mechanical design engine vs Digital_Diary
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
mechanical design engine
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* To calculate basic thickness of cylindrical/rectangular pressure vessel including heads if input data such as pressure, temperature, inner diameter and material information. * flange data can be easily searched. * Profile steel information such as pipe, H, W, I and U-Beam. * Raw material information, that is chemical composition and mechanical properties, for example, ASTM A240 316L, EN10297-1, SUS316L and so on. * Size and shape information of every thread(iso/unf/pf/pt) and shackles(bow/d-type) * To calculate force and moment of solid mechanics according to support type.
Digital_Diary
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Background National Board RCI-1 / NB-263 requires that each Repair Inspector and Authorized Inspector performing Codes duties shall maintain an Inspector Diary and monitor the Certificate Holder's quality program on a continual basis. The purpose of the diary is to provide a record of the Inspector's activity and to support continuity of inspections. The inspector diary shall be available at the location of inspection and must be maintained for a minimum of 5 years. ย Most of the AIA are maintaining hardbound diaries at site, however handling and retrieving those bound dairies are bit challenge and with Covid-19 outbreak it become trickier to physically handling hard bound diaries. ย Both ASME and NB allows electronic diaries however the requirement it must be under the complete administrative control of the AIA and secured in such a way as to prevent revisions, additions, or deletions to entries which have been previously logged in the diary. ย Utility This application addresses all those requirements, user inputs are transferred to a PDF form which is locked and cannot be altered later. These PDF inspection report can be sent via email to administrator and can be stored in company own cloud storage and can be accessed remotely from anywhere. Not only report can store indefinitely but also available for auditing purpose making life easy for all. ย Data entry can be made by writing in the application or by speech to text (transcription) making it easy for those who are not good with typing or slow to write, hence making it quick data entry possible for people of all ages. ย ย Competitive Edge There is no such app available in the market to facilitate and meet all the requirement of the regulator and ease of use. ย Target Audience This app targets inspection agencies, pressure items manufacturing organizations, quality control personnel and other organization that requires to maintain their records. ย Customization This app can be customized to your format and data requirement and can only be available within your company. If you want to customize this app to fits your need or any other application development, contact us at paramountengineeringincorp@gmail.com Hardware Access User to provide access to Camera for picture taken from Camera or library and attached to inspection report, microphone for transcription and internet access to send the report via email. No data is collected by anyone. User can safe their data on their own server / cloud Subscription Requirement: This is paid application, you can download the app from App Store for free however monthly or annual subscription is need before you can use any of the function of this app. Purchase can be made by going to the menu of the application. Terms and condition are also provided there. Terms of Use: This app follow Apple Standard Term of Use (EULA) more information about apple standard Licensed Application End User License Agreement can be found at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: mechanical design engine at none against Digital_Diary's 2. Digital_Diary's advantage is update cadence (every 2 days vs every 2 months) and device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Digital_Diary sells 2 in-app purchases, starting at $19.99 per month. mechanical design engine asks for nothing beyond the download.
mechanical design engine ships an update every 2 months, Digital_Diary every 2 days. The most recent releases landed on September 25, 2026 and September 23, 2026 respectively.
| Parameter | mechanical design engine | Digital_Diary |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 days โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Mac โ better |
| Requires iOS | 13.0 | 13.0 |
| Further details โ not scored | ||
| Size | 63 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | gan dae choi | Shabbir Ahmed |
In-app purchases
mechanical design engine
No in-app purchases
Digital_Diary
- Monthly Auto-Renewing Subs$19.991 Month
- Annual Auto-Renewing Subs$24.991 Year
Questions
Is mechanical design engine free?
Is Digital_Diary free?
Do mechanical design engine or Digital_Diary have ads?
Which is updated more often, mechanical design engine or Digital_Diary?
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