Comparison

Nudgy vs ChartPrism

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

Head to head
About

Nudgy

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Knowledge changes nothing unless you act. Nudgy bridges the gap between theory and practice: every day you receive varied micro‑impulses you can complete in 2–3 minutes to build new habits. – 34 modular superpowers: From communication and coaching to stress and time management to self‑organization — choose what you want to work on. – Micro‑impulse + learning nugget: Front side = a concrete action; back side = a brief explanation with background. – No routine, lots of variety: Instead of doing the same exercise every day, you get varied tasks that fit seamlessly into your day. – Gamification & progress: Collect experience points, level up your superpowers and see your progress. – Immediately applicable: Every action is practical and based on proven behavioural psychology methods. Who is it for? Anyone who wants to turn knowledge into action — whether you want to expand your professional leadership skills, improve your communication or foster personal growth. How it works: Choose a superpower → complete the micro‑impulse → read the learning nugget → celebrate your progress. Start today and bridge your knowing–doing gap!

About

ChartPrism

Create publication-ready charts from your data on iPhone and iPad. Offers 41 chart types and 400 themes, with offline functionality and no account required. Export as PNG or PDF.

Highlights
  • 41 chart types
  • 400 color themes
  • Offline functionality
  • CSV import
  • PNG/PDF export
  • iCloud sync
  • App lock
Features
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Turn raw numbers into beautiful, publication-ready charts right on your iPhone and iPad. ChartPrism is a fast, fully on-device chart maker — no account, no sign-up, and everything works offline. Build 41 chart types across 8 families: COMPARISON — weigh values side by side Bar, Grouped Bar, Stacked Bar, Horizontal Bar, Pictorial Bar, Range Bar, Waterfall, Radar, and Gauge. TIME SERIES — follow change over time Line, Step Line, Area, Stacked Area, Theme River, and Calendar Heatmap. DISTRIBUTION — see how a whole breaks down Pie, Donut, Rose, Funnel, and Histogram. RELATIONSHIP — reveal correlation and density Scatter, Bubble, Animated Scatter, Heatmap, and Parallel Coordinates. STATISTICAL — summarize spread and ranges Candlestick, Box Plot, Error Bars, and Violin. HIERARCHY — break down part-to-whole structure Treemap, Nested Treemap, Sunburst, Tree, and Icicle. FLOW — trace connections and movement Sankey, Network, and Chord. GEOGRAPHIC — map your data by region World Choropleth, US States, Europe, and Geo Scatter. MAKE IT YOURS Style every chart with 400 built-in color themes spanning 10 moods — warm, cool, earthy, pastel, bold, muted, vintage, nature, monochrome, and jewel. Star your favorites for one-tap access, then fine-tune individual data points, titles, legends, axes, and styling until it looks exactly right. GET DATA IN FAST Import a CSV file, paste straight from the clipboard, or type values by hand. The editor adapts to your data shape — including OHLC, box-plot stats, matrices, hierarchies, flows, and map coordinates. SHARE AND KEEP Export crisp PNG or PDF images, send them through the share sheet, and save every chart to a searchable library. Turn on optional iCloud sync to carry your work across devices. PRIVATE BY DESIGN Charts render on your device and the app works completely offline — no account, no uploads. Lock the app behind Face ID whenever you like. Start free and create a chart a day. ChartPrism Pro unlocks the full chart library, every theme, and unlimited saves. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Nudgy4 screens
ChartPrism4 screens

Verdict

The call

The clearest difference is in-app purchases: Nudgy at none against ChartPrism's 3. Nudgy also leads on iOS requirement (15.0 vs 26.2). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ChartPrism sells 3 in-app purchases, starting at $8.99 per month. Nudgy asks for nothing beyond the download.

Scorecard2 real differences · 7 level
Nudgy versus ChartPrism: the parameters behind the verdict, then further details
ParameterNudgyChartPrism
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyWeekly—
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better26.2
Further details — not scored
Size367 MB48 MB
Age rating4+4+
DeveloperHomo Ludens GmbHLife Utility Apps, LLC

In-app purchases

None

Nudgy

No in-app purchases

3 purchases

ChartPrism

Subscriptions2
  • Monthly$8.991 Month
  • Yearly$34.991 Year
One-time1
  • Lifetime Access$49.99

Questions

Is Nudgy free?
Nudgy is free to download, with no in-app purchases.
Is ChartPrism free?
ChartPrism is free to download, with in-app purchases available.
Do Nudgy or ChartPrism have ads?
Neither Nudgy nor ChartPrism shows ads.

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