Comparison

Image Bulk Saver / iDig vs ThreadMaster

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Image Bulk Saver / iDig

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
Read full description

Save images you find on the web — all at once, and effortlessly. Whether it's a handful of pictures or thousands, iDig lets you download and organize them with ease. 【Download】 - Download all images on a web page at once - Select only the images you want - Auto-detect numbered image sequences (e.g. 001.jpg, 002.jpg) - Filter to download only images that are linked 【Organize】 - Saved images are automatically organized into folders - Fast even with thousands of folders and tens of thousands of images - Merge multiple folders together - Browse with thumbnails and a slideshow - Filter by image size (L/M/S) 【Comfort】 - Free built-in ad blocking (no purchase required) - Dark mode support - Retina display support - Full iPad support - Xscreen compatible 【More】 - Convert saved images into a PDF file - Copy images to your Camera Roll - Clean, modern, distraction-free design Trusted by users since its release in 2017. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ThreadMaster

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
Read full description

◆ Multi-Forum Viewer with Advanced Features ThreadMaster is a powerful forum viewer for browsing threads across multiple boards and communities. It includes advanced features like NG filters, unread tracking, differential loading, and dark mode. Whether you check daily updates or follow long discussions, ThreadMaster keeps reading fast and organized. ◆ Main Features - Favorites: Save threads and boards for easy access. - Browsing History: Track your viewed threads. - Thread Creation: Start your own discussions. - Posting: Participate in discussions by posting your comments. - Thumbnail Display: View image URLs as thumbnails. - Anchor Link Preview: Preview links before clicking. - ID Post List: View posts grouped by each user ID. - Dark Mode: Comfortable browsing at night. - iPad Support: Optimized for larger screens. - Highlight Own Posts: Easily find your comments. - Cache Deletion: Free up storage space. - Sage Button: Don't bump threads when you post. - Differential Reading: Update threads with new posts only. - Unread Counts: See the number of unread posts in favorites and thread lists. - Read Items Grouping: Organize read items in thread lists. - Automatic Image Loading: Manage image loading preferences. - Mosaic Feature: Add mosaics to images. - Rich Thread Sorting: Various sorting options for threads. - Regular Expression NG: Filter threads by body, email, or name. - Board NG: Filter out unwanted boards. - Thread NG: Filter out unwanted threads. - In-thread Search: Find specific content within threads. ◆ Supported Services - Supports multiple forum and board services. - Additional compatibility updates are delivered continuously. *We plan to add more features based on your requests.* ◆ Bug Reports We welcome feedback and bug reports within the app or through the following forms: - Feedback: https://forms.gle/GfPPr37Cyya1msGX9 - Please use this instead of app reviews. - Bug Reports: https://forms.gle/ndAVLvmPbXo25pEEA - Current bugs are listed here. ◆ Terms of Service For detailed terms, please refer to: https://hackmd.io/W8T2gLO-TRmQj-5nxfocdw

Screenshots

Image Bulk Saver / iDig4 screens
ThreadMaster4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Image Bulk Saver / iDig versus ThreadMaster: the parameters behind the verdict, then further details
ParameterImage Bulk Saver / iDigThreadMaster
PriceFreeFree
Rating4.2 (151 ratings)5.0 (11 ratings) — better
Positive reviews52.6% of reviews — better33.3% of reviews
Number of ratings151 — better11
Update frequencyEvery 3 days — betterEvery 4 days
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size47 MB101 MB
Age rating17+17+
DeveloperKoichiro UmemiyaKazumasa Shimomura

Customer experience

Image Bulk Saver / iDig

All ratings151 ratings
Positive78.8%
Neutral7.3%
Negative13.9%
Written reviews114 reviews
Positive52.6%
Neutral14.0%
Negative33.3%

ThreadMaster

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews51 reviews
Positive33.3%
Neutral13.7%
Negative52.9%

In-app purchases

2 purchases

Image Bulk Saver / iDig

Subscriptions1
  • Premium (1 month)$3.491 Month
One-time1
  • Premium / Turn off ads$19.99
14 purchases

ThreadMaster

Subscriptions2
  • VIPプラン7 Days trial$0.991 Month
  • VIPプラン7 Days trial$9.991 Year
One-time12
  • Donation$0.29
  • Donation$0.49
  • Donation$2.99
Show 9 more
  • Donation$5.99
  • Donation$9.99
  • Donation$11.99
  • Donation$19.99
  • Donation$39.99
  • Donation$59.99
  • Donation$199.99
  • Donation$299.99
  • Donation$599.99

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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