Basic Calculator+ vs Open in Whatsup, Direct Chat
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Basic Calculator+
Perform essential arithmetic operations with a straightforward calculator app. Its large buttons and clear display ensure ease of use, supporting both portrait and landscape orientations.
- Basic four functions
- Clear display
- Large buttons
- Portrait and landscape modes
- iPad compatible
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This simple calculator with a clear display and large buttons makes calculations easy. Portrait and landscape modes both available on iPad. This app uses the basic functions of the calculator to make the simplest, best, free calculator in the app store.
Open in Whatsup, Direct Chat
Easily start WhatsApp chats with unsaved numbers without adding them to your contacts. Save time by directly opening conversations or sending SMS messages. Includes features like saving numbers, automatic country code detection, and chat wallpaper options.
- Start WhatsApp chats with unsaved numbers
- Save numbers for later use
- Automatic country code detection
- Option to change country code
- Send SMS messages
- Dark and light chat wallpapers
- Share status updates
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Message any phone number in one tap, without saving it to your contacts. Type or paste a number, and the chat opens straight away in WhatsApp or WhatsApp Business. Perfect for delivery drivers, sellers, landlords, clients and anyone you only need to message once. Your address book stays clean. HOW IT WORKS 1. Tap + 2. Type or paste the number. It formats itself for the country you pick. 3. Tap Open in WhatsApp. Done. FEATURES • Chat without saving: open a chat with any number, no contact needed • Any country: 240 countries and regions, searchable by name or dial code • Smart formatting: numbers format as you type, e.g. (415) 555-0199 • Remembers your country: starts with your region, then the last country you used • WhatsApp or WhatsApp Business: choose which app opens your chats • Saved numbers: keep numbers in the app with an optional name, never in your phone's contacts • Call or SMS: phone and text any saved number in one tap, with the full international number • Message yourself: send notes and links to your own number • Dark mode and iPad support DIRECT CHAT PRO One-time purchase, no subscription: • Pin contacts: keep the numbers you message most at the top • Home Screen quick chats: long-press the app icon to open a pinned or recent chat in one tap • No ads ALSO INCLUDED • Chat wallpapers: light and dark wallpapers to save to your photos • Status collection: quotes ready to copy and share PRIVACY • No access to your address book • Numbers you save stay on your device This app uses WhatsApp's public Click to Chat link to open a conversation. It is not made by, affiliated with or endorsed by WhatsApp or Meta. WhatsApp is a trademark of its owner. Please follow WhatsApp's Terms of Service when sending messages.
Screenshots
Verdict
The clearest difference is rating: Basic Calculator+ at 4.9 against Open in Whatsup, Direct Chat's 3.1. Basic Calculator+ also leads on review sentiment (88% vs 50%) and in-app purchases (none vs 1). Open in Whatsup, Direct Chat's advantage is update cadence (every 2 months vs every 4 months). On price, ads, monetization model 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. Open in Whatsup, Direct Chat sells 1 one-off in-app purchase. Basic Calculator+ asks for nothing beyond the download.
Basic Calculator+ holds the better App Store score, 4.9 against 3.1. That said, the two scores are not equally well evidenced: Basic Calculator+ has 261K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 88% of Basic Calculator+'s written reviews are positive against 50% of Open in Whatsup, Direct Chat's.
Basic Calculator+ ships an update every 4 months, Open in Whatsup, Direct Chat every 2 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.
| Parameter | Basic Calculator+ | Open in Whatsup, Direct Chat |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (261K ratings) — better | 3.1 (7 ratings) |
| Positive reviews | 87.5% of reviews — better | 50.0% of reviews |
| Number of ratings | 261K — better | 7 |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.2 |
| Further details — not scored | ||
| Size | 50 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Best Free Apps | Kraftos Tech Solutions LLP |
Customer experience
Basic Calculator+
Open in Whatsup, Direct Chat
Bugs and requests
Basic Calculator+
Reported bugs
2 issues- Incorrect calculation results
- Ads covering the screen
Requested features
3 requests- Add fraction button
- Implement order of operations
- Include memory function
Open in Whatsup, Direct Chat
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Basic Calculator+
No in-app purchases
Open in Whatsup, Direct Chat
- Remove Ads$0.99
Questions
Is Basic Calculator+ free?
Is Open in Whatsup, Direct Chat free?
Which has better reviews, Basic Calculator+ or Open in Whatsup, Direct Chat?
Do Basic Calculator+ or Open in Whatsup, Direct Chat have ads?
Which is updated more often, Basic Calculator+ or Open in Whatsup, Direct Chat?
Other comparisons
