iCrucible vs Sentinel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iCrucible
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iCrucible is an AI tool for Materials Science. Using this app, you can learn about how AI tools work for materials screening, and may discover candidate compounds. Learn more at our website: https://www.rimcs.co.jp/ iCrucible makes a prediction of a ternary system on your iPhone or iPad without external services, using graph neural networks and crystal prototype databases bundled in the app. You can watch the phase diagram redrawn at the end of each stage during performing the prediction task. Note that it is the phase diagram at absolute zero (i.e., 0 kelvin) and around zero pressure (i.e., 0 kilobar). Performance It takes a few seconds to minutes depending on the creation settings and your device. The app has a multithreading option to accelerate the core of the AI tool - for example, computationally intensive tasks are sped up around 2.5x on M1 iPad Air. Chemical System A chemical system is selected by choosing three unique chemical elements from: • Element List (with group and period restriction) or • Periodic Table Materials Screening The materials screening is conducted by thresholding two values: • Predicative Variance • Stability (Energy above Convex Hull) Phase Diagram Drawing The drawing is customizable and responsive with useful features: • Formula Labeling • Stability Thresholding • Zoom • Mark Size • Font Size • Balloon with each compound information Confidence Chart The chart shows the distribution of predicative confidences, and provides an overall confidence of the system prediction and the phase diagram. Compound Table The table shows stable and metastable compounds with stabilities and predicative confidences, from which you can easily choose candidate compounds. Settings You can set the default preferences of the chemical system creation and the phase diagram drawing in the App's Settings. The entrance of the In-App Shop is also located in the App's Settings. We offer Free, Standard, and Premium plan. You can subscribe to one of Standard and Premium plan at the In-App Shop. The Shop's Help describes the system tiers used for the content management. Free features: • Free Elements: H to Ar. (*) • Ensemble Size: M = 1. • Prototype Database: Small only. • You can take a note about each chemical system to not forget any novel findings and great ideas. Standard features: • Standard Elements: K to Xe. (*) • Ensemble Size: M is not more than 5. • Prototype Database: Small, Medium, and Large. • You can sort chemical systems into Stocks that are a storage for them. • Chemical systems can be shared between your devices by peer-to-peer Wi-Fi networking. Premium features: • Premium Elements: Cs to Pu except Po to Ra. (*) • Ensemble Size: M is not more than 10. • Prototype Database: all scales, that is, Small, Medium, Large, and Huge. • Multithreading can be used to accelerate the core of the AI tool - for example, computationally intensive tasks are sped up around 2.5x on M1 iPad Air. * Noble gas elements are not available. Flame Gems You need flame gems for a non-free system creation, and can buy them at the In-App Shop. The Shop's Help describes how to consume flame gems and has the cost calculator. You have to buy no flame gems if you are on the Free plan. Terms of Use: http://www.apple.com/legal/itunes/appstore/dev/stdeula
Sentinel
An AI-assisted platform for investigators and security professionals to gather, verify, and structure intelligence from public and government sources. It helps identify confirmed findings, uncertainties, and next verification steps.
