Hardness Unit Converter vs Force Converter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hardness Unit Converter
Easily convert hardness values between 12 different units, including Vickers, Brinell, Rockwell, and Shore. Input your value and select the desired unit for instant conversion, referencing ASTM E 140 standards and polynomial approximations for accuracy.
- Converts 12 hardness units
- Vickers, Brinell, Rockwell, Shore support
- Tensile strength conversion
- ASTM E 140 reference
- Polynomial approximation for data
- Simple input and unit selection
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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 ().
Force Converter
Easily convert force measurements between various units including Newton, kilonewton, ton-force, kilogram-force, and pound-force. Ideal for physicists, builders, and engineers needing quick and accurate conversions.
- Convert Newton (N)
- Convert kilonewton (kN)
- Convert ton-force (tf)
- Convert kilogram-force (kgf)
- Convert pound-force (lbf)
- Fast and accurate conversions
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Force Converter is the fast force converter to convert for Newton (N), kilonewton (kN), ton-force (tf), kilogram-force (kgf), pound-force (lbf). You can use it if you physicist, builder, engineer or another cool man. Convert forces quickly and as you want.
Screenshots
Verdict
The clearest difference is rating: Force Converter at 5.0 against Hardness Unit Converter's 4.0. Force Converter also leads on iOS requirement (13.4 vs 15.6). Hardness Unit Converter's advantage is update cadence (every 5 months vs every 38 months) and ratings volume (7 vs 1). On price, ads, in-app purchases and monetization model 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
Hardness Unit Converter costs $1.99 and Force Converter $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Force Converter holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Hardness Unit Converter has 7 ratings behind it against 1, so its average is the more settled of the two.
Hardness Unit Converter ships an update every 5 months, Force Converter every 38 months. The most recent releases landed on October 26, 2026 and October 8, 2026 respectively.
| Parameter | Hardness Unit Converter | Force Converter |
|---|---|---|
| Price | $1.99 | $1.99 |
| Rating | 4.0 (7 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 16.7% of reviews | — |
| Number of ratings | 7 — better | 1 |
| Update frequency | Every 5 months — better | Every 38 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.4 — better |
| Further details — not scored | ||
| Size | 1 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | Kei Suefuji | Anna Filobok |
Customer experience
Hardness Unit Converter
Force Converter
In-app purchases
Hardness Unit Converter
No in-app purchases
Force Converter
No in-app purchases
Questions
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Is Force Converter free?
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