# Image Bulk Saver / iDig vs ThreadMaster

The clearest difference is rating: ThreadMaster at 5.0 against Image Bulk Saver / iDig's 4.2. Image Bulk Saver / iDig's advantage is review sentiment (53% vs 33%) and ratings volume (151 vs 11). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Image Bulk Saver / iDig sells 2 in-app purchases, starting at $3.49 per month and ThreadMaster sells 14 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ThreadMaster holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Image Bulk Saver / iDig has 151 ratings behind it against 11, so its average is the more settled of the two. Written reviews complicate that: 53% of Image Bulk Saver / iDig's written reviews are positive against 33% of ThreadMaster's, so the app with the better star average is not the one people write more warmly about.

Image Bulk Saver / iDig ships an update every 3 days, ThreadMaster every 4 days. The most recent releases landed on September 21, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Image Bulk Saver / iDig | ThreadMaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (151 ratings)](https://appshunter.io/ios/app/image-bulk-saver-idig/id1208127205/reviews) | **[5.0 (11 ratings)](https://appshunter.io/ios/app/threadmaster/id6455370741/reviews)** |
| Number of ratings | **151** | 11 |
| Positive reviews | **52.6% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Every 4 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 47 MB | 101 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Koichiro Umemiya](https://appshunter.io/developer/1208127204) | [Kazumasa Shimomura](https://appshunter.io/developer/1110502851) |

## What reviewers say

### Image Bulk Saver / iDig

[App page](https://appshunter.io/ios/app/image-bulk-saver-idig/id1208127205)

Easily download and organize multiple images from the web. Preview, filter, and sort your saved pictures, with options to convert them to PDF or copy them to your camera roll. Enjoy a modern design with ad blocking.

**Highlights:** Download multiple web images, Organize images in app folders, Preview thumbnails and slideshow, Filter images by size and link status, Auto-search numbered images, Convert images to PDF, Ad blocking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium  (1 month) | $3.49 | per month |
| Premium / Turn off ads | $19.99 | one-time |


### ThreadMaster

[App page](https://appshunter.io/ios/app/threadmaster/id6455370741)

Browse multiple forums and communities with advanced features like NG filters, unread tracking, and dark mode. Save favorite threads, track browsing history, and participate in discussions. Optimized for fast, organized reading on various devices.

**Highlights:** Multi-forum browsing, NG filters (threads, boards, regex), Unread tracking, Favorites and history, Dark mode, Thumbnail and link previews, Thread creation and posting

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

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIPプラン | $0.99 | per month |
| VIPプラン | $9.99 | per year |
| Donation | $0.29 | one-time |
| Donation | $0.49 | one-time |
| Donation | $2.99 | one-time |
| Donation | $5.99 | one-time |
| Donation | $9.99 | one-time |
| Donation | $11.99 | one-time |
| Donation | $19.99 | one-time |
| Donation | $39.99 | one-time |
| Donation | $59.99 | one-time |
| Donation | $199.99 | one-time |
| Donation | $299.99 | one-time |
| Donation | $599.99 | one-time |


## Frequently asked questions

### Is Image Bulk Saver / iDig free?

Image Bulk Saver / iDig is free to download, with in-app purchases available.

### Is ThreadMaster free?

ThreadMaster is free to download, with in-app purchases available.

### Which has better reviews, Image Bulk Saver / iDig or ThreadMaster?

ThreadMaster is rated higher. Image Bulk Saver / iDig averages 4.2 out of 5 from 151 ratings, while ThreadMaster averages 5.0 from 11 ratings.

### Do Image Bulk Saver / iDig or ThreadMaster have ads?

Both Image Bulk Saver / iDig and ThreadMaster show ads.

### Which is updated more often, Image Bulk Saver / iDig or ThreadMaster?

Image Bulk Saver / iDig ships an update every 3 days, and ThreadMaster every 4 days. Most recently, Image Bulk Saver / iDig was updated on September 21, 2026 and ThreadMaster on September 23, 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.*