- AI-assisted intelligence gathering
- Public and government source research
- Automated wanted and sanctions screening
- Entity resolution and image forensics
- Case management and field notes
- Professional reporting with branding
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Know more before making contact. Sentinel is an AI-assisted Field Intelligence Platform for investigators and security professionals who need more than search results. Finding information is only the beginning. Professional intelligence starts with verification. Sentinel combines broad public-source research with publicly available government, law-enforcement, regulatory, and international sanctions data, then helps structure what the evidence supports, what remains uncertain, and what to verify next. AI THAT SUPPORTS THE ANALYST Intelligence and security organizations increasingly use AI to sort, connect, and summarize large volumes of information. Sentinel brings that approach to field professionals, with one rule: AI does the first pass, the professional makes the call. - Field Brief: wanted and sanctions results, risk flags, identity confidence, and the top checks before contact, in seconds - Full Analysis: confirmed findings, possible associations, contradictions, information gaps, and source references - Web Brief: live web research written into a source-cited summary, combined with what Sentinel has already found Sentinel's AI states what it cannot verify, treats a name match as unverified until identity is confirmed, and never merges different people into one identity because they share a name or username. AI analysis is powered by Anthropic's Claude models. START WITH ONE IDENTIFIER Begin with a name, phone number, email, company, vehicle, domain, IP address, or location. Sentinel routes the research, organizes findings, and identifies gaps. 130+ PUBLIC SOURCES. ONE WORKFLOW. Automated wanted and sanctions screening against FBI, Interpol, OFAC, UN, EU, BIS, and Canadian lists, plus guided research across 130+ public sources. A check that cannot run is marked unavailable, never shown as a clean result. EVIDENCE PROVENANCE Finding → Source → Verification Status → Professional Decision. Mark findings Confirm, Reject, or Review. ENTITY RESOLUTION & IMAGE FORENSICS Map relationships between people, phones, emails, companies, addresses, vehicles, and domains with calibrated confidence. Analyze images for metadata, error level, compression and hidden-data indicators, without declaring an image authentic or manipulated from a single indicator. CASE & FIELD INTELLIGENCE Cases, AI field note analysis, voice dictation, timelines, maps, tasks, Watch List change detection, and saved Field Briefs. PROFESSIONAL REPORTING Investigator, Executive Summary, Due Diligence, and Client-Ready PDF reports with sources, methodology, limitations, and your own branding (Pro). LOCAL-FIRST PRIVACY Case data stays on your device, encrypted with AES-256-GCM, with keys in the iOS Keychain. Auto-lock, device integrity checks, and Wipe All Data, which also destroys the encryption keys. No ads. No tracking. AI requests pass through Sentinel's server, which does not store your search terms or AI responses. PLANS Essential and Pro use the same sources, methodology, and security. Pro adds capacity and advanced reporting. - Essential: 20 AI analyses and 20 Web Briefs per month, 10 searches per day - Pro: 100 AI analyses and 50 Web Briefs per month, unlimited searches, all report types and branding Monthly subscriptions through Apple. Cancel anytime in your Apple account settings. 7-DAY FREE TRIAL No card required, and the trial never converts to a paid plan on its own. It includes 5 Field Briefs, 1 other AI analysis, 1 Web Brief, and 5 searches per day. Full Analysis requires Essential or Pro. WHAT SENTINEL IS NOT Sentinel is not a people-search or background-check service and does not sell personal records. It is for lawful professional research. Not a consumer reporting agency; not for employment, tenant, credit, insurance, or other eligibility decisions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sentinelosint.github.io/sentinel-privacy/
Screenshots
Verdict
The clearest difference is update cadence: Sentinel at weekly against iCrucible's every 5 months. Sentinel also leads on iOS requirement (15.1 vs 17.2). 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. iCrucible sells 8 in-app purchases, starting at $2.99 per month and Sentinel sells 2 in-app purchases, starting at $29.99 per month. Whichever you choose, the download price is not the number that matters.
iCrucible ships an update every 5 months, Sentinel weekly. The most recent releases landed on October 5, 2026 and October 14, 2026 respectively.
| Parameter | iCrucible | Sentinel |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.2 | 15.1 — better |
| Further details — not scored | ||
| Size | 172 MB | 43 MB |
| Age rating | 4+ | 17+ |
| Developer | RIMCS LLC | Eija Huttunen |
In-app purchases
iCrucible
- Standard$2.991 Month
- Premium3 Days trial$4.991 Month
- Standard$29.991 Year
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- Premium$49.991 Year
- 500 Flame Gems$4.99
- 2,500 Flame Gems$23.99
- 5,000 Flame Gems$46.99
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- 10,000 Flame Gems$91.90
Sentinel
- Sentinel Solo$29.991 Month
- Sentinel Pro$79.991 Month









