ISO Fits vs steelyard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ISO Fits
Calculate ISO fits and tolerances for shafts and bores. Supports metric and inch units, displays detailed fit definitions, and includes visual charts and educational videos.
- ISO fits calculation
- Tolerance class display
- Metric/inch unit switching
- Tolerance charts
- Updated YouTube videos
Read full descriptionHide full description
It includes the following features: - Fits calculation: Upon entering the nominal diameter (of either bore or shaft), users select their tolerance classes for bore and shaft. The app then provides the complete ISO fits definition with all relevant values. - Tolerances: Shows the tolerances for the most commonly used ISO tolerance classes. - switch between metric and inch version. - Charts: Shows the most common ISO tolerances classes in a diagram. - Videos: Features the automatically updated latest TSS youtube videos. The results of this application are based on DIN ISO 286 Nominal dimension: 1-3150mm following tolerances included: Shaft: a9, a10, a11, a12, a13, b8, b9, b10, b11, b12, b13, c8, c9, c10, c11, c12, cd5, cd6, cd7, cd8, cd9, cd10, d5, d6, d7, d8, d9, d10, d11, d12, d13, e5, e6, e7, e8, e9, e10, ef3, ef4, ef5, ef6, ef7, ef8, ef9, ef10, f3, f4, f5, f6, f7, f8, f9, f10, fg3, fg4, fg5, fg6, fg7, fg8, fg9, fg10, g3, g4, g5, g6, g7, g8, g9, g10, h1, h2, h3, h4, h5, h6, h7, h8, h9, h10, h11, h12, h13, h14, h15, h16, h17, h18, js1, js2, js3, js4, js5, js6, js7, js8, js9, js10, js11, js12, js13, js14, js15, js16, js17, js18, j5, j6, j7, j8, k3, k4, k5, k6, k7, k8, k9, k10, k11, k12, k13, m3, m4, m5, m6, m7, m8, m9, n3, n4, n5, n6, n7, n8, n9, p3, p4, p5, p6, p7, p8, p9, p10, r3, r4, r5, r6, r7, r8, r9, r10, s3, s4, s5, s6, s7, s8, s9, s10, t5, t6, t7, t8, u5, u6, u7, u8, u9, v5, v6, v7, v8, x5, x6, x7, x8, x9, x10, y6, y7, y8, y9, y10, z6, z7, z8, z9, z10, z11, za6, za7, za8, za9, za10, za11, zb7, zb8, zb9, zb10, zb11, zc7, zc8, zc9, zc10, zc11 Bore: A9, A10, A11, A12, A13, B8, B9, B10, B11, B12, B13, C8, C9, C10, C11, C12, C13, CD6, CD7, CD8, CD9, CD10, D6, D7, D8, D9, D10, D11, D12, D13, E5, E6, E7, E8, E9, E10, EF3, EF4, EF5, EF6, EF7, EF8, EF9, EF10, F3, F4, F5, F6, F7, F8, F9, F10, FG3, FG4, FG5, FG6, FG7, FG8, FG9, FG10, G3, G4, G5, G6, G7, G8, G9, G10, H1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11, H12, H13, H14, H15, H16, H17, H18, JS1, JS2, JS3, JS4, JS5, JS6, JS7, JS8, JS9, JS10, JS11, JS12, JS13, JS14, JS15, JS16, JS17, JS18, J6, J7, J8, J9, K3, K4, K5, K6, K7, K8, K9, K10, M3, M4, M5, M6, M7, M8, M9, M10, N3, N4, N5, N6, N7, N8, N9, N10, N11, P3, P4, P5, P6, P7, P8, P9, P10, R3, R4, R5, R6, R7, R8, R9, R10, S3, S4, S5, S6, S7, S8, S9, S10, T5, T6, T7, T8, U5, U6, U7, U8, U9, U10, V5, V6, V7, V8, X5, X6, X7, X8, X9, X10, Y6, Y7, Y8, Y9, Y10, Z6, Z7, Z8, Z9, Z10, Z11, ZA6, ZA7, ZA8, ZA9, ZA10, ZA11, ZB7, ZB8, ZB9, ZB10, ZB11, ZC7, ZC8, ZC9, ZC10, ZC11
steelyard
This app quickly calculates the weight of steel sections from various international standards. It supports both metric and imperial units and offers offline functionality for convenience. Save your settings and calculations for easy access.
- Steel section weight calculation
- Supports EU, USA, Japanese, KOREA standards
- Metric and Imperial units
- Offline functionality
- Save calculations and settings
- Advanced search system
Read full descriptionHide full description
Steelyard: The Ultimate Metal Mass & Cost Calculator Precision matters. Whether you’re a structural engineer, a metal fabricator, or a scrap dealer, Steelyard turns your smartphone into a heavy-duty industrial scale. Stop guessing and start calculating with the most intuitive interface on the market. iron, aluminum, copper, brass, density, structural, engineer, fabrication, rebar, tube, kg, lbs, construction, gauge, volume, materials, h-beam, u-beam From standard sheets to complex industrial sections, Steelyard handles: Structural Beams: I-Beam, H-Beam, U-Channel, and T-Bars. Tubes & Pipes: Round, square, and rectangular hollow sections. Rods & Bars: Hexagonal, round, and flat bars. Custom Profiles: Input your own dimensions for specialized sections. Massive Material Database: metals including Steel, Aluminum, Copper, Brass, Titanium, and Lead. Live Price Estimator: Input the price per unit to get instant total project costs. Dual Unit Support: Seamlessly toggle between Metric (kg, mm, m) and Imperial (lbs, in, ft). History Log: Save your previous calculations for quick reference later. Offline Mode: Works in the workshop or on-site without an internet connection. "Steelyard is built for the floor, not just the office. Big buttons, high-contrast text, and zero fluff."
Screenshots
Verdict
The clearest difference is review sentiment: ISO Fits at 95% against steelyard's 56%. steelyard's advantage is rating (4.7 vs 4.2) and ratings volume (297 vs 6). 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
Both are free to download. ISO Fits sells 1 one-off in-app purchase and steelyard sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
steelyard holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: steelyard has 297 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 95% of ISO Fits's written reviews are positive against 56% of steelyard's, so the app with the better star average is not the one people write more warmly about.
ISO Fits ships an update every 5 months, steelyard every 2 months. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.
| Parameter | ISO Fits | steelyard |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (6 ratings) | 4.7 (297 ratings) — better |
| Positive reviews | 94.6% of reviews — better | 55.6% of reviews |
| Number of ratings | 6 | 297 — better |
| Update frequency | Every 5 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 — better | 16.6 |
| Further details — not scored | ||
| Size | 66 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Trelleborg Sealing Solutions | Mohamed Saad |
Customer experience
ISO Fits
steelyard
In-app purchases
ISO Fits
- Full Version with complete ISO286 Standard$1.99
steelyard
- Ad Blocker$9.99
Questions
Is ISO Fits free?
Is steelyard free?
Which has better reviews, ISO Fits or steelyard?
Do ISO Fits or steelyard have ads?
Which is updated more often, ISO Fits or steelyard?
Other comparisons















