Sidebar | Fast Notes vs LogicSystem
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sidebar | Fast Notes
Quickly capture thoughts and ideas without the need for organization. Entries are timestamped logs that can be tagged as to-dos or personal wins/losses. Syncs across devices with custom themes and a stealth mode.
- Instant note capture
- Timestamped entries
- To-do list integration
- Personal scoreboard
- Cross-device sync
- Custom themes
- Stealth mode
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Open. Type. Done. Sidebar opens fast, keyboard ready for your ideas. No folders, no document names, no organizing. Just get the idea down before it's gone. Entries are timestamped logs, not documents. But some logs do more. Tag an entry as a todo and it joins your lightweight task list. Tag it as a personal win or loss and it goes to your scoreboard, ranked by topic. What's inside: Cross-device sync across iOS and macOS, custom themes, and stealth mode for sensitive notes.
LogicSystem
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LogicSystem puts a true AI agent in your hands—not just a chatbot, but a capable digital worker that plans, executes, and delivers, all inside a fully isolated, privacy-first ecosystem. YOUR OWN AGENTIC AI Create a personal AI agent and give it real work. Logic System agents don't stop at answers—they take action: • Browse the live web and research topics in depth • Write, run, and debug code in a real execution environment • Create documents, reports, and files you can actually use • Break big jobs into steps and work through them autonomously • Delegate long-running tasks to background sub-agents and check back when they're done PERSISTENT MEMORY & PROACTIVE WORK Your agent remembers your projects, preferences, and past conversations across sessions—no re-explaining yourself every time. Schedule recurring tasks, set reminders, and let it keep working while you're away. Results are waiting when you get back. DEDICATED, ISOLATED COMPUTE Every agent runs in its own isolated environment. Your queries, code, and files never touch third-party servers, are never used to train models, and are never shared with anyone. No data mining, no external exposure, no exceptions. NO HIDDEN CONTROL We control and manage powerful open-weight models ourselves—including advanced reasoning models that think through hard problems step by step. You're never subject to the data-mining practices of large tech corporations or governments. ALL-IN-ONE CAPABILITY Drafting policy, debugging code, researching markets, generating images, brainstorming your next product—your agent is a researcher, coder, analyst, and advisor in one platform. MINIMAL SETUP Start working in minutes. No servers to configure, no complex deployments—just instant, reliable AI agents. Logic System is engineered for professionals who demand both cutting-edge agentic capability and uncompromising data security. Download now and put your first AI agent to work.
Screenshots
Verdict
The clearest difference is update cadence: LogicSystem at every 2 weeks against Sidebar | Fast Notes's every 3 months. LogicSystem also leads on iOS requirement (15.0 vs 17.0). 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. Neither carries in-app purchases, so what you see is what you pay.
Sidebar | Fast Notes ships an update every 3 months, LogicSystem every 2 weeks. The most recent releases landed on September 20, 2026 and September 24, 2026 respectively.
| Parameter | Sidebar | Fast Notes | LogicSystem |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (7 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 57 MB |
| Age rating | 4+ | 17+ |
| Developer | Chris Woods | HST Innovations LLC |
In-app purchases
Sidebar | Fast Notes
No in-app purchases
LogicSystem
No in-app purchases
Questions
Is Sidebar | Fast Notes free?
Is LogicSystem free?
Do Sidebar | Fast Notes or LogicSystem have ads?
Which is updated more often, Sidebar | Fast Notes or LogicSystem?
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