Estratum vs Anduryl
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Estratum
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LESS NOISE IN YOUR HEAD. MORE CLARITY IN YOUR DAY. How much energy do you spend trying not to forget an appointment, an idea, a task or a small detail you may need later? Estratum reduces that mental load. Write down what is on your mind and get back to your day: it saves it, organizes it and helps you find it when it matters again. CAPTURE BEFORE IT SLIPS AWAY Write, dictate or photograph a printed appointment, a receipt, a whiteboard or a set of instructions. No folders, categories or tags to prepare. Organization happens afterwards. AI DOES THE INVISIBLE WORK Estratum recognizes notes, tasks, appointments, deadlines, expenses, ideas and memories. You capture the moment; the app brings order to it. Search by meaning retrieves the context even when you do not repeat the exact words you wrote. Ask βWhat did we decide about Atlas?β or βWhat do I have tomorrow?β and open the notes behind the answer. CAPTURE WITH SIRI, TOO Save a note with Siri or Shortcuts without finding the app first. Text is saved before confirmation and organized when Estratum opens. Voice and dictation depend on Apple. YOUR DAY, IN ONE THREAD See appointments, tasks and dated items in a timeline centered on today. Move into the past or future and return to today when you need to. MORE ROOM, ON IPAD AND IPHONE DUO TOO On iPad and an open iPhone Duo, keep your timeline in view while writing. Notes shows list and detail together; Calendar pairs the month with your agenda. Close Duo to return to one column. When partially folded, content stays clear of the hinge. Draft text survives display changes. YOUR MEMORY CAN LIVE ON YOUR DEVICE With a local engine, Estratum organizes, searches and answers on-device. After the initial download it can work without internet: your notes are not sent to a server, no account is required, and there are no token or query fees. Local AI depends on device compatibility and memory. Below 6 GB RAM, Qwen is not offered; Apple's model appears only when available. Without a compatible local engine, you need to configure your own external-provider API key, subject to that provider's fees. If you prefer an external provider, connect your own OpenAI or OpenRouter key. The app warns you before sending the required context to the provider you choose. On compatible systems and devices, Apple PCC is another optional cloud engine: it requires consent and internet, may send text and context to Apple, and has a quota separate from Pro. ESTRATUM REMEMBERS FOR YOU. PRO NOTICES, TOO. Free includes the same AI, every engine, unlimited saves, basic reminders and 7 questions per week. Estratum Pro adds unlimited questions, Knowledge Map, Diary, reminders that choose a useful lead time, and automatic Home/Work switching. Try it free for 14 days, then unlock it with one purchaseβno subscription or recurring fee. Designed for people with ADHD, neurodivergent minds and anyone living with a high mental load. Estratum does not diagnose or treat any condition. YOUR LIFE IS YOURS The main database lives on your device. With Pro, Apple Calendar integration is optional and writes to a separate calendar. No ads. No selling your data. Write it down. Estratum takes care of the order.
Anduryl
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Anduryl helps analysts organize and combine structured expert judgments. Create experts, define seed and target questions, enter quantile estimates, and calculate a combined decision-maker distribution using Cooke's classical model. Features: - Manage expert panels and user-defined weights - Create calibration and target questions - Enter reusable quantile assessments - Calculate equal, user, global, and item-weighted results - Review calibration, information, and combined performance scores - Compare expert weights and performance with native charts - Inspect expert and decision-maker uncertainty ranges - Use detailed, publication-based help throughout the workflow - Start a confirmed blank project without reinstalling the app - Save projects locally - Import and export native Anduryl JSON projects Privacy comes first. Anduryl works offline, has no accounts, contains no advertising or analytics, and does not collect personal data. Projects remain on your device unless you choose to export or share them. Anduryl for iOS is free software distributed under the GNU General Public License, version 3. It is an independent SwiftUI adaptation of the original ANDURYL Python application.
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Verdict
The clearest difference is in-app purchases: Anduryl at none against Estratum's 2. Anduryl also leads on update cadence (every 5 days vs every 10 days). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Estratum sells 2 one-off in-app purchases. Anduryl asks for nothing beyond the download.
Estratum ships an update every 10 days, Anduryl every 5 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.
| Parameter | Estratum | Anduryl |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 days | Every 5 days β better |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 β better |
| Further details β not scored | ||
| Size | 29 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | LyXeoN | Samuel Velazquez |
In-app purchases
Estratum
- 14-day TrialFree
- Estratum Pro β Lifetime$17.99
Anduryl
No in-app purchases









