Bolt Length vs Simpliinspect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bolt Length
This application helps calculate the length of metric coarse screws based on Japanese Industrial Standards. It is designed for mechanical design purposes and should be used at the user's own risk.
- Metric coarse screw length calculation
- Conforms to Japanese Industrial Standards (JIS)
- Designed for mechanical design
- User risk disclaimer
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This app is an application for calculating the length of the screw. ※:This app does not guarantee the effectiveness of the combination. ※:Use this application at your own risk. Conforms to the Japanese Industrial Standards (JIS). Screws are all metric coarse screw. For mechanical design. Sorry, Only in Japan.Because using the JIS.
Simpliinspect
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Simpliinspect is an inspection audit platform for O&M and safety and compliance. Simpliinspect helps to improve Productivity and Operation and Safety. The Mobile App based inspection supports users to get more data with proof of photo. Inspection intelligent platform helps to digitize your process which improves efficiency.
Screenshots
Verdict
The clearest difference is in-app purchases: Simpliinspect at none against Bolt Length's 1. Simpliinspect also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 20 months). On price 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. Bolt Length sells 1 one-off in-app purchase. Simpliinspect asks for nothing beyond the download.
Bolt Length ships an update every 20 months, Simpliinspect every 3 weeks. The most recent releases landed on October 8, 2026 and October 14, 2026 respectively.
| Parameter | Bolt Length | Simpliinspect |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 20 months | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | mitsunori oishi | SIMPLIBIZZ TECHNOLOGIES PRIVATE LIMITED |
In-app purchases
Bolt Length
- Hide Ads$1.99
Simpliinspect
No in-app purchases
