TDK vs Idemitsu Smart OC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TDK
Access TDK-Lambda's complete product catalog offline. Browse by category, industry, or search for specific part numbers. This guide puts essential product information at your fingertips.
- Offline product catalog access
- Browse by category
- Browse by industry
- Search by part number
- Comprehensive product list
Read full descriptionHide full description
TDK-Lambda’s product guide, accessible without Wi-Fi, provides TDK-lambda’s catalog at the tip of your hands. Browse through the comprehensive product list by category, industry, or simply search for a specific part number.
Idemitsu Smart OC
This app enables on-site lubricant analysis using a smartphone camera. It assesses lubricant degradation and contamination by analyzing photos, providing numerical data to help detect anomalies and ensure stable machinery operation.
- On-site lubricant diagnosis
- Photo-based analysis
- Degradation status assessment
- Contamination level calculation
- Historical data access
- Early anomaly detection
Read full descriptionHide full description
Idemitsu Smart OC is an app that allows for easy on-site diagnosis of lubricant degradation and contamination. Traditionally, in lubrication environments, evaluation could only be performed qualitatively through visual observation, and quantitative assessments required sending samples to testing facilities equipped with analytical instruments. However, with Idemitsu Smart OC, you can simply take a photo of the lubricant using a smartphone, enabling you to assess its degradation and contamination status based on numerical data. Lubricants are often referred to as the "blood" of machines, making it crucial to understand their condition in order to gauge the overall state of the machinery. By utilizing Idemitsu Smart OC, you can detect lubrication anomalies early, contributing to the stable operation of machines. What Idemitsu Smart OC can do: 1) Perform analysis based on lubricant analysis data, determining the remaining lifespan percentage from the color of the lubricant (degradation status). 2) Calculate the amount and size of contaminants (contamination status). 3) Access historical data on a connected website for further review. To use this app, you need a dedicated module to keep the shooting environment constant and an internet communication environment.
Screenshots
Verdict
The clearest difference is update cadence: Idemitsu Smart OC at every 3 weeks against TDK's every 2 months. TDK's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.6). On price, ads, in-app purchases and monetization model 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.
TDK ships an update every 2 months, Idemitsu Smart OC every 3 weeks. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.
| Parameter | TDK | Idemitsu Smart OC |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 14 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | TDK-Lambda Americas Inc. | Idemitsu Kosan Co.,Ltd. |
Customer experience
TDK
Idemitsu Smart OC
In-app purchases
TDK
No in-app purchases
Idemitsu Smart OC
No in-app purchases









