Caldy vs AmbilightSync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Caldy
This app offers a visual approach to calculations, linking values with arrows and allowing for dynamic editing of expressions. It supports organizing calculations into documents, plotting expressions, and includes various math functions. Ideal for complex calculations beyond basic arithmetic.
- Visual calculation linking
- Editable expressions with automatic updates
- Document-based organization
- Plotting and zooming capabilities
- Trigonometry and math functions
- Dark mode support
- Export sheets as images
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When you need more than a basic calculator, but do not want a spreadsheet. Caldy is a visual calculator: linked values are clearly shown with connecting arrows. The history is right in front of you. Caldy is a dynamic calculator: any number or operation can be changed and the linked expressions are updated automatically. Numbers can have labels, making the expressions easier to read. Results can be dragged and dropped on placeholders to connect expressions. Sub-expressions can be extracted to structure complex calculations. Sub-expressions can be extracted to structure complex calculations. Caldy percentage increase function, very handy to calculate tips or tax such as VAT. Caldy can plot expressions. Plots are zoomable and dynamic as well. Pinch on the plot to zoom in or out. Caldy is document-based. You can organize your calculation sheets like files, on your device or even on iCloud. Caldy has math functions, trigonometry functions. Caldy supports dark mode. All Clear button to clear the sheet. Undo and redo buttons. Cursor move buttons (left and right). Export to share the sheet as an image. A new intuitive calculator. - Familiar interface - Edit expressions anywhere anytime, results are updated automatically - Multiple sheets - Plots, pinch to change X range - Dark mode - Trigonometry functions, exponential, logarithm, percentage increase, absolute function - Add labels to numbers - Swap operands, extract subexpressions, move expressions
AmbilightSync
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With this app, you can effortlessly synchronize your smart home lights with any screen using your device’s camera—compatible with Apple Home and Philips Hue. When using Philips Hue, you can also sync your lights directly to the colors shown on your iOS device’s screen for an even more immersive experience.
Screenshots
Verdict
The clearest difference is price: AmbilightSync at Free against Caldy's $2.99. On update cadence, ads, 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
AmbilightSync is free to download; Caldy costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Caldy ships an update fortnightly, AmbilightSync every 3 weeks. The most recent releases landed on October 14, 2026 and October 17, 2026 respectively.
| Parameter | Caldy | AmbilightSync |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 2.0 (2 ratings) — better | — |
| Positive reviews | 57.1% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 1 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Alventir Ltd | Linus Kneser |
In-app purchases
Caldy
No in-app purchases
AmbilightSync
No in-app purchases









