複利Magic! vs FIRE Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
複利Magic!
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少ない操作でカンタン複利の計算! 元金と毎月積み立てた金額の複利を計算します 1ヶ月毎の利息と合計を表示します
FIRE Calculator
Visualize your entire financial future on a single timeline, from saving to retirement drawdown. Instantly adjust your plan with sliders and explore various withdrawal strategies. Track your net worth and assess plan reliability with a Monte Carlo simulation.
- Single timeline visualization
- Instant plan updates via sliders
- Multiple withdrawal strategy comparison
- Side FIRE income integration
- Net worth tracking
- Monte Carlo success score
- Year-by-year financial projection
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See exactly how long your money lasts. FIRE Timeline turns retirement math into one picture: a single timeline from the day you start saving to the day you draw it all down — or the day it simply doesn't run out. Move one slider and watch your whole plan update instantly. No spreadsheets, no accounts, no waiting. WHAT YOU CAN DO • See your plan as one timeline — saving years and drawdown years, side by side • Ask "When can I FIRE?" or "How much can I spend a month?" and get an instant answer • Compare withdrawal strategies: fixed amount, the 4% rule, front-loaded spending, or design your own • Try Side FIRE — see how many years earlier you could quit full-time work with a bit of side income • Save the plans you're torn between and overlay them on one chart • Log your real net worth over time and see exactly where you've drifted from plan • A Monte Carlo success score shows how your plan holds up across 1,000 possible futures • Full year-by-year table from today to age 100+ BUILT FOR YOUR SITUATION Whether you're maxing out a 401(k) or IRA, chasing FIRE in your 30s, or already retired and drawing down, FIRE Timeline adapts the starting numbers to where you are. YOUR DATA STAYS ON YOUR DEVICE Every calculation happens locally. No account required. No ads that show themselves — you choose if and when to watch one. Free to start. Premium removes limits and unlocks the full feature set, with new features added regularly. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: 複利Magic! at none against FIRE Calculator's 2. 複利Magic! also leads on ads (none vs shown). FIRE Calculator's advantage is update cadence (every 2 weeks vs every 3 months). On price, 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. FIRE Calculator sells 2 in-app purchases, starting at $1.99 per month. 複利Magic! asks for nothing beyond the download.
複利Magic! ships an update every 3 months, FIRE Calculator every 2 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | 複利Magic! | FIRE Calculator |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 16.2 — better | 17.0 |
| Further details — not scored | ||
| Size | 1 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Shusuke Haramoto | Ke Tong |
In-app purchases
複利Magic!
No in-app purchases
FIRE Calculator
- Premium (Monthly)7 Days trial$1.991 Month
- Premium (Yearly)7 Days trial$14.991 Year









