G SHELL vs CorroScan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
G SHELL
Easily personalize your case by casting any image to it in seconds. Choose from photos, your album, or original designs for a quick style update. Enjoy a creative playground with regular new designs and updates.
- Cast any image to your case
- Use photos or album pictures
- Try original designs
- No batteries or cables needed
- Regular new designs and updates
Read full descriptionHide full description
G-SHELL | Personalize Your XTREM Case in a Tap Snap a photo, pick from your album, or try our original designs—cast any image to your case in seconds. No batteries. No cables. Just endless new looks. It’s your creative playground, with fresh drops and updates to keep things fun. Welcome to the fun side of tech. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://xtrem-inno.com/act_html/agreement.html
CorroScan
Read full descriptionHide full description
Point. Detect. Measure. CorroScan finds corrosion with on-device AI and measures its true area with LiDAR — geotagged, logged, and PDF-ready in seconds.CorroScan turns your iPhone into a corrosion inspection instrument. Point the camera at rusted steel: on-device AI outlines every corrosion patch live, and the LiDAR scanner measures its true surface area — no reference markers, no tape measures, no guesswork. DETECT — a corrosion-trained neural network segments patches in real time, with stable outlines that survive camera motion. Distance, angle and light guidance keep every capture reliable. MEASURE — LiDAR depth fused with the camera yields genuine surface area (cm²/m²) and span for each patch, with a stated tolerance. Multiple patches are measured individually and in total. LOCATE — every scan is geotagged with a site name, browsable on a map and in a searchable, filterable log. REPORT — generate clean A4 PDF defect reports with photo, outlines, measurements, GPS and capture conditions — ready to send from the field. FREE — 100 scans with full detection and measurement. Everything stays on your iPhone. CORROSCAN PRO (auto-renewable subscription, monthly or annual) — unlimited scans and PDF defect reports. 100% on-device: no account, no cloud, your data never leaves your iPhone. TEAMS — inspection companies equip their crews with organization seats, adding cloud sync and a web dashboard managed by the company. REQUIRES a LiDAR-equipped iPhone (iPhone 12 Pro or later Pro models). No ads, no tracking, no third-party analytics. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://corroscan.ai/privacy.html
Screenshots
Verdict
The clearest difference is update cadence: CorroScan at every 2 days against G SHELL's every 2 weeks. 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. G SHELL sells 5 in-app purchases, starting at $4.59 per month and CorroScan sells 2 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.
G SHELL ships an update every 2 weeks, CorroScan every 2 days. The most recent releases landed on October 1, 2026 and September 25, 2026 respectively.
| Parameter | G SHELL | CorroScan |
|---|---|---|
| Price | Free | Free |
| Rating | 2.4 (7 ratings) — better | — |
| Positive reviews | 19.4% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 2 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 171 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Jizhi Technology Company Limited | OFO Tech |
In-app purchases
G SHELL
- PRO membership (monthly plan)1 Month trial$4.591 Month
- 30 credits$1.19
- 90 credits$2.99
- PRO membership (one-month)$5.19
Show 1 moreShow fewer
- 300 credits$8.99
CorroScan
- CorroScan Pro$14.991 Month
- CorroScan Pro (Annual)$149.001 Year









