Walter Machining Calculator vs O
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Walter Machining Calculator
Calculate machining time, power, torque, and cutting force for various operations. Compare existing tools with new ones to project potential savings.
- Calculate machining time, power, and torque
- Determine cutting force and metal removal rate
- Support for milling, drilling, boring, turning, and grooving
- Thread tapping, forming, and milling calculations
- Material selection for calculations
- Savings calculator for tool comparison
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Walter Machining Calculator Helps the user to calculate machining time, power, torque, cutting force, metal removal rate and chip thickness in a variety of machining operations, like Shoulder-, Face- and Slot-Milling, Drilling, Boring, Turning and Grooving, Thread Tapping, -Forming and -Milling, by selecting the material to machine and entering different machining parameters. With the Savings Calculator the user can also compare existing tool with a new tool and calculate projected savings.
O
This app helps users calculate O-Ring dimensions and find compatible materials for their applications. It provides recommendations based on ISO standards and supports both metric and inch measurements.
- O-Ring housing calculation
- O-Ring size recommendations by ISO standard
- Quick search by national/international standards
- O-Ring tolerance calculation
- Metric and inch unit switching
- Chemical compatibility check
- Integration of Trelleborg Sealing Solutions Videos
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The Trelleborg Sealing Solutions O-Ring App calculates O-Ring dimensions by simply entering installation specifications for your application in metric or inch. In addition, the App recommends O-Ring sizes according to ISO 3601 so you know exactly which part you need. Features at a Glance: - O-Ring Housing: After entering the bore or rod/shaft diameter, you will receive an O-Ring recommendation and O-Ring housing calculation according to the recommendations of ISO 3601 - O-Ring Quick Search: offers the selection of O-Ring nominal sizes according to the following national/international standards: ISO 3601-1 Class B (International), ISO 3601-1 Class A (AS 568, USA), NFT 47-502 (France), JIS B 2401 (Japan) SMS 1586 (Sweden) - Tolerances: calculation of O-Ring tolerances according to ISO 3601-1 Class B and Class A - Switch between metric and inch - Chemical compatibility check: find out which materials are compatible with the media used in your application. - Integration of Trelleborg Sealing Solutions Videos
Screenshots
Verdict
The clearest difference is rating: O at 3.8 against Walter Machining Calculator's 3.0. O also leads on update cadence (every 3 months vs every 19 months) and review sentiment (83% vs 63%). On price, ratings volume, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
O holds the better App Store score, 3.8 against 3.0. Both are backed by a comparable volume of ratings — 5 and 5 respectively. Written reviews point the same way: 63% of Walter Machining Calculator's written reviews are positive against 83% of O's.
Walter Machining Calculator ships an update every 19 months, O every 3 months. Both last shipped on October 23, 2026.
| Parameter | Walter Machining Calculator | O |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (5 ratings) | 3.8 (5 ratings) — better |
| Positive reviews | 62.9% of reviews | 83.3% of reviews — better |
| Number of ratings | 5 | 5 |
| Update frequency | Every 19 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 12.1 — better |
| Further details — not scored | ||
| Size | 95 MB | 26 MB |
| Age rating | 4+ | 12+ |
| Developer | Walter-AG | Trelleborg Sealing Solutions |
Customer experience
Walter Machining Calculator
O
In-app purchases
Walter Machining Calculator
No in-app purchases
O
No in-app purchases
Questions
Is Walter Machining Calculator free?
Is O free?
Which has better reviews, Walter Machining Calculator or O?
Do Walter Machining Calculator or O have ads?
Which is updated more often, Walter Machining Calculator or O?
Other comparisons
