# Spectangle Pro vs Bill Tracker Cal

The clearest difference is update cadence: Bill Tracker Cal at every 6 days against Spectangle Pro's every 5 weeks. Spectangle Pro's advantage is iOS requirement (14.0 vs 18.2). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Spectangle Pro ships an update every 5 weeks, Bill Tracker Cal every 6 days. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Spectangle Pro | Bill Tracker Cal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/spectangle-pro/id978475340/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 6 days** |
| Monetization | Free | Free |
| Size | 2.2 GB | 4 MB |
| Requires iOS | **14.0** | 18.2 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Hoya Lens Of Chicago, Inc.](https://appshunter.io/developer/536627155) | [Josh Kinney](https://appshunter.io/developer/1469812142) |

## What reviewers say

### Spectangle Pro

[App page](https://appshunter.io/ios/app/spectangle-pro/id978475340)

This app uses a single image to capture precise eyewear measurements, aiding in frame selection and demonstrating lens benefits. It offers interactive augmented reality demos for various lens options and coatings.

**Highlights:** Eyewear measurements from one image, Frame selection comparison, Interactive lens demonstrations, Augmented reality lens demos, Multi-lingual support

**In-app purchases:** none


### Bill Tracker Cal

[App page](https://appshunter.io/ios/app/bill-tracker-cal/id6743374046)

Manage your bills effortlessly with this straightforward utility. Quickly add recurring or one-time bills, view monthly overviews, and easily edit or delete entries. Stay organized and stress-free by paying on time.

**Highlights:** Add new bills easily, Set recurring or one-time bills, Monthly bill overview, Detailed daily bill view, Pay, edit, or delete bills

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Spectangle Pro free?

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

### Is Bill Tracker Cal free?

Bill Tracker Cal is free to download, with no in-app purchases.

### Do Spectangle Pro or Bill Tracker Cal have ads?

Neither Spectangle Pro nor Bill Tracker Cal shows ads.

### Which is updated more often, Spectangle Pro or Bill Tracker Cal?

Spectangle Pro ships an update every 5 weeks, and Bill Tracker Cal every 6 days. Most recently, Spectangle Pro was updated on October 2, 2026 and Bill Tracker Cal on September 30, 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.*