Comparison

ISO Fits vs Walter Insert Converter

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • ISO fits calculation
  • Tolerance class display
  • Metric/inch unit switching
  • Tolerance charts
  • Updated YouTube videos
Features
Read 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

About

Walter Insert Converter

Easily find equivalent Walter inserts for your current machining tools. Optimize chip cutting, extend tool life, and enhance process safety and productivity.

Highlights
  • Find equivalent Walter inserts
  • Optimize chip cutting
  • Increase tool life
  • Enhance process safety
  • Supports ISO-Turning, parting-off, grooving
  • Covers advanced materials (CBN/PKD/Ceramics/Cermet)
Features
Read full description

You have got a cutting application and want to use Walter inserts for the machining? It's easy with the Walter Insert Converter. Simply type-in the insert you are currently working with - and the Insert Converter tells you, which Walter inserts is equal to your current solution. The ideal app to optimize your chip cutting process and tool life, to increase the process safety and your productivity. This app covers grades in the product area ISO-Turning, parting-off and grooving as well as ISO Advanced Materials (CBN/PKD/Ceramics/Cermet). The chip former covers the areas ISO-Turning as well as parting-off and grooving.

Screenshots

ISO Fits4 screens
Walter Insert Converter3 screens

Verdict

The call

The clearest difference is review sentiment: ISO Fits at 95% against Walter Insert Converter's 0%. ISO Fits also leads on update cadence (every 5 months vs every 23 months). Walter Insert Converter's advantage is in-app purchases (none vs 1). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ISO Fits sells 1 one-off in-app purchase. Walter Insert Converter asks for nothing beyond the download.

UpkeepUpdate frequency

ISO Fits ships an update every 5 months, Walter Insert Converter every 23 months. The most recent releases landed on October 22, 2026 and October 7, 2026 respectively.

Scorecard4 real differences · 6 level
ISO Fits versus Walter Insert Converter: the parameters behind the verdict, then further details
ParameterISO FitsWalter Insert Converter
PriceFreeFree
Rating4.2 (6 ratings) — better—
Positive reviews94.6% of reviews — better0.0% of reviews
Number of ratings6 — better—
Update frequencyEvery 5 months — betterEvery 23 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.614.0 — better
Further details — not scored
Size66 MB33 MB
Age rating4+4+
DeveloperTrelleborg Sealing SolutionsWalter-AG

Customer experience

ISO Fits

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews37 reviews
Positive94.6%
Neutral0.0%
Negative5.4%

Walter Insert Converter

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

ISO Fits

One-time1
  • Full Version with complete ISO286 Standard$1.99
None

Walter Insert Converter

No in-app purchases

Questions

Is ISO Fits free?
ISO Fits is free to download, with in-app purchases available.
Is Walter Insert Converter free?
Walter Insert Converter is free to download, with no in-app purchases.
Do ISO Fits or Walter Insert Converter have ads?
Neither ISO Fits nor Walter Insert Converter shows ads.
Which is updated more often, ISO Fits or Walter Insert Converter?
ISO Fits ships an update every 5 months, and Walter Insert Converter every 23 months. Most recently, ISO Fits was updated on October 22, 2026 and Walter Insert Converter on October 7, 2026.

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