DateCalcMemo ～ how many days vs Z Scan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DateCalcMemo ～ how many days
Calculate the number of days between two dates or determine a future or past date based on a given number of days. Save important calculation results with associated notes.
- Calculate days between two dates
- Calculate future/past dates
- Save calculation results
- Add notes to saved calculations
- Delete app data when app is removed
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---------------------------------------- - Add a mode to calculate the number of days between two dates - Add a mode to calculate the date of the date the number of days before or after ※ note. The results is not saved in the above modes. ---------------------------------------- Usually, "I wonder how many years passed since then," Do not you think? · Since you have moved · Since you graduated from school · Since the beginning of something new · Etc ... This application calculate the one below. · How many days have passed from the specified date · In how many days until the specified date You can save results of the calculation along with some words. ※ Please note that it also delete the data if you remove the app.
Z Scan
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Z Scan is a fast and reliable OCR scanner that converts images and PDF files into editable text. Designed for productivity, study, and everyday document needs. Key Features: Image OCR: extract text from photos PDF OCR: convert PDFs to editable text Document & ID scanning with auto-crop Multi-language support Privacy-focused local processing Perfect for notes, contracts, receipts, and documents.
Screenshots
Verdict
The clearest difference is update cadence: Z Scan at weekly against DateCalcMemo ～ how many days's fortnightly. DateCalcMemo ～ how many days's advantage is iOS requirement (8.0 vs 16.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
DateCalcMemo ～ how many days ships an update fortnightly, Z Scan weekly. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.
| Parameter | DateCalcMemo ～ how many days | Z Scan |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Fortnightly | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 8.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 9 MB | 7 MB |
| Age rating | 4+ | 9+ |
| Developer | TOSHIYUKI SEKIZAKI | 小静 杨 |
In-app purchases
DateCalcMemo ～ how many days
No in-app purchases
Z Scan
No in-app purchases
Questions
Is DateCalcMemo ～ how many days free?
Is Z Scan free?
Do DateCalcMemo ～ how many days or Z Scan have ads?
Which is updated more often, DateCalcMemo ～ how many days or Z Scan?
Other comparisons
![Image to Text [OCR]](https://cdn3.appshunter.io/i/Purple211/920696ec39eb45ace42c37ff83669b9b/appicon-0-0-1x_U007emarketing-0-8-0-85-220.png/640x0w.webp "Image to Text [OCR]")
