OneTapCopy vs Jotsum
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
OneTapCopy
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OneTapCopy is not a notes app. It is a copy button for the text you send every day. WHY NOT JUST USE NOTES? - Notes: open the app, find the note, select the text, long-press, tap Copy. Four steps. - OneTapCopy: tap the card. One step. Notes are built to store text. OneTapCopy is built to hand it back to you fast. WHAT IT DOES - Tap a card to copy it instantly, with a short haptic buzz and a "Copied" toast - Group snippets into categories, with 8 colors and 28 emoji to pick from - Variable templates that fill themselves in as you copy: {{date}} and {{time}}, {{input:Label}} to type a value, {{choice:A|B|C}} to pick one, {{counter}} for a number that goes up on every copy - Sort by newest, most used or last used, and pin the snippets you need at the top - Search titles and bodies as you type - Lock any snippet behind Face ID, Touch ID or your device passcode; locked cards stay hidden until you authenticate, then stay open for five minutes - Show a snippet as a QR code, or send it through the system share sheet - When there is text on your clipboard, a banner offers to save it as a snippet - Export and import a JSON backup to move everything to a new phone, merging or replacing what is there - Dark mode, following the system or set by hand Ready-made example categories are waiting at first launch, so you can see how it all works before writing anything of your own. Everything stays on your device. No account, no sign-in, no cloud sync, no server. Free, with a banner ad that never gets in the way of a copy, plus one full-screen ad a day when you save a category.
Jotsum
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Jotsum is a calculator you write in plain words. Type your math and notes on the left; the answers appear on the right, live, as you type β no equals key, no buttons, no fuss. Itβs the everyday calculations you actually do: splitting a bill, converting currencies at todayβs rate, working out a percentage off, adding up a trip budget, or checking how many days until a deadline. Name your values and reuse them down the page, and Jotsum keeps the whole sheet in sync. SYNCS WITH YOUR MAC Your calculations sync over iCloud, so the sheet you start on your Mac is on your iPhone β and the other way around. No account, no sign-in; it uses your own iCloud. WHAT IT DOES β’ Plain-language math with variables β name a number, reuse it anywhere β’ Live currency conversion (160+ currencies + Bitcoin/Ethereum, no API key, no login) β’ Units β length, mass, time, volume, data, temperature, area, speed β’ Percentages done the human way β β20% off 80β, β12 is what % of 60β β’ Dates & durations β β3 days + 5 hoursβ, βdays until christmasβ, time zones β’ Scientific functions β sqrt, sin/cos/tan, logs, exp, powers, plus pi, e, tau β’ Finance β compound interest and mortgage payments β’ Multiple notes, organised in a tidy list PRIVATE BY DESIGN Everything stays on your devices and your own iCloud. No account, no analytics, no tracking. Currency rates are the only network request, and the app works offline too. Light and dark, with a warm editorial look thatβs easy on the eyes all day. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: OneTapCopy at none against Jotsum's 3. OneTapCopy also leads on iOS requirement (15.1 vs 17.0). Jotsum's advantage is ads (none vs shown). On price, update cadence 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. Jotsum sells 3 in-app purchases, starting at $0.99 per month. OneTapCopy asks for nothing beyond the download.
OneTapCopy ships an update weekly, Jotsum every 5 days. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.
| Parameter | OneTapCopy | Jotsum |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Every 5 days β better |
| Ads | Yes | No β better |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPod | iPhone, iPad, Mac β better |
| Requires iOS | 15.1 β better | 17.0 |
| Further details β not scored | ||
| Size | 36 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Seonggon Sim | Hrvoje Matosic |
In-app purchases
OneTapCopy
No in-app purchases
Jotsum
- Jotsum Pro$0.991 Month
- Jotsum Pro Yearly$9.991 Year
- Jotsum Pro$29.00









