Comparison

税・割引計算機 vs Accumulate+ Compound Interest

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

Head to head
About

税・割引計算機

Features
Read full description

税・割引計算機は、日々のお買い物や必要な時に消費税やセールの割引計算がサクッとできるアプリです。何度も使うものは、リストに保存しておくこともできますよ。 ■■■■ 消費税・割引計算 ■■■■ サクッと、該当の値段を入力するだけで、消費税込みの値段や消費税抜きの値段、さらには割引後の値段を計算することができます。ただ計算機の数字入力のみですべて完結します。もちろん、消費税率は8%でも10%でも対応しています。設定からカスマイズしてください^^ ■■■■ 計算結果の保存一覧 ■■■■ 過去に計算をして、今後も使いそうだなと思ったものは、計算機画面で保存しましょう。保存された計算結果は、こちらのリストに表示されます。スーパーの割引率の差を計算したり、何度も使う消費税計算に是非、ご活用ください。

About

Accumulate+ Compound Interest

Features
Read full description

See exactly how your savings grow, and compare your options side by side. Accumulate+ is a compound interest calculator built for long-term investors. Enter your starting amount, expected annual return, regular contribution (monthly or yearly) and time horizon, and the app instantly charts how your wealth compounds year by year. Save each scenario as a record, then compare records or combine them into one total. 【Key Features】 ■ Compound Interest Calculator • Instant results from principal, contributions, return rate and years • Monthly or yearly contributions • Charts that separate what you put in from what you earned ■ Quick Setup • One-tap presets for 401(k) and Roth IRA to get started in seconds • Adjust any value afterwards to match your own plan ■ Compare (up to 3 scenarios) • Put different return rates, contributions or timeframes side by side • Charts and a summary table make the differences obvious • Find the plan that gets you to your goal ■ Combine • Stack several records into one chart to see your total across accounts • Great for 401(k) + IRA + brokerage, or several savings goals at once ■ Withdrawal Planning • Model drawing down your savings by a fixed amount or a fixed rate • See how long your money lasts and how the balance changes each year ■ Year-by-Year Table • Every year's total principal, interest, balance and return • Show your age and the calendar year alongside each row ■ Made for iPhone and iPad • On iPad, your records, chart and table sit side by side. No switching screens • Live preview while you create or edit a record on iPad • Dark Mode, large text sizes and VoiceOver supported 【Perfect For】 • Retirement savings: 401(k), IRA, Roth IRA and brokerage accounts • Financial independence and early retirement (FIRE) planning • Dollar-cost averaging: seeing what steady monthly investing adds up to • Saving toward a goal such as a home, college or an emergency fund • Teaching (or learning) how compound interest really works 【Why Accumulate+】 • Clean, focused interface. No sign-up, no account required • A handful of inputs. The app handles the math • Clear charts backed by detailed tables • Free to use. Focus Mode hides ads for a while after you watch one Start with what you have, stay consistent, and let time do the heavy lifting. Download Accumulate+ and see where your plan takes you. Note: This app provides calculations for educational purposes only and does not constitute financial advice. Returns are not guaranteed. Please consult a qualified financial advisor for personalized guidance.

Screenshots

税・割引計算機3 screens
Accumulate+ Compound Interest4 screens

Verdict

The call

The clearest difference is ads: 税・割引計算機 at none against Accumulate+ Compound Interest's shown. 税・割引計算機 also leads on iOS requirement (9.0 vs 16.0). Accumulate+ Compound Interest's advantage is update cadence (fortnightly vs every 21 months). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

税・割引計算機 ships an update every 21 months, Accumulate+ Compound Interest fortnightly. The most recent releases landed on October 15, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 3 level
税・割引計算機 versus Accumulate+ Compound Interest: the parameters behind the verdict, then further details
Parameter税・割引計算機Accumulate+ Compound Interest
PriceFreeFree
Update frequencyEvery 21 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.0 — better16.0
Further details — not scored
Size44 MB13 MB
Age rating4+4+
DeveloperKazuya KobayashiHIROSHI TANABE

In-app purchases

None

税・割引計算機

No in-app purchases

None

Accumulate+ Compound Interest

No in-app purchases

Questions

Is 税・割引計算機 free?
税・割引計算機 is free to download, with no in-app purchases.
Is Accumulate+ Compound Interest free?
Accumulate+ Compound Interest is free to download, with no in-app purchases.
Do 税・割引計算機 or Accumulate+ Compound Interest have ads?
Accumulate+ Compound Interest shows ads; 税・割引計算機 does not.
Which is updated more often, 税・割引計算機 or Accumulate+ Compound Interest?
税・割引計算機 ships an update every 21 months, and Accumulate+ Compound Interest fortnightly. Most recently, 税・割引計算機 was updated on October 15, 2026 and Accumulate+ Compound Interest on October 28, 2026.

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