InkCalc vs Memol
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
InkCalc
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Write "29 dollars an hour, 22 hours a week, for 4 weeks." Tap AI. Get 2,552. InkCalc is a calculator you write in sentences. No re-punching numbers into a keypad, no wondering what that figure was for. Units, live currency, dates and percentages all work inline, right in your notes. Write expressions line by line and results appear on the right, accumulating over time alongside written notes β a calculator built to be kept open as a long-running notebook, not a scratchpad. For iPhone, iPad and Mac. Universal Purchase means one subscription covers all three. Starts with a 1-month free trial (auto-renews after that β see SUBSCRIPTION below for details). β AI-NATIVE ACTIONS (subscription required) β AI β Natural language to expression Write "29 dollars an hour, 22 hours a week, for 4 weeks", tap the AI button in the toolbar, and AI converts it to `29 * 22 * 4`. Fix β AI fixes errors With one tap, AI replaces a parser-failed line with a corrected expression. Summary β One-to-three-line note summary AI reads your whole note and summarizes the intent and conclusion in plain natural language. Intent β Intent inference from comments Write a question comment like `# Monthly communications total?`, and AI analyzes the relevant lines and inserts a summing formula directly below the question. Backends: Apple Intelligence (default, on-device or via Apple Private Cloud Compute with end-to-end encryption β neither the developer nor any third party can read the data), or bring-your-own-key options. With a bring-your-own-key backend, the user supplies their own credentials and prompts are sent to the chosen provider. β CALCULATOR FEATURES β β’ Unit math: `5 km in miles`, `1 kg as lb`, `100 USD in JPY` β’ Real-time currency conversion (USD, EUR, JPY, GBP, and more) β subscription required β’ Percent: `20% of 100`, `1000 + 10%` β’ Hex / binary / octal literals + bitwise ops: `0xff & 0x0f`, `255 in hex` β’ Line references: `ans`, `line2`, `sum above`, `avg above`, `total` β’ Dates: `2025-04-25 + 7 days`, `today + 30 days`, date diff in days β’ Functions: sqrt, sin/cos/tan, ln/log, round/floor/ceil, sum/min/max/avg, and more β’ Constants: pi, e, tau β’ Variables: assign with `x = 5` and reuse on later lines β AS A CALCULATION NOTE β β’ Multiple notes + folder selection. Each note is a local `.inkcalc` file. β’ iCloud Drive sync keeps your notes up to date across iPhone, iPad, and Mac. β’ Open `.inkcalc` files directly from the Files app. β’ Export to Markdown / CSV. β UI β β’ Designed for iPhone and iPad (two-pane list + editor layout on iPad) β’ Quick bar above the keyboard: comment toggle and one-tap calculator symbols β’ Dark, minimal UI with a light/dark appearance setting β’ Adjustable font size and decimal precision β PRIVACY β The developer collects nothing β no server, no telemetry, no analytics. With Apple Intelligence as the backend, requests stay on-device or are processed through Apple Private Cloud Compute with end-to-end encryption β neither the developer nor any third party can read the data. See the in-app privacy policy for details. β SUBSCRIPTION β β’ Title: InkCalc Monthly (auto-renewable subscription) β’ Length: 1 month, auto-renewing β’ Price: $1.99 / month (Apple displays your local price in-app) β’ Free trial: 1 month for new subscribers β’ Payment is charged to your Apple ID after the trial. The subscription auto-renews unless canceled at least 24 hours before the end of the current period. β’ Manage or cancel in Settings β [your name] β Subscriptions, or right from the app's own settings screen. β’ Privacy Policy: https://inkcalc.app/privacy β’ Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ β REQUIREMENTS β iPhone and iPad: iOS 17.0 or later Mac: macOS 13.0 or later (Apple Silicon and Intel) Universal Purchase β one subscription covers all three devices.
Memol
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Memol is a notes app built on one idea: it's okay to forget. Notes aren't for remembering. Write something down, let it leave your head, and just ask the AI when you need it back. Write as a team, and a colleague picks it up right when you've forgotten it. We built Memol so you can work with a clear head, always. γWho it's forγ β’ People who take notes but can never find them later β’ People whose notes turn to chaos because tagging and foldering is a hassle β’ Companies and shops where only one person knows how something works β’ People frustrated by Evernote's price increases β’ People who find Notion too heavy and feature-packed β’ Students and their study notes γWhat makes Memol differentγ β AI search β no tags, no folders needed The AI understands every note by meaning. Search with vague, natural phrases like "the hiring plan we decided in last month's leadership meeting" or "that design idea I had at the cafe" and you'll find it. Notes you forgot to tag, notes from back when your folders were a mess β all findable. β Share with your team and end key-person risk Invite people to a workspace and everyone can AI-search any note, no matter who wrote it. No more work grinding to a halt when a veteran is out, or knowledge vanishing when someone leaves. Important notes can be locked to "view only," so you can share them without risking unwanted edits. β Great for students, too Lecture notes, exam prep, report drafts, reading notes. β Simple, pleasant writing A focused editor with the extras stripped away. Markdown, image attachments, tables, and code blocks are all there when you need them. You can also capture voice notes that transcribe as you speak, and let AI start a draft from just a topic. γHow people use itγ β’ Sharing meeting minutes across a team β’ Sharing customer records (salons, clinics, animal hospitals, and more) β’ Managing client-specific rules (accounting firms, professional services) β’ Sharing recipes and manuals across locations (restaurants) β’ Building up a library of repair cases (auto repair shops) β’ Property notes and customer history (real estate) β’ Lecture notes, exam prep, reading notes (students) If you take notes but never really use them, if your team struggles with key-person risk, if you're looking to move off Evernote, or if you're a student β if even one of these is you, give Memol a try. Website: https://memol.app X: @memol_app Contact: support@memol.app
Screenshots
Verdict
The clearest difference is in-app purchases: Memol at none against InkCalc's 1. Memol also leads on update cadence (every 2 days vs fortnightly) and iOS requirement (14.0 vs 17.0). On price, ads and device support 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. InkCalc sells 1 in-app purchase, starting at $1.99 per month. Memol asks for nothing beyond the download.
InkCalc ships an update fortnightly, Memol every 2 days. The most recent releases landed on October 28, 2026 and October 11, 2026 respectively.
| Parameter | InkCalc | Memol |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Every 2 days β better |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 14.0 β better |
| Further details β not scored | ||
| Size | 2 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | KENTARO SOGA | LINKAKU inc. |
In-app purchases
InkCalc
- InkCalc Monthly1 Month trial$1.991 Month
Memol
No in-app purchases









