Comparison

Spayd 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

Spayd

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●説明 Spaydはスマートフォンと専用のカードリーダーを使用して 日本国内どこでもクレジットカード決済が可能になるアプリです。 磁気ストライプの読み込みだけでなく、ICチップ搭載のクレジットカードの決済にも対応しています。 クレジットカード情報は、カードリーダーから読み込んだ時点で 日本クレジット協会(JCCA)が策定した「スマートフォン決済の安全基準等に関する基本的な考え方」準拠の DUKPTキーマネジメント方式を使用して暗号化されます。 暗号化されたクレジットカード情報は、スマートフォン側では一切復号化せず、またデータとしても残りませんのでセキュリティ面も安心です。 ●Spaydの機能 - クレジットカード決済 商品名を入力した履歴が一覧で表示できるので再入力する手間を省く事ができます。 (個数、商品名は省略することも可能です。) サイン入力はアプリ上で手書きで入力ができます。 決済後のレシートはメールで送信することができます。(1件まで) - Spaydでクレジット決済した取引に利用したカード情報で会員登録を行い、月次課金を行うことができます。 - Spaydで決済した取引の履歴を検索する事ができます。 - 電子マネー決済ができます(対応ブランド:交通系、WAON、nanaco、iD、QUICPay、楽天Edy)。 - 弊社セキュリティエンジンを導入していますのでスマートフォンのセキュリティチェックも同時に行えます。 - 指定のプリンターを使用することでレシートを印刷することができます。 ※ご利用には株式会社USEN FinTechとの加盟店契約手続きが必要です。

About

Accumulate+ Compound Interest

Features
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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

Spayd2 screens
Accumulate+ Compound Interest4 screens

Verdict

The call

The clearest difference is ads: Spayd at none against Accumulate+ Compound Interest's shown. Accumulate+ Compound Interest's advantage is update cadence (fortnightly vs every 3 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

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

Spayd ships an update every 3 months, Accumulate+ Compound Interest fortnightly. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 4 level
Spayd versus Accumulate+ Compound Interest: the parameters behind the verdict, then further details
ParameterSpaydAccumulate+ Compound Interest
PriceFreeFree
Update frequencyEvery 3 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.0 — better
Further details — not scored
Size22 MB13 MB
Age rating4+4+
DeveloperUSEN FinTech Co., Ltd.HIROSHI TANABE

In-app purchases

None

Spayd

No in-app purchases

None

Accumulate+ Compound Interest

No in-app purchases

Questions

Is Spayd free?
Spayd 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 Spayd or Accumulate+ Compound Interest have ads?
Accumulate+ Compound Interest shows ads; Spayd does not.
Which is updated more often, Spayd or Accumulate+ Compound Interest?
Spayd ships an update every 3 months, and Accumulate+ Compound Interest fortnightly. Most recently, Spayd was updated on October 26, 2026 and Accumulate+ Compound Interest on October 28, 2026.

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