Walter Feeds & Speeds vs O
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Walter Feeds & Speeds
This app helps determine optimal feed rate and cutting speed values for various machining operations. It covers turning, drilling, threading, and milling with indexable inserts. Navigate through machining operations, materials, and tool types to find precise values.
- Determine feed rate and cutting speed
- Supports turning, drilling, threading, milling
- Indexable insert tool compatibility
- Intuitive navigation
- Workpiece material selection
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Walter Feeds & Speeds is an intuitive app for determining base feed rate and cutting speed values. The app covers variety of machining operations in the field of Turning-, Drilling-, Threading- and Milling tools with indexable inserts. The intuitive navigation, from machining operation, work piece material, tool type and further parameters, will help you to determining the feed rate and cutting speed values.
O
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Who hasn't sometimes wished for assistance when it comes to define the mounting dimensions for O-Rings or even find the right O-Ring? The Hutchinson O-Ring app offers precious tools: • Assembly aid, depending on the installation type (in a bore, on a piston, cover fitting with internal or external pressure) • Compounds compatibility with various fluids • Intelligent O-Ring measuring tool with the smartphone's camera function • Dimensions list for standard parts You can choose a reference number from thousands of available O-Rings and then precisely define the groove dimensions to ensure perfect sealing. On the contrary, after choosing the installation type and the groove dimensions, the app will recommend a list of compatible O-Ring dimensions. A smart measuring tool has been developed to measure your O-Rings dimensions. This can for instance be used in MRO for easy replacement. Take a coin to set the standard and watch your smartphone turn into a digital measure tool for precision seals! If chemistry classes are bad memories for you, the compound compatibility tool will help you to define the appropriate compound family, depending on the fluid used in your application. Bonus : get the PDF calculation results per email ! In order to confirm your choice, we recommend to validate with tests
Screenshots
Verdict
The clearest difference is update cadence: O at every 6 weeks against Walter Feeds & Speeds's every 6 months. O also leads on iOS requirement (12.0 vs 14.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Walter Feeds & Speeds ships an update every 6 months, O every 6 weeks. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.
| Parameter | Walter Feeds & Speeds | O |
|---|---|---|
| Price | Free | Free |
| Rating | 2.2 (9 ratings) — better | — |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 6 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 159 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Walter-AG | HUTCHINSON |
In-app purchases
Walter Feeds & Speeds
No in-app purchases
O
No in-app purchases
Questions
Is Walter Feeds & Speeds free?
Is O free?
Do Walter Feeds & Speeds or O have ads?
Which is updated more often, Walter Feeds & Speeds or O?
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