BIG CALCULATOR. vs DeepRead
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BIG CALCULATOR.
This utility app offers a straightforward and visually clear calculator experience, ideal for users of all ages. Its large numbers and dark interface enhance readability, while landscape mode support on iPhones and iPads provides added convenience.
- Large numbers for easy viewing
- Simple and easy-to-see interface
- Landscape mode support
- Dark UI for eye comfort
- Suitable for all ages
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A calculator you can actually see — and now hear. Big Calculator does four things — add, subtract, multiply and divide — with keys and digits large enough to read and to hit first time. Nothing else is on the screen. It was built for people who find the calculator that came with their phone too small: for cataracts, glaucoma and macular degeneration, and for anyone whose eyes are simply not what they were. BIG WHERE IT COUNTS • Keys that fill the screen, with room between them • A readout in large, heavy type — no thin, faint numbers • Hide the memory keys and every remaining button grows • Long sums stay readable, grouped the way your country writes them • Portrait or landscape, on iPhone and iPad IT READS THE ANSWER OUT LOUD Turn on VoiceOver and Big Calculator speaks each result the moment it is worked out, so you never have to hunt across the screen for the answer. • Every key says what it is — "Add", "Equals", "Memory add" — not "plus sign" • Divide by zero and it says so, in words • Switch the speaking off in Settings if you would rather it stayed quiet Most calculators leave a blind user to explore the screen and guess. This one tells you. THREE LOOKS — PICK WHAT SUITS YOUR EYES • Warm Paper — dark type on a bright, warm background. Easiest to read for most people. • Night — white on black at high contrast, for eyes that find bright screens painful. • Classic — the original look, with bolder type. The whole app repaints the moment you choose, so you see the difference before you commit. A DESK CALCULATOR ON YOUR PHONE • M+, M− and MRC memory keys, where you expect them • AC clears everything, C clears just the entry • A key press you can hear — or silence it in Settings IN YOUR LANGUAGE, WITH YOUR NUMBERS Available in 33 languages. The decimal point and the thousands separator follow your own country's convention, so the number on screen is written the way you write it — 1,234.56 or 1.234,56 or 1 234,56, whichever is yours. NOTHING ELSE No account. No sign-in. No cloud. Nothing to learn. Your sums stay on your phone. Big Calculator is free, supported by a single banner advert at the bottom of the screen. SUBSCRIPTION Big Calculator Plus — an optional auto-renewing subscription, one year in length. No ads, plus a bigger keypad and display with more room for your calculations. Payment is charged to your Apple Account when you confirm the purchase. It renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your Apple Account settings. The price is shown before you confirm. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://developer-yl.github.io/big-calculator/privacy.html
DeepRead
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DeepRead is a minimalist eBook reader designed for immersive reading, supporting multiple file formats and empowering you to build a personal mobile library. Multi-Format Compatibility ·Preloaded with curated public-domain books for instant reading. ·Upload and parse TXT, ePub, UMD files with accurate chapter detection and formatting. ·More formats (PDF, DOCX, etc.) coming soon! Tailored Reading Experience ·Fully customizable settings: fonts, text size, themes, night mode, page-turn animations, and more. ·Clean, distraction-free interface with portrait/landscape support. ·Sync reading progress via iCloud (optional) for seamless cross-device continuity. Privacy-First Design ·Uploaded files are stored locally only—no server uploads or tracking. ·Optional file encryption and private shelves for sensitive content. ·Download DeepRead today and rediscover the joy of reading!
Screenshots
Verdict
The clearest difference is ads: DeepRead at none against BIG CALCULATOR.'s shown. DeepRead also leads on iOS requirement (13.0 vs 15.0). 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | BIG CALCULATOR. | DeepRead |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (57 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 57 — better | — |
| Update frequency | Weekly | — |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Adysseus | 江峰 郝 |
In-app purchases
BIG CALCULATOR.
No in-app purchases
DeepRead
No in-app purchases









