JD Memory vs Formula sorting calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JD Memory
Manage files and media stored on your Apple USB Drive directly from your device. Browse photos, videos, and music with thumbnail previews, organize documents, and share content easily. Enjoy slideshows for photos and advanced playback options for music.
- Media thumbnail display
- List/thumbnail view
- File sharing
- File operations (copy, cut, delete, create, rename)
- Local/iStorage data transmission
- Photo slideshow
- Music playback with artwork and repeat modes
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“JD Memory” is an application software for Apple USB Drive. •The main interface displays Media thumbnails :video, photo, music • Supports list / thumbnail view, support sharing operation for photos, music and documents • Support copy/cut/delete/create/rename operation and support local/iStorage data transmission . • Support to play the photos by slideshow mode • Support music artwork shows, repeat mode setting, time line drag operation • Document: Support formats of .keynote、.numbers、.page、.xls/.xlsx, .doc/docx、pdf、txt、ppt/pptx
Formula sorting calculator
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Displays the most recent calculation formula for the same calculation from the calculation history.
Screenshots
Verdict
The clearest difference is ads: JD Memory at none against Formula sorting calculator's shown. JD Memory also leads on iOS requirement (9.0 vs 15.8.3). Formula sorting calculator's advantage is update cadence (every 2 weeks vs every 3 months). On price, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
JD Memory ships an update every 3 months, Formula sorting calculator every 2 weeks. The most recent releases landed on October 9, 2026 and October 3, 2026 respectively.
| Parameter | JD Memory | Formula sorting calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (32 ratings) — better | — |
| Positive reviews | 17.9% of reviews | — |
| Number of ratings | 32 — better | — |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.8.3 |
| Further details — not scored | ||
| Size | 107 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | 晓明 徐 | Hideaki Uchikoshi |
In-app purchases
JD Memory
No in-app purchases
Formula sorting calculator
No in-app purchases
Questions
Is JD Memory free?
Is Formula sorting calculator free?
Do JD Memory or Formula sorting calculator have ads?
Which is updated more often, JD Memory or Formula sorting calculator?
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