ThreadBook vs AcuAssist
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ThreadBook
Manage your sewing, needlework, and embroidery threads with a comprehensive digital library. Track your existing threads, create shopping lists, and find perfect color matches using advanced search or your device's camera. Instantly convert thread colors between brands and types.
- Extensive thread library (50,000+ threads)
- Track 'My Threads' and 'Shopping List'
- Search by thread number or color
- Color matching via camera or photo
- Instant cross-brand thread conversion
- Automatic library updates
- Cross-device synchronization
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Description ThreadBook is the ideal tool for managing the threads you use for sewing, needlework, or embroidery. It contains a library of more than 50,000 threads from over 600 different manufacturers, available with a touch of your finger. Using ThreadBook you can: * Set your favorite brands to narrow matching choices * Track the threads you have in the “My Threads” collection * Track the threads you need in the “Shopping List” collection * Find threads with a particular thread number, including partial numbers * Find threads that match your chosen color * Find threads that match any color using the camera on your device or a previously made photo * Instantly create a chart to convert any brand and type of thread to a matching color in any other brand and type * Create your own charts for converting any brand to the best match in one or more other brands * Convert a list of thread colors, such as that often provided with embroidery designs, to any brand and type Additional features include: * One tap instant match for any thread * Automatic updating of the library as new threads are added * Your “My Threads” and “Shopping List” collections are synchronized between all your devices
AcuAssist
This app guides users through sewing machine operation with step-by-step videos and helpful tips. It can connect to compatible machines wirelessly to provide real-time instructions and inspiration, acting as a creative concierge for sewers of all levels.
- Step-by-step illustrative videos
- Basic sewing machine knowledge
- Wireless connection to sewing machines
- Stitch chart and presser foot descriptions
- Inspiration for creative projects
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AcuAssist is an app that explains how to use the sewing machine and provides useful tips. By connecting the sewing machine to AcuAssist via a router, and all your questions will be answered. AcuAssist can also be used without a sewing machine. The app acts as a concierge, offering support and inspiring creativity. AcuAssist is compatible with the following sewing machine models: Please check the following web page : https://www7.janome.co.jp/global/softupdate/acuassist/ Using Wireless LAN (linking with sewing machine): * From the lists within the app, built-in stitches and designs can be selected and displayed on the sewing machine. * By connecting the sewing machine and app using a router, instructions and know-how related to the status of the sewing machine appear in the app. Features: * Offers basic knowledge on how to use the sewing machine. * Step-by-step illustrative videos for learning special sewing methods are available. * Anyone of any generation can learn about sewing machine operation. Other functions: * Easy-to-understand instructions using videos with illustrations * Presser foot descriptions (including optional items) * Includes a stitch chart containing the sewing machine's built-in stitches Usage conditions: * Mobile device is connected to the network. Supported languages are as follows: * English * French * Spanish * Changing language settings Language settings can be adjusted through device settings (Settings-> General-> Language & Region). (Method may vary depending on device.)
Screenshots
Verdict
The clearest difference is price: AcuAssist at Free against ThreadBook's $14.99. AcuAssist also leads on iOS requirement (14.0 vs 17.1). ThreadBook's advantage is rating (4.2 vs 3.0) and update cadence (monthly vs every 29 months). On ads, in-app purchases, monetization model and device support 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
AcuAssist is free to download; ThreadBook costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ThreadBook holds the better App Store score, 4.2 against 3.0. That said, the two scores are not equally well evidenced: ThreadBook has 52 ratings behind it against 2, so its average is the more settled of the two.
ThreadBook ships an update monthly, AcuAssist every 29 months. The most recent releases landed on September 24, 2026 and September 12, 2026 respectively.
| Parameter | ThreadBook | AcuAssist |
|---|---|---|
| Price | $14.99 | Free — better |
| Rating | 4.2 (52 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 65.9% of reviews | — |
| Number of ratings | 52 — better | 2 |
| Update frequency | Monthly — better | Every 29 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | #188 — better | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.1 | 14.0 — better |
| Further details — not scored | ||
| Size | 138 MB | 76 MB |
| Age rating | 4+ | 4+ |
| Developer | Software Miracles | JANOME Corporation |
Customer experience
ThreadBook
AcuAssist
In-app purchases
ThreadBook
No in-app purchases
AcuAssist
No in-app purchases








