picocalc vs JHP byNSDev
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
picocalc
This app displays a single number on your home screen badge, which can be set, added to, or subtracted from. It's a minimalist tool for quick numerical reminders. Negative numbers and zero are not displayed on the badge.
- Set a number
- Add to number
- Subtract from number
- Home screen badge display
- Hides zero and negative numbers
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picocalc is a tiny number memo which can be set, added and subtracted. The number is show as an application badge in the home screen. Zero and a negative number won't be shown in the badge.
JHP byNSDev
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Software that displays the population of the municipality of Japan (man, woman), the number of households. Currently it is data from 1995 onwards, but we will add it sequentially. *How to use From the year you want to display, all data, number of households, total sex and total, total. *Function The population (male, female, total), you can sort by the number of households. When you select all the municipalities, you can choose to show or hide prefecture names as options. *Data source Portal Site of Official Statistics of Japan website (http://www.e-stat.go.jp/).
Screenshots
Verdict
The clearest difference is in-app purchases: JHP byNSDev at none against picocalc's 1. JHP byNSDev also leads on ads (none vs shown) and update cadence (every 7 months vs every 31 months). On price 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. picocalc sells 1 one-off in-app purchase. JHP byNSDev asks for nothing beyond the download.
picocalc ships an update every 31 months, JHP byNSDev every 7 months. The most recent releases landed on September 22, 2026 and September 16, 2026 respectively.
| Parameter | picocalc | JHP byNSDev |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 65.6% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 31 months | Every 7 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad, Apple Watch, Vision Pro — better | iPhone, iPad, iPod |
| Requires iOS | 17.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 6 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Masayuki Akamatsu | NIHON SYSTEM DEVELOPER CORPORATION |
In-app purchases
picocalc
- Remove Ads$0.99
JHP byNSDev
No in-app purchases
