Simple Cidr vs Socratus
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Simple Cidr
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I often found that I didn't want a complicated calculator to translate Cidr notation into subnet mask and so fourth. So I made a simple one...
Socratus
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Socratus is a Personal knowledge management system that understands your notes, not just stores them. Ask questions, search by meaning, and see how your ideas connect, with AI that runs privately on your device. Think of it as your second brain, local-first and always under your control. FEATURES AI chat that answers from your own notes, with sources shown Private on-device AI that works offline Semantic and exact-word search with match scoring Interactive knowledge graph of related notes, exportable as an image Related notes ranked by similarity, with related-word tracing Distraction-free editor built for long-form thinking Markdown support and syntax highlighting Dictation, find and replace, adjustable font size, and one-tap save Structured tables with calculations and charts Daily scratchpad with Today's Notes Folders, a clear file tree, and recent files Import and read documents File-level encryption with QEncrypt Portable plain-text files with no lock-in Passwordless sign-in with a secure link WHO IT'S FOR Researchers, writers, students, developers, privacy-minded professionals, and anyone building a personal knowledge management system. PRICING Free for personal use. Professional and Enterprise licenses for commercial work. Turn your knowledge into a living system that grows with you. Socratus is a product of FiveRivers Technologies. Terms of Use (EULA): https://socratus.app/terms-of-service/ Privacy Policy: https://socratus.app/privacy-statement/
Screenshots
Verdict
The clearest difference is in-app purchases: Simple Cidr at none against Socratus's 4. Simple Cidr also leads on ads (none vs shown). Socratus's advantage is update cadence (every 3 weeks vs every 30 months). On price, device support 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. Socratus sells 4 in-app purchases, starting at $4.99 per month. Simple Cidr asks for nothing beyond the download.
Simple Cidr ships an update every 30 months, Socratus every 3 weeks. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.
| Parameter | Simple Cidr | Socratus |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 30 months | Every 3 weeks โ better |
| Ads | No โ better | Yes |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad | iPhone, Mac |
| Requires iOS | 17.6 | 16.0 โ better |
| Further details โ not scored | ||
| Size | 0 MB | 150 MB |
| Age rating | 4+ | 4+ |
| Developer | Luke Pilkington | Pepper |
In-app purchases
Simple Cidr
No in-app purchases
Socratus
- Pro Monthly$4.991 Month
- Pro Monthly$9.991 Month
- Pro Yearly$49.991 Year
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- Pro Yearly$99.991 Year









