# iDuas vs phase estimation algorithm

The clearest difference is update cadence: iDuas at every 2 weeks against phase estimation algorithm's monthly. iDuas also leads on iOS requirement (7.0 vs 16.0). On price, ads, 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.

iDuas ships an update every 2 weeks, phase estimation algorithm monthly. The most recent releases landed on October 22, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | iDuas | phase estimation algorithm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (15 ratings)](https://appshunter.io/ios/app/iduas-thursday/id387716060/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free | — |
| Size | 18 MB | 12 MB |
| Requires iOS | **7.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ECNET SOLUTIONS INC.](https://appshunter.io/developer/320171762) | [Sungjun Kim](https://appshunter.io/developer/1602461985) |

## What reviewers say

### iDuas

[App page](https://appshunter.io/ios/app/iduas-thursday/id387716060)

Access recommended Thursday devotional texts with Arabic script and English translations. Listen to downloadable MP3 audio versions of Duas and Surahs, and customize your selections.

**Highlights:** Recommended Thursday acts, Arabic text with English translation, Brief overview of each item, Downloadable MP3 audio, Customizable Sura/Dua selection

**Features:** macOS Compatibility

**In-app purchases:** none


### phase estimation algorithm

[App page](https://appshunter.io/ios/app/phase-estimation-algorithm/id6469448415)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iDuas free?

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

### Is phase estimation algorithm free?

phase estimation algorithm is free to download, with no in-app purchases.

### Do iDuas or phase estimation algorithm have ads?

Neither iDuas nor phase estimation algorithm shows ads.

### Which is updated more often, iDuas or phase estimation algorithm?

iDuas ships an update every 2 weeks, and phase estimation algorithm monthly. Most recently, iDuas was updated on October 22, 2026 and phase estimation algorithm on October 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.*