Hardness Unit Converter Downloads & RevenueHardness Unit Converter · App Store
Hardness Unit Converter is #33 in Utilities Paid in France and charting in 1 of 30 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperKei Suefuji
CategoryUtilities
Price1.99 EUR
Released
Rating★ 0.0 (0)
Version2.6.0
Age rating4+
First seen by us
1 Oct 2026
1 Oct 2026Installs (est.)5k+ worldwide
Hardness Unit Converter update history & changes
Last change · 4 events since 28 Jul 2018Full timeline ↓📈Dropped out of every chart we track🆕First spotted by AppInsider📦Version 2.6.0🆕Released on the App Store
Full timeline · 4 events
- 📈Hardness Unit Converter dropped out of every chart we trackLast seen 30 Oct
- 🆕Hardness Unit Converter first spotted by AppInsider#137 in Top Paid · All Apps · Japan
- 📦Hardness Unit Converter version 2.6.0Modified the internal processing for screen display.
- 🆕Hardness Unit Converter released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
0.0 ★
0 ratings
Measured
Best rank now
#33
Utilities PaidMeasured
Hardness Unit Converter on the App Store
App details
App ID
1409248484
Publisher
Kei Suefuji
On the store since
Jul 2018
8 years on the store
Minimum OS
iOS 15.6+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
14
NL EN FR DE IT JA KO PT RU ZH ES TH …
Size
1 MB
Also listed in
Productivity
Hardness Unit Converter downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| France | UtilitiesPaid | #33 |
Apps near Hardness Unit Converter on the chart
Utilities Paid, around #33.
Ratings
App Store, worldwide.
Rating
0.0 ★
0 ratings
Measured
Ratings
0
Measured
About Hardness Unit Converter
The Hardness Unit Converter application converts the hardness into 12 types of units.
The units to be converted by this application are Vickers hardness HV, Brinell hardness HBS, HBW, Rockwell hardness HRA, HRB, HRC, HRD, Rockwell superficial hardness HR 15 N, HR 30 N, HR 45 N, Shore hardness HS, and tensile strength MPa.
Simply input the hardness value and select the unit of hardness with the unit selection button, it will be converted into 12 types of units.
This application refers to the approximate conversion table of ASTM E 140 Table 1 and JIS, and data not in the table is calculated by polynomial approximation.
Values in the range not normally used are indicated by ().
The units to be converted by this application are Vickers hardness HV, Brinell hardness HBS, HBW, Rockwell hardness HRA, HRB, HRC, HRD, Rockwell superficial hardness HR 15 N, HR 30 N, HR 45 N, Shore hardness HS, and tensile strength MPa.
Simply input the hardness value and select the unit of hardness with the unit selection button, it will be converted into 12 types of units.
This application refers to the approximate conversion table of ASTM E 140 Table 1 and JIS, and data not in the table is calculated by polynomial approximation.
Values in the range not normally used are indicated by ().
Latest updates
2.6.0
Modified the internal processing for screen display.
