CalcMate vs 23HourDay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CalcMate
This app combines note-taking with a powerful calculator, allowing you to perform calculations directly within your text. It handles math, currency, unit conversions, and date calculations, offering a streamlined alternative to spreadsheets and traditional calculators.
- Calculate math within text
- Currency and unit conversions
- Date calculations
- Organize notes with folders
- iCloud syncing
- Custom number keyboard
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CalcMate is a powerful notepad with a built-in calculator that lets you write naturally while solving calculations instantly. Enter numbers, text, percentages, currencies, dates, and units—all in the same note. Whether you’re calculating invoices, tracking expenses, creating budgets, or making quick estimates, CalcMate eliminates the need to switch between a notes app, calculator, and spreadsheet. What you can do • Perform calculations directly inside your notes. • Calculate percentages, taxes, discounts, and tips. • Convert currencies and units. • Calculate dates and durations. • Create invoices, budgets, bills, and shopping lists. • Reference previous calculations and keep everything organized. Try these examples • 100 + 5 tip • 1000$ + 20% fee • 900$ + 20$ delivery + 1.5% • 500 USD in EUR • 10 BTC in USD • Today + 5 days • Tomorrow + 10 days • 1 kg in lb • subtotal — calculates the total of all previous lines • line5 — uses the result from line 5 • # this is a comment …and much more. Features • Smart note editor with live calculations • Organize notes with folders • Trash folder to restore or permanently delete notes • iCloud sync across your Apple devices • Optional custom number keyboard • Optional running total displayed above the keyboard We’d love your feedback Have questions, suggestions, or need help? Contact us at: lazyboardapp+calcmate@gmail.com
23HourDay
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The App is designed to be a super-organizer, especially for people in business. The App ledgers all of your websites with each website having an individual handy note. A second program ledgers all of your other notes and also has a reminder alarm feature. Here's the link to the privacy policy : https://api.23hourday.com/privacy-policy Here's the link to the terms of use : https://api.23hourday.com/terms-of-use
Screenshots
Verdict
The clearest difference is ads: 23HourDay at none against CalcMate's shown. 23HourDay also leads on iOS requirement (14.0 vs 16.0). On price, update cadence, 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. CalcMate sells 5 one-off in-app purchases and 23HourDay sells 2 in-app purchases, starting at $12.95 per month. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 20, 2026 and October 6, 2026 respectively.
| Parameter | CalcMate | 23HourDay |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (96 ratings) — better | — |
| Positive reviews | 95.2% of reviews | — |
| Number of ratings | 96 — better | — |
| Update frequency | Fortnightly | Fortnightly |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 71 MB |
| Age rating | 4+ | 4+ |
| Developer | Elsayed Hussein | Thomas Smith |
In-app purchases
CalcMate
- Buy me a coffee$0.99
- Buy me 2 coffees$1.99
- Buy Me a burger$4.99
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- Remove Ads$5.99
- Buy Me a pizza$9.99
23HourDay
- Premium Plan - Monthly$12.951 Month
- Premium Plan - Yearly$149.001 Year









