Calto vs IdeaVault
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Calto
Read full descriptionHide full description
A smart calculator that works like math notes. --- Just type "price = 12000" and you're done. Calto is a free smart calculator that lets you write naturally like a math notepad while showing results in real-time. --- Why Calto? Regular calculators just show numbers. But real-life calculations are more complex. - Planning a trip budget and splitting expenses - Converting currencies while budgeting - Calculating tips, discounts, or freelance rates Calto handles all of this naturally, like taking notes. --- Key Features # Variables coffee = 4.50 lunch = 12.00 coffee + lunch = 16.50 Name your numbers. Make calculations meaningful. # Exponent Calculations 2^10 = 1,024 3^3 = 27 Power calculations in one line. # Natural Unit Conversion 10km in mile = 6.21 25C in F = 77 500g in oz = 17.64 100m2 in acre = 0.025 80+ units supported. Length, weight, volume, temperature, time, area, angle. # Live Exchange Rates 100 USD in EUR = 92.50 50 GBP in JPY = 9,375 6 major currencies. Auto-updated every 24 hours. # Mixed Currency Math 100 USD + 50 EUR = $154.25 Different currencies in one calculation. Just works. # Date Calculations today + 30days = 2026-03-04 today + 2weeks = 2026-02-16 Project deadlines, travel dates made easy. # Percent & Tip Calculator 20% of 5000 = 1,000 15% tip on 85 = 12.75 Discounts, tips, split bills. Type what you think. # Crypto Calculator 1 BTC in USD = 97,500 0.5 ETH in EUR = 1,650 Live cryptocurrency rates. Track your crypto portfolio. --- Perfect For - Trip budgeting and expense tracking - Freelancers calculating rates and invoices - Quick tip calculator and bill splitter - Real-time exchange rate conversions - Anyone tired of basic calculators --- Privacy First - Offline Calculator - All calculations stored on device only - Works offline - no internet required for basic math - Only anonymized usage statistics collected (for service improvement) - No account required --- Support Email: iamjw.dev@gmail.com Website: https://calto.iamjw.kr --- Download this free calculator now and experience math notes done right.
IdeaVault
Read full descriptionHide full description
IdeaVault is your personal idea storage โ a quiet, organized space for every app concept, business idea, or future project living rent-free in your head. Capture ideas before they disappear. Add a title, write a description, break it down into features, and tag it so you can find it later. Each idea gets its own color theme so your vault feels as creative as the ideas inside it. WHAT YOU CAN DO - Add ideas with titles, descriptions, tags and feature breakdowns - Organize with color themes and custom tags - Edit and refine ideas anytime - Mark ideas as done when they become reality - Export your vault as JSON or Markdown to keep your ideas backed up and portable YOUR IDEAS STAY YOURS Everything is stored locally on your device only. No account. No cloud. No one else can see what you're building. BUILT FOR THINKERS Whether you're a founder, designer, developer, or just someone with too many ideas and nowhere to put them โ IdeaVault gives your ideas a home. Capture, organize and never lose a great idea again.
Screenshots
Verdict
The clearest difference is device support: Calto at 3 against IdeaVault's 1. Calto also leads on iOS requirement (15.6 vs 18.5). On price, ads and in-app purchases there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Calto | IdeaVault |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 days | โ |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod โ better | iPhone |
| Requires iOS | 15.6 โ better | 18.5 |
| Further details โ not scored | ||
| Size | 30 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | JONGWOO PARK | Vsega Mega d.o.o |
In-app purchases
Calto
No in-app purchases
IdeaVault
No in-app purchases









