# UpCall vs Düdüğüm

The clearest difference is review sentiment: Düdüğüm at 86% against UpCall's 16%. Düdüğüm also leads on rating (4.7 vs 3.9) and ads (none vs shown). UpCall's advantage is ratings volume (89 vs 3). On price, update cadence, 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.

Düdüğüm holds the better App Store score, 4.7 against 3.9. That said, the two scores are not equally well evidenced: UpCall has 89 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 16% of UpCall's written reviews are positive against 86% of Düdüğüm's.

UpCall ships an update every 2 months, Düdüğüm every 6 weeks. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | UpCall | Düdüğüm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (89 ratings)](https://appshunter.io/ios/app/upcall/id1149307476/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/dudugum/id1538329721/reviews)** |
| Number of ratings | **89** | 3 |
| Positive reviews | 15.7% of reviews | **86.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 42 MB | 25 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Turkcell Iletisim Hizmetleri A.S.](https://appshunter.io/developer/305642482) | [HDS OTOMASYON GUVENLIK VE YAZILIM TEKNOLOJILERI SANAYI TICARET LIMITED SIRKETI](https://appshunter.io/developer/1523706871) |

## What reviewers say

### UpCall

[App page](https://appshunter.io/ios/app/upcall/id1149307476)

Identify unknown callers and find contact information for numbers not saved in your phone. Personalize your calls with custom tones, photos, and notes. Block spam and manage your availability with a do-not-disturb feature.

**Highlights:** Unknown caller identification, Advanced search for contacts, Spam call warnings, Do Not Disturb mode, Customizable caller tones, Add photos, stickers, and notes to calls

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

**In-app purchases:** none


### Düdüğüm

[App page](https://appshunter.io/ios/app/dudugum/id1538329721)

This app generates a whistle sound to signal your location in emergencies or when trapped. It can also send an SMS to pre-selected contacts to inform them of your safety status. The application is free and ad-free, developed for humanitarian purposes.

**Highlights:** Generates whistle sound, Sends location SMS, Pre-set contact alerts, Ad-free experience, Humanitarian purpose

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is UpCall free?

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

### Is Düdüğüm free?

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

### Which has better reviews, UpCall or Düdüğüm?

Düdüğüm is rated higher. UpCall averages 3.9 out of 5 from 89 ratings, while Düdüğüm averages 4.7 from 3 ratings.

### Do UpCall or Düdüğüm have ads?

UpCall shows ads; Düdüğüm does not.

### Which is updated more often, UpCall or Düdüğüm?

UpCall ships an update every 2 months, and Düdüğüm every 6 weeks. Most recently, UpCall was updated on November 6, 2026 and Düdüğüm on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*