Bolt Exchange vs 집계산
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bolt Exchange
This app offers a straightforward currency conversion experience with a minimalist design. It allows for quick, one-click conversions and functions even without an internet connection, making it a lightweight and efficient tool.
- One-click currency conversion
- Offline functionality
- Minimalist design
- Lightweight and small size
- Easy to use interface
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** Most Simple Currency Converter No more complex converter. It's easy to use - one click converting. Simple, Light, Minimum Size. Even works when no internet access.
집계산
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Before buying a home, enter the price once to get acquisition tax, local education tax and the brokerage fee cap, plus a list of costs this app does not calculate, in one purchase-cost memo you can share. It never presents a single "total cash needed" number. Common calculations for buying, holding and renting property in Korea are also included. The app is in Korean and follows Korean tax and lending rules. 【Calculators】 • Acquisition tax • Capital gains tax (supported national-tax cases, incl. long-term holding deduction) • Holding tax (property tax components) • Loan interest: equal payment vs. equal principal • Loan limit: LTV and DSR terms shown separately as arithmetic examples (not an approved limit) • Jeonse/monthly rent conversion • Rental yield • Brokerage fee • Area conversion (pyeong / m²) Housing subscription points are not scored, because eligibility periods and dependents cannot be confirmed from the inputs; the screen lists the rules to check instead. History and favorites stay on your device, and you can share results with the app you choose. No ads, no tracking, no sign-up. From this version, some conditions without confirmed sources (certain acquisition-tax cases, rural special tax, a combined LTV/DSR limit, etc.) are shown as "not calculated in this app" instead of a number; previous records remain viewable. Results are estimates for reference. Each screen shows its check date, supported scope and excluded items; confirm actual taxes, loan limits and eligibility with the relevant authority, your bank or a tax professional.
Screenshots
Verdict
The clearest difference is ads: 집계산 at none against Bolt Exchange's shown. 집계산 also leads on update cadence (every 6 days vs every 19 months). On price, in-app purchases, device support and iOS requirement 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Bolt Exchange ships an update every 19 months, 집계산 every 6 days. The most recent releases landed on October 22, 2026 and October 25, 2026 respectively.
| Parameter | Bolt Exchange | 집계산 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 73.1% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 19 months | Every 6 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 9 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | SeokWoo Rho | HeungYeol Kim |
In-app purchases
Bolt Exchange
No in-app purchases
집계산
No in-app purchases









