Comparison

Caldy vs SmartTracker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Read full description

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

About

SmartTracker

Effortlessly monitor prices on any website and receive instant alerts when deals drop. Visualize price history with clear charts and organize wishlists. Integrates with Siri and Shortcuts for seamless price tracking.

Highlights
  • Track prices on any website
  • Set smart price alerts
  • View price history charts
  • Home and Lock Screen widgets
  • Siri and Shortcuts integration
  • Organize wishlists and collections
  • Export data to CSV
Features
Read full description

Stop refreshing product pages just to catch a discount. SmartTracker watches the page for you and tells you when the price changes. SmartTracker is your private price‑tracking companion for iPhone, iPad, and Mac. Track prices on any website, set smart alerts, and see clear price history charts, so you can judge a deal for yourself. Built to work on any website. If you find one that doesn't, email me and I'll add support for it. Features: • Watch any text on a page, not just the price — stock status, shipping ETA, version numbers — and get alerted the moment it changes. • Track prices and discounts on any website in any currency. • Track values behind a login with Signed-In Sites: sign in to a site once and refreshes keep using that session. Your username and password are never saved. • Set target prices and get notified when deals drop below your budget. • See clear price history charts to spot trends at a glance. • Glance at your latest prices right from your Home Screen and Lock Screen with widgets. • Stay hands‑free with Siri and the Shortcuts app — add items, refresh prices, and open deals with a tap or your voice. • Organize wishlists and collections for different stores, products, or projects. • Sync everything instantly across iPhone, iPad, and Mac with iCloud. • Export your full history as CSV files. • And much more… Your data stays on your devices and in your iCloud account: no account, no ads, no data selling. We collect only anonymous data on how the app is used, and you can turn that off in Settings. Start free with up to 5 tracked items and 3 collections. Once you are ready, unlock unlimited items, unlimited collections, background refresh, and Signed-In Sites with a single one‑time purchase or, if you prefer, an auto‑renewing annual subscription. Download SmartTracker today, add your first few products, and let it watch the prices so you don’t have to. Privacy Policy: https://www.smarttracker.tech/privacy Terms and Conditions: https://www.smarttracker.tech/terms

Screenshots

Caldy4 screens
SmartTracker4 screens

Verdict

The call

The clearest difference is price: SmartTracker at Free against Caldy's $2.99. SmartTracker also leads on review sentiment (100% vs 57%) and rating (5.0 vs 2.0). Caldy's advantage is in-app purchases (none vs 2) and iOS requirement (17.6 vs 26.0). On ratings volume and ads 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

CostPrice · In-app purchases · Ads · Monetization

SmartTracker is free to download; Caldy costs $2.99 up front. SmartTracker sells 2 in-app purchases, starting at $6.99 per year. Caldy asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SmartTracker holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews point the same way: 57% of Caldy's written reviews are positive against 100% of SmartTracker's.

UpkeepUpdate frequency

Caldy ships an update fortnightly, SmartTracker every 6 days. Both last shipped on October 24, 2026.

Scorecard8 real differences · 2 level
Caldy versus SmartTracker: the parameters behind the verdict, then further details
ParameterCaldySmartTracker
Price$2.99Free — better
Rating2.0 (2 ratings)5.0 (3 ratings) — better
Positive reviews57.1% of reviews100.0% of reviews — better
Number of ratings23 — better
Update frequencyFortnightlyEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhoneiPhone, iPad, Mac — better
Requires iOS17.6 — better26.0
Further details — not scored
Size1 MB49 MB
Age rating4+17+
DeveloperAlventir LtdHugo Prione

Customer experience

Caldy

All ratings2 ratings
Positive0.0%
Neutral50.0%
Negative50.0%
Written reviews7 reviews
Positive57.1%
Neutral28.6%
Negative14.3%

SmartTracker

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Caldy

No in-app purchases

2 purchases

SmartTracker

Subscriptions1
  • Premium - Annual7 Days trial$6.991 Year
One-time1
  • Premium - One-time purchase$19.99

Questions

Is Caldy free?
Caldy costs $2.99, with no in-app purchases.
Is SmartTracker free?
SmartTracker is free to download, with in-app purchases available.
Which has better reviews, Caldy or SmartTracker?
SmartTracker is rated higher. Caldy averages 2.0 out of 5 from 2 ratings, while SmartTracker averages 5.0 from 3 ratings.
Do Caldy or SmartTracker have ads?
Neither Caldy nor SmartTracker shows ads.
Which is updated more often, Caldy or SmartTracker?
Caldy ships an update fortnightly, and SmartTracker every 6 days. Most recently, Caldy was updated on October 24, 2026 and SmartTracker on October 24, 2026.

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