Owlculator vs Calcula Keyboard
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Owlculator
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Owlculator gives you one place for quick calculations and deep math notes. You can move from simple keypad taps to multi-line workflows without changing apps. Every result updates instantly so your thinking stays in flow. Use Owlculator when you need speed for daily math and structure for bigger planning sessions. Open Basic mode for immediate answers, then switch to Notes to build formulas, save context, and return later with everything intact. **Tap-First Basic Mode** Basic mode is designed for moments when you need a number right now. Large controls and immediate output help you finish routine math quickly and keep momentum through your day. **Live Notes With Line Results** Notes mode evaluates each line as you type, so long calculations stay readable from top to bottom. You can edit earlier lines and watch downstream values refresh right away. **Conversions Built Into Workflow** Handle units, currency, percentages, and mixed expression formats in the same workspace. You get practical answers for real scenarios without jumping between separate tools. **Reusable Variables and Functions** Set values once and reuse them across longer calculations to reduce repeated typing. This makes budgeting, planning, and formula-heavy work more consistent and less error-prone. **History and Note Recall** Review recent calculator activity in tape history and reopen saved notes anytime. Your previous work remains easy to revisit, refine, and continue when new details appear. Download Owlculator and turn everyday math into a clear, reliable workflow you can trust.
Calcula Keyboard
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Calcula is a lightweight scientific math keyboard for iPhone. After you add the keyboard, you can type expressions in chats, notes, browser search bars, or any system text field, and insert the result at the current cursor position. Version 1.0 focuses on the core workflow: a basic keyboard, an f(x) scientific panel, DEG / RAD trigonometric input, in-keyboard history, and a companion app for setup guidance, basic settings, and About. It does not include accounts, cloud sync, or online computation. Settings stay on the device.
Screenshots
Verdict
The clearest difference is in-app purchases: Calcula Keyboard at none against Owlculator's 1. Owlculator's advantage is update cadence (every 4 days vs every 2 weeks). On price, ads, device support and iOS requirement 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. Owlculator sells 1 one-off in-app purchase. Calcula Keyboard asks for nothing beyond the download.
Owlculator ships an update every 4 days, Calcula Keyboard every 2 weeks. The most recent releases landed on September 11, 2026 and September 6, 2026 respectively.
| Parameter | Owlculator | Calcula Keyboard |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days β better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPad β better | iPhone |
| Requires iOS | 17.0 β better | 18.0 |
| Further details β not scored | ||
| Size | 2 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Fishington Studios | ι¦η ι» |
In-app purchases
Owlculator
- Upgrade to Pro$4.99
Calcula Keyboard
No in-app purchases





