# Flash Doc Scanner vs Fast Clean

The clearest difference is rating: Fast Clean at 4.2 against Flash Doc Scanner's 3.1. Fast Clean also leads on update cadence (every 5 days vs every 2 months) and chart position (#122 vs unranked). On price, review sentiment, ads and in-app purchases there is nothing between them.

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

Fast Clean holds the better App Store score, 4.2 against 3.1. That said, the two scores are not equally well evidenced: Fast Clean has 71 ratings behind it against 10, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.

Flash Doc Scanner ships an update every 2 months, Fast Clean every 5 days. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Flash Doc Scanner | Fast Clean |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (10 ratings)](https://appshunter.io/ios/app/flash-doc-scanner-pdf-maker/id1629410476/reviews) | **[4.2 (71 ratings)](https://appshunter.io/ios/app/fast-clean-ai-storage-cleaner/id6754912718/reviews)** |
| Number of ratings | 10 | **71** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Free | Free |
| Best chart rank | — | **#122** |
| Size | 73 MB | 134 MB |
| Requires iOS | 14 | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JOYWE NETWORK TECH LIMITED](https://appshunter.io/developer/1602822584) | [MARVELS NETWORK TECHNOLOGY LIMITED.CO](https://appshunter.io/developer/1713712693) |

## What reviewers say

### Flash Doc Scanner

[App page](https://appshunter.io/ios/app/flash-doc-scanner-pdf-maker/id1629410476)

This app transforms your iPhone into a powerful scanning tool. Quickly convert physical documents, receipts, and notes into high-quality PDFs. It also features QR code scanning and secure, private use without registration.

**Highlights:** Lightning-fast document scanning, Convert to high-quality PDFs, QR/Barcode recognition, Private and secure, no registration, Batch processing for multiple pages, Easy sharing via email and social media

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

**In-app purchases:** none


### Fast Clean

[App page](https://appshunter.io/ios/app/fast-clean-ai-storage-cleaner/id6754912718)

**Currently charting:** #122 Top Free · Utilities (US App Store)

This utility app uses AI to help you free up storage space on your device by identifying and removing similar photos, screenshots, and duplicate contacts. It also offers tools for compressing media, checking network speed, and managing privacy.

**Highlights:** AI-powered duplicate photo detection, Screenshot and video cleanup, Duplicate contact removal, Private photo and video storage, Photo and video compression, Network speed test, Home screen widgets

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

**In-app purchases:** none


## Frequently asked questions

### Is Flash Doc Scanner free?

Flash Doc Scanner is free to download, with no in-app purchases.

### Is Fast Clean free?

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

### Which has better reviews, Flash Doc Scanner or Fast Clean?

Fast Clean is rated higher. Flash Doc Scanner averages 3.1 out of 5 from 10 ratings, while Fast Clean averages 4.2 from 71 ratings.

### Do Flash Doc Scanner or Fast Clean have ads?

Neither Flash Doc Scanner nor Fast Clean shows ads.

### Which is updated more often, Flash Doc Scanner or Fast Clean?

Flash Doc Scanner ships an update every 2 months, and Fast Clean every 5 days. Most recently, Flash Doc Scanner was updated on November 7, 2026 and Fast Clean on November 9, 2026.

---

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