ISO Fits vs SET & GO PRO
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
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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
SET & GO PRO
This app assists butt welders by calculating welding parameters through guided steps. It includes a functional timer for the work cycle and supports various welding standards and materials.
- Guided parameter calculation
- Welding machine selection
- Standard and material choice
- Functional timer with countdown
- PDF parameter table creation
- Multi-language support
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"SET & GO PRO" app developed by RITMO S.p.A. for its butt welders. "SET & GO PRO" calculates the butt welding parameters in a simple, fast and useful way. With easy guided steps, how to select the welding machine, set the characteristics of the pipe, choose the welding standard etc, "SET & GO PRO" immediately tells you how to weld! The entire work cycle is then "assisted and guided step by step" also by a functional timer with countdown timer. "SET & GO PRO" ... it's already the future! • Languages: English, Spanish, Italian, French, Polish, Romanian, Deutsch, Portuguese. • Tutorial page: with tutorial "How to use this app" and with instructional videos for the BASIC LINE and the EASY LIFE WELDING SYSTEM. • Choice of welding machine: from list of Ritmo butt fusion hydraulic machines or free insertion of the thrust section of the cylinders (cm2, in2). • Choice of welding standard: ISO 21307 SLP / DLP / SHP, UNI 10520 SINGLE / DUAL, DVS 2207-1, DVS 2207-11, ASTM F2620-20, ASTM F3372-20, WIS 4-32-08, NS 416-2, INSTA 2072-2, ES. 0207.GN-DG, NBN T 42-010 Methods A/B, NEN 7200 or free entry of interface pressure (MPa, bar, psi). • Choice of tube diameter from list or free insertion (mm, in, IPS, DIPS). • SDR choice or free insertion of the thickness (mm, in). • Material choice (PE, PE80, PE100, PE100RC, PEHD, PP, PA12). • Insertion of drag pressure (bar, psi). • Insertion of room temperature (° C, ° F) in the standards where required. • Presentation of welding parameters (° C / bar or ° F / psi). • Creation of welding parameter tables in pdf format • Calculation of welding parameters and timer function for each phase of the welding cycle with acoustic signal in the last 10 seconds of each phase. Choose "SET & GO PRO" because safety and quality are part of your job!
Screenshots
Verdict
The clearest difference is in-app purchases: SET & GO PRO at none against ISO Fits's 1. SET & GO PRO also leads on iOS requirement (12.0 vs 15.6). ISO Fits's advantage is review sentiment (95% vs 67%). On price, update cadence, ads 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. ISO Fits sells 1 one-off in-app purchase. SET & GO PRO asks for nothing beyond the download.
ISO Fits ships an update every 5 months, SET & GO PRO every 8 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.
| Parameter | ISO Fits | SET & GO PRO |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (6 ratings) — better | — |
| Positive reviews | 94.6% of reviews — better | 66.7% of reviews |
| Number of ratings | 6 — better | — |
| Update frequency | Every 5 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 66 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Trelleborg Sealing Solutions | Ritmo S.p.A. |
Customer experience
ISO Fits
SET & GO PRO
In-app purchases
ISO Fits
- Full Version with complete ISO286 Standard$1.99
SET & GO PRO
No in-app purchases









