Simple Cal with History vs dapter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Cal with History
This calculator app offers a straightforward way to perform calculations with a history log to review past results. Users can personalize the app's appearance with various stylish designs. An optional subscription removes all advertisements.
- Easy-to-use calculator
- Calculation history log
- 10 stylish design options
- Ad-free option via subscription
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Simple and easy to use is a calculator app . And history function You can confirm the calculation results in the history list . Design change You can choose from 10 kinds of stylish design . About the monthly subscription (Remove Ads) - Subscribing removes all ads from the app. - Payment will be charged to your Apple ID at confirmation of purchase. - The subscription renews automatically unless it is canceled at least 24 hours before the end of the current period. - You can manage or cancel your subscription in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://one-pair.net/App/SimpleCalculator/privacy-policy-ad.html
dapter
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Apple Notes, if it could do math. Type rate = 45 on one line and rate × hours on the next, and the answer appears in the margin as you type. Every line that looks like a calculation resolves instantly. Everything else stays prose. No account. No servers of ours. Nothing to sign up for. WRITE MATH LIKE A SENTENCE • 20% of 300, 200 - 10% — percentages, markups and discounts the way you'd say them • 100 usd in eur, $50 + 20% — live currency rates, formatted as money • 10 km + 5 m in miles, 6 m / 2 s → 3 m/s — real unit algebra, not string replacement • today + 21 days, 3 days + 12 hours — dates and durations that count themselves A NOTE THAT ADDS ITSELF UP • Name a value and reuse it: rate = 45, then rate × hours three lines later • sum a block for budgets, receipts, invoices and quick tallies • round, sqrt, pi and the rest, for when a note needs to be a little smarter STILL A REAL NOTES APP Folders, pinned notes, search, a home-screen widget, Recently Deleted, and a quick scratch pad one tap from anywhere. Light and dark themes. Available in English, Russian and Kazakh — and the calculator understands all three, because the parser does, not just the interface. PRIVATE BECAUSE OF HOW IT'S BUILT Every calculation runs on your device. Your notes live in local storage on your iPhone, not in an account with us. All the math, unit conversion and currency work is free, forever — there is no calculation behind the paywall. BUILT FOR Freelance quotes and invoices. Monthly budgets. Travel money. Recipe scaling. Any moment you'd reach for a calculator and then forget what the numbers were for. DÄPTER PLUS Unlimited notebooks, and iCloud sync across your iPhones through your own Apple account. Monthly, yearly, or a one-time lifetime unlock — pay once and you're done. Plus is what keeps däpter independent: no ads, no investors, no data sold. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: dapter at none against Simple Cal with History's shown. dapter also leads on update cadence (every 10 days vs every 37 months) and iOS requirement (16.4 vs 18.0). On price, 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. Simple Cal with History sells 1 in-app purchase, starting at $0.49 per month and dapter sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
Simple Cal with History ships an update every 37 months, dapter every 10 days. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.
| Parameter | Simple Cal with History | dapter |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (29 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 29 — better | — |
| Update frequency | Every 37 months | Every 10 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 6 MB | 90 MB |
| Age rating | 4+ | 4+ |
| Developer | NORIHIKO HAYASAKA | Anuar Shaidenov |
In-app purchases
Simple Cal with History
- Remove Ads (Monthly)$0.491 Month
dapter
- Dapter Plus Monthly3 Days trial$0.991 Month
- Dapter Plus Yearly3 Days trial$4.991 Year
- Dapter Plus Lifetime$9.99









