ISO Fits vs CADDaddy
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
CADDaddy
Read full descriptionHide full description
CADDaddy is a fast, native 3D CAD viewer for iPhone and iPad. Open STEP, DWG, DXF, FBX, 3MF, PLY, STL, IGES and OBJ files in seconds — no account required, no subscription, no features locked behind a second paywall. Built natively for Apple Silicon, CADDaddy renders complex assemblies smoothly using Metal. Every part keeps its colour. Every gesture works the way you'd expect on iPhone and iPad. WHAT YOU CAN DO - Open files from Files, Mail, AirDrop, or any share sheet - View assemblies in full colour where each part renders individually - Switch between shaded, wireframe, and solid display modes - Toggle between perspective and orthographic projection - Slice through any model with section planes on X, Y and Z axes - Measure point-to-point distances with vertex snapping - Export to STL, GLB or USDZ - View any USDZ export in AR — place a model on your desk and walk around it WORKS THE WAY AN iOS APP SHOULD Native touch gestures. One-finger orbit, two-finger pan, pinch to zoom. Every control is built for thumbs and fingers, not retrofitted from a desktop UI. VIEW IN AR Tap to send any model to AR Quick Look. See your part at full scale on the floor, on your desk, in your workshop wherever you need to check it before you commit. ONE PURCHASE. THREE PLATFORMS. Buy once and CADDaddy unlocks on iPhone, iPad and Mac. No account, no cloud sync, no analytics — your files stay on your device. WHO IT'S FOR Engineers checking geometry on the go. Clients reviewing a design without needing a CAD licence. 3D printing enthusiasts inspecting files before they slice. Machinists verifying a part before they cut. If you've ever tried to open a CAD file on your iPhone and hit a login screen, a subscription prompt, or a crash, CADDaddy is the app you were looking for.
Screenshots
Verdict
The clearest difference is price: ISO Fits at Free against CADDaddy's $12.99. ISO Fits also leads on rating (4.2 vs 1.0) and ratings volume (6 vs 1). CADDaddy's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement 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
ISO Fits is free to download; CADDaddy costs $12.99 up front. ISO Fits sells 1 one-off in-app purchase. CADDaddy asks for nothing beyond the download.
ISO Fits holds the better App Store score, 4.2 against 1.0. That said, the two scores are not equally well evidenced: ISO Fits has 6 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | ISO Fits | CADDaddy |
|---|---|---|
| Price | Free — better | $12.99 |
| Rating | 4.2 (6 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 94.6% of reviews | — |
| Number of ratings | 6 — better | 1 |
| Update frequency | Every 5 months | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 66 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Trelleborg Sealing Solutions | Alan Agon |
In-app purchases
ISO Fits
- Full Version with complete ISO286 Standard$1.99
CADDaddy
No in-app purchases
Questions
Is ISO Fits free?
Is CADDaddy free?
Which has better reviews, ISO Fits or CADDaddy?
Do ISO Fits or CADDaddy have ads?
Other comparisons















