O vs CRCE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
CRCE
This tool enables engineers to conduct daily site routines, quality checks, and planned preventative maintenance for coating equipment. It allows for the generation and sharing of detailed site reports with the team.
- Daily site routine management
- Quality check execution
- PPM for coating equipment
- DSR report generation
- QC report generation
- PPM report generation
- Report sharing
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CRCE-Connect app is a project reporting tool that allows CRC Evans engineers to perform Daily site routines, Quality checks, and PPMs for coating equipment. Engineers can generate and share DSR, QC, and PPM reports with the team.
Screenshots
Verdict
The clearest difference is update cadence: CRCE at fortnightly against O's every 6 weeks. O's advantage is iOS requirement (12.0 vs 15.5). 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.
O ships an update every 6 weeks, CRCE fortnightly. The most recent releases landed on October 12, 2026 and October 16, 2026 respectively.
| Parameter | O | CRCE |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.5 |
| Further details — not scored | ||
| Size | 40 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | HUTCHINSON | CRC-Evans Pipeline International, Inc |
In-app purchases
O
No in-app purchases
CRCE
No in-app purchases









