-year at a glance or a single day hour-by-hour. Events can be edited directly on the calendar, and it integrates with your existing device calendars without requiring an account.

**Highlights:** Zoomable calendar views, Direct event editing, Integrated weather forecasts, Daylight shading, Works with existing calendars, Home and Lock Screen widgets

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $24.99 | per year |
| Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is PolyWorks|DataLoop free?

PolyWorks|DataLoop is free to download, with no in-app purchases.

### Is Riff Calendar free?

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

### Which has better reviews, PolyWorks|DataLoop or Riff Calendar?

PolyWorks|DataLoop is rated higher. PolyWorks|DataLoop averages 5.0 out of 5 from 2 ratings, while Riff Calendar averages 4.0 from 1 ratings.

### Do PolyWorks|DataLoop or Riff Calendar have ads?

Neither PolyWorks|DataLoop nor Riff Calendar shows ads.

### Which is updated more often, PolyWorks|DataLoop or Riff Calendar?

PolyWorks|DataLoop ships an update every 2 months, and Riff Calendar every 5 days. Most recently, PolyWorks|DataLoop was updated on November 3, 2026 and Riff Calendar on October 31, 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.*