Comparison

Simple Compound Interest vs ZeiCal

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

Head to head
About

Simple Compound Interest

Easily calculate the future value of your investments. Input your initial capital, monthly contributions, annual interest rate, and investment duration to see your projected final return, total invested amount, and growth rate. Save multiple scenarios and view monthly progress.

Highlights
  • Calculate final return
  • Calculate total investment amount
  • Calculate return rate
  • Save investment conditions
  • Show monthly increase
Features
Read full description

"If I invest $300 every month, how much will I have in 10 years?" This app gives you an instant answer. Just enter your principal, monthly investment amount, annual interest rate, and investment period to instantly simulate how compound interest grows your wealth. 【Key Features】 * Automatically calculate final assets, total investment, and profit * View monthly asset growth in list and graph formats * Save multiple scenarios for comparison See the power of compound interest for yourself.

About

ZeiCal

Features
Read full description

決算月を入力するだけで、法人税・消費税・源泉所得税・社会保険のすべての申告・納付期限を自動計算。無料で年間スケジュールを確認でき、Proでリマインダー通知・PDF出力・カレンダー同期・複数法人管理が利用できます。 【無料機能】 • 決算月から全税務イベントを自動生成 • 法人税確定申告・中間申告 • 消費税確定申告・中間申告(年1回/年3回/年11回) • 源泉所得税・住民税特別徴収の毎月納付 • 納期の特例(半期納付)対応 • 社会保険料・労働保険の各種届出 • 年末調整・法定調書・償却資産申告 • タスク完了チェックで進捗管理 • 年間スケジュール一覧・カレンダー表示 • 令和8年度税制改正を反映した期限注記 【Pro機能(アプリ内課金)】 • 期限の30日前/14日前/7日前/3日前/前日にリマインダー通知 • チェックリスト全文・PDF/CSV出力 • 端末カレンダー同期 • ネイティブホームウィジェット(直近タスク・D-day) • 税金シミュレータ(概算試算・無制限) • 複数法人プロフィール(最大5社) • 過去決算年度の閲覧 【その他】 • 無料版シミュレータは年1回体験可能 • 請求書作成は姉妹アプリ「ラクビル」と連携 【プライバシー】 • アカウント登録不要 • 税務計算は完全オフライン • 全データは端末内にのみ保存 • 広告なし・トラッキングなし 【利用規約】 利用規約(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ 1人法人・小規模法人の経営者、経理担当者に最適な税務スケジュール管理アプリです。

Screenshots

Simple Compound Interest4 screens
ZeiCal4 screens

Verdict

The call

The clearest difference is ads: ZeiCal at none against Simple Compound Interest's shown. ZeiCal also leads on update cadence (weekly vs every 6 months) and iOS requirement (15.1 vs 18.0). 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

Simple Compound Interest ships an update every 6 months, ZeiCal weekly. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 7 level
Simple Compound Interest versus ZeiCal: the parameters behind the verdict, then further details
ParameterSimple Compound InterestZeiCal
PriceFreeFree
Rating4.7 (23 ratings) — better—
Positive reviews55.6% of reviews—
Number of ratings23 — better—
Update frequencyEvery 6 monthsWeekly — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.015.1 — better
Further details — not scored
Size5 MB39 MB
Age rating4+4+
DeveloperStack3JUNGLAE JO

In-app purchases

None

Simple Compound Interest

No in-app purchases

None

ZeiCal

No in-app purchases

Questions

Is Simple Compound Interest free?
Simple Compound Interest is free to download, with no in-app purchases.
Is ZeiCal free?
ZeiCal is free to download, with no in-app purchases.
Do Simple Compound Interest or ZeiCal have ads?
Simple Compound Interest shows ads; ZeiCal does not.
Which is updated more often, Simple Compound Interest or ZeiCal?
Simple Compound Interest ships an update every 6 months, and ZeiCal weekly. Most recently, Simple Compound Interest was updated on October 2, 2026 and ZeiCal on October 7, 2026.

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