Comparison

Chrono Assistant vs PaperCode

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

Head to head
About

Chrono Assistant

Features
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Record time, master time, and live a self-disciplined life Our App can only do the first of the above three points. We hope that you can get the other two points by yourself after using our App~ [This is a simple time recording assistant] - You can continue to time even if you turn off the background - All you need to do is to remember to open the timer and click "end timer" when you complete a task [This is a simple time statistics assistant] - "Work", "Study", "Sleep"... You can label the time you record - Pie charts and timelines can intuitively see the time usage of a day (Eating, sleeping, playing games, which one takes more time?) [Normal mode and focus mode] - In "focus mode", if you exit the App, the timer will be interrupted. I hope this small auxiliary function can help everyone concentrate more~ This is really just a small tool, but I still hope that this App can play a little role in improving everyone's self-discipline. Finally, if you have any questions, praise or complaints, you can send us an email~ We will reply as soon as we see it Email: xwz@zhyuxwz.com

About

PaperCode

Organize your books and papers by assigning them to custom places and associating them with barcodes or QR codes. Quickly update an item's location by scanning its code. Automatically gather book information from databases by scanning ISBN barcodes.

Highlights
  • Manage items and places
  • Scan barcodes/QR codes
  • OCR for printed text
  • Automatic book information retrieval
  • Customizable place names
  • Quick item location updates
Features
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What you can do with this app: [The app remembers where your books/papers are.] *Manage ITEMS with PLACES where they belong to. -You can manage ITEMS and PLACES related to Barcodes/QR-codes by scanning codes or printed texts(OCR) using your phone's camera. -Only you need is minimum effort to add, update and search PLACES and ITEMS. -You can add and name any PLACES, such as "Bookshelf:A", "Box:B" and "Bed room closet". It is not necessary that PLACES are real physical places. They can be "Borrowed by John Doe", "Papers to copy", "Things to survey" and so on. -Though this app is designed for management of academic books and treatises(papers), you can also add and name any ITEMS. They can be "Golf shoes", "Water bottles for emergency", "Tax payment documents of 2019", "Buy salt", "Reserve restaurant" and so on. [Easier is better.] *Add, move, search, sometimes manage. With this app, you will: -Add(register) PLACES. Add(register) ITEMS and relate them to barcodes/QR-codes. -When you move an ITEM, scan a barcode/QR-code to update its PLACE to belong to. -Search an ITEM's name to find out its PLACE. -You can rename ITEMS and PLACES, update relationship between them and new codes, update their order in the lists at any time. [No automation, no life.] *ITEMS and PLACES cooperate with barcodes/QR-codes. -You can relate ITEMS and PLACES to any barcodes/QR-codes. -Once you created relationships between ITEMS/PLACES and codes, when you move an ITEM from current PLACE to another PLACE, all you have to do is: 1.Scan the code of the new PLACE using the camera, 2.Scan the code of the ITEM. That's it. It won't take more than 3 seconds. -The code will be scanned automatically when your camera focuses it. You don't even need to press the shutter button. -If the books or papers don't have barcodes/QR-codes, add codes to them. (for example, codes printed directly on the papers using handy printers or codes printed on sticker labels.) Any unique digits or characters will work. *Automatically collect information. -Information of books and papers (author, title, publisher, published date) will be collected automatically by searching with keyword(s). -This app accesses CiNii/CiNiiBooks database OpenSearch service on the web to get the information. -If you scan a barcode and the code is an ISBN, this app will collect and fill all necessary information automatically. All you need is to tap "OK" button. -You can search and find books or papers by using keyword(s). Use space for AND search and use slash for OR search. If multiple results hit, you can choose one to add as a new ITEM. -A particular chapter of a book can be added in the same way as a paper. *Relate ITEMS and PLACES to barcodes/QR-codes -Both ITEMS and PLACES can be related to barcode/QR-code. -You can delete or update(relate again) relationships between codes and ITEMS/PLACES. *Script(handwriting) recognition -If you can't use barcodes/QR-codes in some reason, you can try script(handwriting) recognition. It works, but it takes a lot of time and it won't recognize 100% correctly. So I strongly recommend you to use barcodes/QR-codes. [Nothing is more important than safety.] *Backup and export your data. -You can backup your data(ITEMS/PLACES) to a text file (as SQL expressions). -You can export backup file(s) to external storages/apps/services, such as iPhone's documents folder(which syncs with iCloud), Dropbox app, GoogleDrive app and so on. [Search and find at once.] *See all items in the place or search with keyword(s) -You can see all the ITEMS belonging to particular PLACE. -You can search an ITEM by keyword(s). AND/OR search is available. -You can search a PLACE as well. (but only AND search is available.)

Screenshots

Chrono Assistant4 screens
PaperCode4 screens

Verdict

The call

The clearest difference is price: PaperCode at Free against Chrono Assistant's $0.99. Chrono Assistant's advantage is iOS requirement (12.0 vs 16.0). On update cadence, ads, 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

CostPrice · In-app purchases · Ads · Monetization

PaperCode is free to download; Chrono Assistant costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 5, 2026 and September 21, 2026 respectively.

Scorecard2 real differences · 7 level
Chrono Assistant versus PaperCode: the parameters behind the verdict, then further details
ParameterChrono AssistantPaperCode
Price$0.99Free — better
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size35 MB25 MB
Age rating4+4+
Developeryu tingYuichiro Momosaki

In-app purchases

None

Chrono Assistant

No in-app purchases

None

PaperCode

No in-app purchases

Questions

Is Chrono Assistant free?
Chrono Assistant costs $0.99, with no in-app purchases.
Is PaperCode free?
PaperCode is free to download, with no in-app purchases.
Do Chrono Assistant or PaperCode have ads?
Neither Chrono Assistant nor PaperCode shows ads.
Which is updated more often, Chrono Assistant or PaperCode?
Chrono Assistant ships an update every 3 weeks, and PaperCode every 3 weeks. Most recently, Chrono Assistant was updated on October 5, 2026 and PaperCode on September 21, 2026.

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