# appodixi vs Comtel Sirens

The clearest difference is update cadence: Comtel Sirens at every 2 days against appodixi's every 5 months. 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.

appodixi ships an update every 5 months, Comtel Sirens every 2 days. The most recent releases landed on June 4, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | appodixi | Comtel Sirens |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 32 MB | 67 MB |
| Requires iOS | **13.0** | 13.4 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [INDEPENDENT AUTHORITY FOR PUBLIC REVENUE](https://appshunter.io/developer/1645044373) | [ProgressNet](https://appshunter.io/developer/1509775083) |

## What reviewers say

### appodixi

[App page](https://appshunter.io/ios/app/appodixi/id1645044371)

Verify the authenticity and content of Greek cash register receipts by scanning QR codes. Report discrepancies or unverified receipts anonymously or with your name for inspection.

**Highlights:** Scan receipts with QR codes, Verify receipt authenticity, Check receipt content, Report discrepancies, Anonymous reporting option

**Features:** macOS Compatibility

**In-app purchases:** none


### Comtel Sirens

[App page](https://appshunter.io/ios/app/comtel-sirens/id6739497084)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is appodixi free?

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

### Is Comtel Sirens free?

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

### Do appodixi or Comtel Sirens have ads?

Neither appodixi nor Comtel Sirens shows ads.

### Which is updated more often, appodixi or Comtel Sirens?

appodixi ships an update every 5 months, and Comtel Sirens every 2 days. Most recently, appodixi was updated on June 4, 2026 and Comtel Sirens on September 12, 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.*