# Calculator Sci Unit Converter vs Expiry Tracker

The clearest difference is price: Expiry Tracker at Free against Calculator Sci Unit Converter's $1.99. Expiry Tracker also leads on update cadence (every 8 days vs monthly). Calculator Sci Unit Converter's advantage is rating (4.0 vs 1.0) and iOS requirement (13.0 vs 17.0). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Expiry Tracker is free to download; Calculator Sci Unit Converter costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calculator Sci Unit Converter holds the better App Store score, 4.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Calculator Sci Unit Converter ships an update monthly, Expiry Tracker every 8 days. The most recent releases landed on October 11, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Calculator Sci Unit Converter | Expiry Tracker |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/calculator-sci-unit-converter/id6772422667/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/expiry-tracker-warranty-docs/id6795165681/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Paid | **Freemium** |
| Size | 25 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Xiamen City Fanyou Network Technology Co., Ltd.](https://appshunter.io/developer/1842524161) | [Xiamen Fengyun Network Technology Co., Ltd.](https://appshunter.io/developer/1443469599) |

## What reviewers say

### Calculator Sci Unit Converter

[App page](https://appshunter.io/ios/app/calculator-sci-unit-converter/id6772422667)

This app offers a robust calculator with both standard and scientific functions. It includes a unit converter for various measurements and currency, plus helpful shortcuts for percentages, taxes, and tips. All calculations are saved locally for easy access.

**Highlights:** Standard and scientific calculator modes, Unit conversion for length, weight, temperature, currency, Full calculation history log, Percentage, tax, and tip calculation shortcuts, Offline functionality, Optimized for phone and tablet

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Expiry Tracker

[App page](https://appshunter.io/ios/app/expiry-tracker-warranty-docs/id6795165681)

Organize and track all your time-sensitive documents like warranties, subscriptions, and IDs. Get reminders for upcoming due dates and monitor your spending on these items. Data is kept private on your device with optional iCloud sync.

**Highlights:** Track warranties, subscriptions, IDs, and leases, Due date dashboard with urgency grouping, Monitor daily and monthly spending, Calendar and timeline view of bills, Customizable advance reminders, Home screen widgets for quick overview, Data export and local data clearing

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Calculator Sci Unit Converter free?

Calculator Sci Unit Converter costs $1.99, with no in-app purchases.

### Is Expiry Tracker free?

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

### Which has better reviews, Calculator Sci Unit Converter or Expiry Tracker?

Calculator Sci Unit Converter is rated higher. Calculator Sci Unit Converter averages 4.0 out of 5 from 2 ratings, while Expiry Tracker averages 1.0 from 1 ratings.

### Do Calculator Sci Unit Converter or Expiry Tracker have ads?

Neither Calculator Sci Unit Converter nor Expiry Tracker shows ads.

### Which is updated more often, Calculator Sci Unit Converter or Expiry Tracker?

Calculator Sci Unit Converter ships an update monthly, and Expiry Tracker every 8 days. Most recently, Calculator Sci Unit Converter was updated on October 11, 2026 and Expiry Tracker on October 25, 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.*