NeuroCal vs String Theory!
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NeuroCal
This planner is designed for individuals who find traditional systems overwhelming. It offers a calm space to capture thoughts and organize them naturally, without pressure or guilt. The app uses a minimalist interface and gentle features to reduce cognitive load and promote mental clarity.
- Natural thought capture
- Automatic organization
- Calm, minimalist interface
- Week Focus Mode
- Completed items fade away
- Low friction, low anxiety design
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NeuroCal — The planner for brains that don't fit in boxes NeuroCal is built for ADHD minds, and for anyone who feels overwhelmed by traditional calendars, rigid to-do lists, or complicated productivity systems. Instead of clutter, pressure, or endless categories, NeuroCal gives you a calm space to capture what's on your mind and let things organize themselves naturally. There are no red badges, no guilt, and no productivity shame — just a clearer head and a simpler way to think. NeuroCal feels different from the moment you start using it. Capture a thought however it arrives: type it, say it out loud, or snap a photo. No menus, no categories, no friction. Type the way you naturally think — a quick phrase, a time and date, a grocery run, or a messy stream of ideas — and NeuroCal gently interprets it. Write "coffee tomorrow 2pm" or "therapy Thursday at 4" and it understands, placing things where they belong. Point your camera at a flyer, a screenshot, or an invitation, and NeuroCal reads it and offers to turn it into a plan. Groceries land the same way. "Apples, milk, and eggs at Costco" becomes one Costco list — the same for H-E-B, Target, Walmart, Sam's, and other stores. The first item starts the list. Check things off as you shop, tap + when you remember something else, and clear what's done when you leave. Not ready to decide? Drop anything — a photo, a half-formed idea — into your Remember Pile, and come back to it when you have the headspace. Snap now, sort later. Your day is divided into Now and Upcoming. Anything without a date stays in your Now view. Anything with a date appears in a clean, simple timeline that helps you see what's ahead without overwhelming you. When you want to quiet your mind even further, Week Focus Mode hides everything beyond the next seven days, with a soft "Want to peek ahead?" option to reveal future plans on your own terms. Life slips, and NeuroCal expects it. Miss something? There's no red-alert shame — just a gentle highlight and a one-tap way to push it to later, tomorrow, or next week. Bigger tasks can hold their own small steps, so something like "taxes" doesn't sit there as one intimidating block. And optional, kindly-worded check-ins help you circle back — never nagging, never guilt. The design is intentionally ADHD-friendly: soft animations, calm colors, subtle haptics, and a comfortable, non-stimulating feel throughout. Completed items fade away so you get closure without clutter. Choose the look that suits you, and let the interface stay grounded and quiet. NeuroCal is built for real minds — nonlinear thoughts, bursts of energy, forgotten tasks, random ideas, and last-minute changes. Instead of forcing structure, it adapts to how you actually think. Capture anything: tasks, plans, events, errands, grocery lists, reminders, stray thoughts, even full paragraphs. NeuroCal makes sense of each one and organizes it automatically, so everything you need lives in one simple, supportive space. Every part of the app is designed with intention: low friction, low anxiety, low clutter, all in service of clarity and calm. It's a tool that helps you feel lighter the moment you open it — a place where your thoughts become easier to manage and your week feels more doable.
String Theory!
This app provides a digital space to visually organize ideas, clues, and connections. Create interactive boards with photos, notes, and images, then link them with strings to uncover patterns. It's designed to help users map out complex information for various creative and analytical tasks.
- Unlimited detective boards
- Add photos, images, and notes
- Pin items freely
- Connect clues with strings
- Organize with tags
- Distraction-free design
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String Theory is a visual detective board app that helps you organize ideas, clues, and connections in one place. Create interactive boards where you can add Polaroid-style photos, notes, tags, and images, pin them freely, and connect everything with strings to reveal patterns and relationships. Perfect for detectives, writers, students, researchers, and creative thinkers, String Theory turns complex information into a clear visual map. Whether you’re solving a mystery, planning a story, organizing research, or brainstorming ideas, your board evolves as your thoughts connect. Features: - Create unlimited detective boards - Add Polaroid photos, images, and notes - Pin items anywhere on the board - Connect clues using realistic strings - Use tags to organize and group ideas - Clean, intuitive, and distraction-free design Organize your thoughts visually. See the connections. Follow the strings. Apple Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: NeuroCal at 5.0 against String Theory!'s 2.0. NeuroCal also leads on ads (none vs shown) and monetization model (free vs free with in-app purchases). String Theory!'s advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.6). On price, ratings volume and in-app purchases 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. NeuroCal sells 3 one-off in-app purchases and String Theory! sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
NeuroCal holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
| Parameter | NeuroCal | String Theory! |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 2.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 2 months | — |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 22 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Romero | Synthify Inc |
In-app purchases
NeuroCal
- Small Tip$0.99
- Medium Tip$1.99
- Large Tip$4.99
String Theory!
- Weekly$2.997 Days
- Yearly$24.991 Year
- One Time$29.99









