# OWA vs ec Fast Calc

The clearest difference is rating: ec Fast Calc at 5.0 against OWA's 1.8. ec Fast Calc also leads on update cadence (weekly vs every 5 months). OWA's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, in-app purchases and device support there is nothing between them.

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

ec Fast Calc holds the better App Store score, 5.0 against 1.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

OWA ships an update every 5 months, ec Fast Calc weekly. The most recent releases landed on October 22, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | OWA | ec Fast Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.8 (4 ratings)](https://appshunter.io/ios/app/owa/id1382222125/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ec-fast-calc/id6748915950/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | **Free** | Ad-supported |
| Size | 41 MB | 8 MB |
| Requires iOS | **12.2** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oris SA](https://appshunter.io/developer/1382222124) | [EC Fast Worldwide Limited](https://appshunter.io/developer/1827969035) |

## What reviewers say

### OWA

[App page](https://appshunter.io/ios/app/owa/id1382222125)

This internal tool allows authorized users to manage watch warranties and access details about sold timepieces. Log in to activate warranties and view comprehensive information on Oris watches.

**Highlights:** Activate watch warranties, View sold watch details, Internal Oris application, Manage watch information

**Features:** macOS Compatibility

**In-app purchases:** none


### ec Fast Calc

[App page](https://appshunter.io/ios/app/ec-fast-calc/id6748915950)

This app simplifies daily calculations with an intuitive interface. It allows for effortless bill splitting with friends, group expense management, and date/time calculations. Enjoy powerful features and multi-language support for all your computing needs.

**Highlights:** Bill splitting with friends, Group expense management, Weight and package comparison, Date and time calculations, Multi-language support, Intuitive interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OWA free?

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

### Is ec Fast Calc free?

ec Fast Calc is free to download, with no in-app purchases.

### Which has better reviews, OWA or ec Fast Calc?

ec Fast Calc is rated higher. OWA averages 1.8 out of 5 from 4 ratings, while ec Fast Calc averages 5.0 from 1 ratings.

### Do OWA or ec Fast Calc have ads?

ec Fast Calc shows ads; OWA does not.

### Which is updated more often, OWA or ec Fast Calc?

OWA ships an update every 5 months, and ec Fast Calc weekly. Most recently, OWA was updated on October 22, 2026 and ec Fast Calc on October 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.*