# DupeDetective Receipt Scanner vs Sinkstack

The clearest difference is price: DupeDetective Receipt Scanner at Free against Sinkstack's $0.99. Sinkstack's advantage is in-app purchases (none vs 1). On update cadence, ads, device support and iOS requirement there is nothing between them.

DupeDetective Receipt Scanner is free to download; Sinkstack costs $0.99 up front. DupeDetective Receipt Scanner sells 1 in-app purchase, starting at $4.99 per year. Sinkstack asks for nothing beyond the download.

DupeDetective Receipt Scanner ships an update every 8 days, Sinkstack every 6 days. The most recent releases landed on October 18, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | DupeDetective Receipt Scanner | Sinkstack |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/dupedetective-receipt-scanner/id6773174333/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 6 days** |
| Monetization | Free | — |
| Size | 2 MB | 6 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Marcus Chaffee](https://appshunter.io/developer/6773174335) | [Robert Corbin](https://appshunter.io/developer/1890247992) |

## What reviewers say

### DupeDetective Receipt Scanner

[App page](https://appshunter.io/ios/app/dupedetective-receipt-scanner/id6773174333)

This app acts as your personal receipt auditor, quickly identifying and flagging duplicate charges on your grocery receipts. It uses on-device AI to scan paper or digital receipts, helping you get refunds for costly billing errors. It also includes a smart grocery list manager and receipt history for organized shopping and spending tracking.

**Highlights:** Instant duplicate detection, On-device AI scanning, Smart grocery list manager, Receipt history and organization, Fast and easy to use, Light and dark mode support

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DupeDetectivePro | $4.99 | per year |


### Sinkstack

[App page](https://appshunter.io/ios/app/sinkstack-paycheck-budget/id6776308197)

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

**In-app purchases:** none


## Frequently asked questions

### Is DupeDetective Receipt Scanner free?

DupeDetective Receipt Scanner is free to download, with in-app purchases available.

### Is Sinkstack free?

Sinkstack costs $0.99, with no in-app purchases.

### Do DupeDetective Receipt Scanner or Sinkstack have ads?

Neither DupeDetective Receipt Scanner nor Sinkstack shows ads.

### Which is updated more often, DupeDetective Receipt Scanner or Sinkstack?

DupeDetective Receipt Scanner ships an update every 8 days, and Sinkstack every 6 days. Most recently, DupeDetective Receipt Scanner was updated on October 18, 2026 and Sinkstack 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.*